ADU Rules in Carver, MA
Yes. Carver allows ADUs by-right up to 900 sq ft. The friction is not zoning. Carver adopted its ADU amendments at the 2025 Town Meeting. The real questions are septic capacity, the Plymouth-Carver Aquifer overlay, conservation filings near cranberry bogs, and the fact that Carver still takes paper permit applications only.
Call BuildX: (781) 627-7000
Carver allows ADUs by-right
Article 23, adopted at the 2025 Annual Town Meeting · Amended ADU Bylaw published March 11, 2025Carver adopted Article 23, Changes to Accessory Apartments, at the 2025 Annual Town Meeting, and published the amended ADU bylaw on March 11, 2025 [Article 23]. The amendment aligned Carver's local rules with Massachusetts state law (760 CMR 71.00, effective January 31, 2025) [760 CMR 71]. It is one of the most comprehensively cleaned-up ADU bylaws we have seen on the South Shore: Article 23 amended four sections of the zoning bylaw at once (§290-2-2.6 Accessory Apartments, §290-2-2.3 Use Regulation Schedule, §290-6.2 Terms, and §290-3-3.3 Table of Parking Requirements) [Article 23]. Detached, attached, and interior-conversion ADUs are allowed by-right wherever a single-family home is allowed, up to 900 sq ft or 50% of the principal dwelling, whichever is smaller.
Can I build an ADU in Carver, MA?
Yes. Carver allows detached, attached, and interior-conversion ADUs by-right wherever single-family homes are allowed, up to 900 sq ft or 50% of the principal dwelling, whichever is smaller. Carver also added the Village Business Zoning District for ADUs. No special permit is required for a protected-use ADU.
Show the Article 23 amendments, Village Business district, and state preemption note
Carver's ADU rules live in §290-2-2.6 (Accessory Apartments), with companion changes in §290-2-2.3 (Use Regulation Schedule), §290-6.2 (Terms), and §290-3-3.3 (Table of Parking Requirements). All four were amended by Article 23 at the 2025 Annual Town Meeting [Article 23]. The amended bylaw text reads:
Village Business district. In addition to every district that allows single-family homes, Carver added the Village Business Zoning District for ADUs [Article 23]. That is broader than typical and can matter for mixed-use properties along Route 58. If your parcel is in the Village Business district, confirm with the Carver Planning Department at (508) 866-3450 how the bylaw applies to your specific lot.
The bylaw recognizes state preemption directly. Carver's amended bylaw text explicitly identifies the protections that state law (760 CMR 71.00) places beyond local regulation for protected-use ADUs: density calculations, architectural restrictions stricter than the state building code, short-term-rental restrictions inconsistent with state law, owner-occupancy of the principal dwelling, minimum parking beyond the state caps, use and occupancy restrictions, and unit caps [Article 23]. The bylaw states that protected-use ADUs are not counted in any density calculations [Article 23].
Pre-amendment language that state law preempts. Carver's older bylaw limited accessory apartments to "elderly (as defined by 55 years of age and older) and/or handicapped persons" and made a permit "good for three (3) years." For protected-use ADUs, state law does not restrict the occupant by age or disability, and a protected-use ADU permit does not expire that way [760 CMR 71]. Article 23 brought the bylaw in line with that [Article 23]. Confirm Carver's current administrative posture with the Building Department at (508) 866-3405 before you design around either provision.
Historic district review is separate. If your parcel is in a Carver Historic District Commission designated area, a Certificate of Appropriateness is required for the ADU [Article 23]. That is a design review, not a special permit on the ADU itself, but it adds a step. We coordinate it.
For most Carver homeowners, the practical answer is straightforward. A Carver ADU at or under 900 sq ft, on a single-family lot, is a by-right project that runs as a building permit through the Carver Building Department. The state framework behind this is the Affordable Homes Act, which amended MGL Chapter 40A to make protected-use ADUs by-right [MGL 40A]. Where Carver ADU projects actually slow down is upstream of zoning: Title 5 capacity on septic-served lots (most of Carver), the Plymouth-Carver Aquifer wellhead-protection overlay, and Conservation Commission filings near the town's many cranberry bogs, ponds, and streams.
Carver held a Special Town Meeting on October 7, 2025, and the next regular Annual Town Meeting is scheduled for April 7, 2026, where additional ADU updates are possible [Planning Board]. We track changes to the bylaw as they happen.
Garage conversion ADU
A common variation of either the detached or attached ADU paths, depending on the garage configuration. Carver's bylaw does not treat garage conversion as a separate ADU category; it is classified based on whether the converted structure is structurally attached to the principal dwelling.
- If the garage is attached to the house: Treated as an attached ADU (Addition or Alteration permit)
- If the garage is detached from the house: Treated as a detached ADU (New Construction permit or major alteration)
- Best for: Properties with a structurally sound existing garage; ability to reuse foundation, walls, and roof; faster permitting than ground-up construction on Carver's larger rural lots
- Watch for: Foundation adequacy, insulation upgrades, separate-entrance and bathroom plumbing, septic capacity for the added bedroom, and aquifer-overlay siting where applicable
Carver ADU Rules at a Glance
The six things most homeowners ask first. Tap "View all rule details" for the complete data set.
View all Carver rule details
- ADU types allowed: Detached, attached, interior conversion
- Where allowed: Wherever single-family is allowed, plus the Village Business Zoning District
- Bylaw sections: §290-2-2.6, §290-2-2.3, §290-6.2, §290-3-3.3 (amended by Article 23)
- Adoption: Article 23, 2025 Annual Town Meeting; amended bylaw published March 11, 2025
- Owner-occupancy: Local clause preempted by 760 CMR 71.00 for protected-use ADUs
- Short-term rental: State-law-inconsistent STR restrictions preempted; confirm Carver's current STR posture with the Building Department
- Sewer status: Mostly private septic, limited municipal sewer
- Aquifer overlay: Plymouth-Carver Aquifer wellhead protection (Zone II)
- Coastal flood: None. Carver is inland. Inland flood zones along Crane Brook, the Weweantic River, ponds, and bog adjacencies only [FEMA]
- Historic district: Carver Historic District Commission Certificate of Appropriateness required in designated areas
- Dimensional standards (lot, frontage, setbacks, height): Confirm with the Carver Planning Department at (508) 866-3450
- Permitting: Paper applications only. Carver does not offer online permitting
- Deed recording: Plymouth County Registry of Deeds (Plymouth) [Plymouth Deeds]
Why BuildX Knows Carver ADUs
Our office is in Carver. We work Carver ADU projects from down the street and know the septic, aquifer-overlay, conservation, and historic-district constraints that drive your project.
BuildX Carver Office
Carver is BuildX home. Our office is here at 1B Marion Drive, Unit 2. We are your neighbors, not a regional contractor passing through. We build here, so we know Carver ADU parcels, septic and Title 5 questions, the Plymouth-Carver Aquifer overlay, and the paper-permit process firsthand.
See One in Person
Walk through a real, finished BuildX ADU before you sign anything. Private showings are available by appointment.
Day 1 Property Review
Before quoting, we check zoning, sewer or septic, Title 5 capacity, FEMA flood, wetlands, and the Plymouth-Carver Aquifer overlay.
BuildX in Carver
Carver is BuildX home, our office is here at 1B Marion Drive, Unit 2. We work Carver from down the street. The list below carries each project's current status:
- Buffington (Under Construction): 900 GFA · 1-Bed, 1-Bath
Local builders working with local families. We are not a regional contractor passing through. We live here. See more BuildX ADU builds →
What Can Complicate a Carver ADU?
Carver is rural cranberry country with larger lots and more siting flexibility, but your parcel's septic, aquifer, and conservation status, not the bylaw, is usually what moves project cost and timeline. The factors that come up most often:
Do I need septic approval for a Carver ADU? Septic
Likely affects you if: your parcel is on private septic, which is the case for most of Carver outside the limited municipal-sewer areas. Confirm sewer availability for your specific address before you design.
Most Carver properties are on private septic [MassDEP Title 5]. Adding a bedroom adds wastewater design flow, so building a detached ADU triggers a Title 5 inspection of the existing primary septic system under 310 CMR 15.301(5) [Mass.gov ADU FAQs]. Minimum septic tank capacity is 1,500 gallons, with a two-compartment tank if the ADU includes a garbage disposal [Mass.gov ADU FAQs].
Cost impact: $30,000 to $60,000 for a Title 5 capacity check plus possible system replacement when an older system cannot carry the additional ADU bedroom.
Carver's larger rural lots often leave room to site a detached ADU and any septic upgrade with more flexibility than a tight suburban parcel. The first thing we do on a Carver septic property is pull the Title 5 records and assess capacity before any design work begins.
How does the Plymouth-Carver Aquifer affect ADUs? Aquifer
Likely affects you if: your parcel falls within a Zone II wellhead protection area. Significant portions of Carver sit over the Plymouth-Carver Aquifer. Verify your specific parcel.
The Plymouth-Carver Aquifer is the single most important regional consideration for a Carver ADU. It is the regional drinking-water resource the town is named for, and multiple aquifer and wellhead protection overlays apply across town, with particular sensitivity given Carver's cranberry-bog water use and residential development [MassGIS]. A MassGIS overlay check on Day 1 tells you whether your parcel sits within Zone II [MassGIS]. We pull this before quoting.
Where the aquifer overlay applies, septic siting and sizing get reviewed more carefully than in most towns. Title 5 capacity and aquifer protection together are the gating cost considerations on most Carver ADU parcels. We design all-electric where we can, which is a clean approach over wellhead-protected groundwater.
Do wetlands or conservation rules affect Carver ADUs? Conservation
Likely affects you if: your lot is near a cranberry bog, pond, stream, or mapped wetland. Carver has numerous cranberry bogs adjacent to wetlands, multiple ponds, and the Crane Brook and Weweantic River systems, so many parcels are near a resource area.
The Carver Conservation Commission is very active because so much of the town's land sits next to wetlands. Carver has numerous cranberry bogs adjacent to wetlands, multiple ponds (Sampson, Furnace, Wenham, and others), and the Crane Brook and Weweantic River drainage systems [Wikipedia]. Review runs under the state Wetlands Protection Act (MGL c.131 §40) plus Carver's local wetlands bylaw [WPA].
Adding an ADU near a wetland resource area triggers a Notice of Intent or Request for Determination filing. Plan on a standard 6 to 10 week review for projects near a resource area.
Cost impact: +$5,000 to $15,000, plus 6 to 10 weeks of additional review. We coordinate Conservation filings on Day 1 when a parcel is near a bog, pond, or stream.
Do historic district rules apply to Carver ADUs? Historic
Likely affects you if: your parcel sits inside a Carver Historic District Commission designated area.
If your parcel is in a Carver Historic District Commission designated area, the ADU requires a Certificate of Appropriateness from the Commission [Article 23]. That is a design review of massing, materials, and appearance, separate from the building permit. It is not a denial mechanism, but it adds a step and some time on the affected parcels.
Confirm whether a specific address falls inside a designated area with the Carver Building Department at (508) 866-3405 or the Planning Department at (508) 866-3450. We coordinate the Certificate of Appropriateness review when it applies.
How do I file a Carver permit application? Paper only
Likely affects you if: you expected to file online. Carver does not currently offer online permitting.
Carver's Permits and Applications page states plainly that the town does not offer online permitting at this time [Permits & Apps]. Applications are paper only: print them, complete them, and bring them to Town Hall at 108 Main Street [Permits & Apps].
Carver's Building Department has Tuesday extended evening hours to 7:00 PM, which helps working homeowners who cannot get to Town Hall during the day [Building Dept]. We handle the paper process and the in-person Town Hall visits as part of the build.
Does transit affect Carver ADU parking? No MBTA
Likely affects you if: you were counting on a transit-adjacent parking exemption. Carver has no MBTA station, so most parcels will not qualify.
Carver does not have its own MBTA station. The closest is Middleborough/Lakeville, reached via I-495 [760 CMR 71]. State law's transit-adjacent parking exemption keys off a 0.5-mile radius of a station, so most Carver properties are unlikely to qualify [760 CMR 71].
Carver's larger rural lots usually make on-site parking straightforward to lay out regardless, so this rarely drives ADU design here the way it can in a transit town.
What Does a Carver ADU Cost?
A Carver ADU should not be priced from square footage alone. Two 800 sq ft ADUs can price very differently depending on septic capacity, the aquifer overlay, conservation review near a bog or pond, historic-district design review, and site access.
That is the full span of our 14 floor plans. Prices include the complete building package, foundation through move-in-ready finishes. Site work is priced separately after a lot evaluation.
Carver-specific cost premium factors
See full ADU pricing and floor plans. For a Carver-specific quote, call (781) 627-7000. We will not quote a Carver ADU until we know your sewer or septic status, your Title 5 capacity, and whether your parcel sits in the Plymouth-Carver Aquifer overlay or a historic district.
How the Carver ADU Permit Process Works
A by-right building permit for a protected-use ADU, filed on paper. Carver does not offer online permitting.
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1
Parcel review
1 to 2 weeks
BuildX maps your parcel against zoning, sewer or septic, Title 5 capacity, FEMA flood, wetlands, and the Plymouth-Carver Aquifer overlay before quoting. MassGIS and overlay checks happen on Day 1. This is the step that determines whether the rest of the timeline is straightforward or extended.
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2
Building permit (paper filing)
Varies by completeness and town review queue
For a protected-use ADU at or under 900 sq ft on a single-family lot, Carver processes the project as a building permit, no special permit. Carver's ADU Information page is the homeowner-facing starting point [ADU Information]. Applications are paper only: printed, completed, and brought to the Carver Building Department at Town Hall. Confirm Carver's current turnaround with the Building Department at (508) 866-3405.
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3
Historic district review (if triggered)
Add time on designated-area parcels
If your parcel is in a Carver Historic District Commission designated area, you need a Certificate of Appropriateness for the ADU. That design review runs separately from the building permit. We coordinate it.
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4
Overlay reviews (if triggered)
Add 6 to 10+ weeks when triggered
Title 5 septic review (MassDEP 310 CMR 15.000), Conservation Commission filing for wetland, bog, pond, or stream buffers (MGL c.131 §40 plus Carver's local wetlands bylaw), and Plymouth-Carver Aquifer wellhead-protection siting where applicable. These can extend the critical path.
Overall planning assumption: a clean Carver parcel with no overlay triggers moves quickly through the building permit. Add 6 to 10+ weeks for any Title 5, conservation, or aquifer-siting review, plus time for a historic-district Certificate of Appropriateness where it applies.
After the permit issues, construction inspections run through the Carver Building Department. Confirm current administrative posture at (508) 866-3405.
What Carver Zoning Districts Allow ADUs?
Article 23 allows ADUs by-right wherever single-family homes are allowed, and added the Village Business Zoning District for ADUs on top of that. Carver also has extensive agricultural zoning for its cranberry country. The town's dimensional standards (minimum lot, frontage, setbacks, and height) should be confirmed against the current bylaw with the Planning Department; the panels below describe how each area works for an ADU.
Single-family residential districts Where ADUs are by-right
- ADU allowance: By-right wherever a single-family home is allowed (per Article 23)
- Dimensional standards (lot, frontage, setbacks, height): Confirm with the Carver Planning Department at (508) 866-3450
- ADU types: Detached, attached, interior conversion, up to 900 sq ft
What this means for your ADU: Carver's rural lots tend to be larger, which usually leaves room to site a detached ADU with separation from the main house. The most common review issues are septic capacity, the aquifer overlay, and conservation buffers, not the dimensional table.
Village Business Zoning District Broader than typical
Article 23 added the Village Business Zoning District for ADUs in addition to every district that allows single-family homes [Article 23]. That is broader than most towns allow and can matter for mixed-use properties, including parcels along Route 58.
- ADU allowance: Eligible per Article 23 (broader-than-typical district inclusion)
- Dimensional standards: Confirm with the Carver Planning Department at (508) 866-3450
What this means for your ADU: if your parcel is in the Village Business district, confirm with the Planning Department how the bylaw applies to your specific lot. We help you sort eligibility before design.
Agricultural and cranberry zoning Accessory to a home
Carver is the heart of Massachusetts cranberry country, with extensive agricultural land and bogs [Wikipedia]. The A.D. Makepeace Company, the largest cranberry grower in the United States, is headquartered in the Carver and Wareham area [A.D. Makepeace]. An ADU must be accessory to a single-family residence, not to agricultural use, so the residence on the lot is what governs ADU eligibility.
- ADU allowance: Tied to the single-family residence on the parcel
- Dimensional standards: Confirm with the Carver Planning Department at (508) 866-3450
What this means for your ADU: bog-adjacent and wetland-adjacent parcels often trigger Conservation Commission review. We map resource-area buffers on the Day 1 review.
Overlay districts. Aquifer, wellhead, historic.
The Plymouth-Carver Aquifer wellhead-protection overlays apply across much of town [MassGIS], and the Carver Historic District Commission has jurisdiction in designated areas [Article 23]. Overlays modify, but do not prevent, ADU construction.
Overlay analysis happens on Day 1 with MassGIS layers. We pull your parcel's overlays before quoting.
Source: Carver Zoning Bylaw and 2025 Town Bylaws [Town Bylaws]. Confirm current dimensional standards with the Carver Planning Department at (508) 866-3450.
Sewer or Septic? Carver Is Mostly Septic.
This is the single biggest cost variable in a Carver ADU project. Carver is largely on private septic with only limited municipal sewer. On top of that, much of the town sits over the Plymouth-Carver Aquifer, so septic review carries an extra layer of care. Confirm sewer availability for your specific parcel before you design.
Show Title 5, aquifer, and water resource details
- Septic upgrade cost: $30,000 to $60,000 typical when an upgrade is needed
- Title 5 trigger: Adding a bedroom adds design flow, so a Title 5 inspection is required on septic parcels [Mass.gov ADU FAQs]
- Minimum septic tank: 1,500 gallons, two-compartment if the ADU has a garbage disposal [Mass.gov ADU FAQs]
- Aquifer: Plymouth-Carver Aquifer, the regional drinking-water resource, with Zone II wellhead overlays [MassGIS]
- Drainage: Crane Brook, the Weweantic River, and multiple ponds [Wikipedia]
Most Carver parcels are on septic. We do not quote a Carver ADU until we know your parcel's septic status, Title 5 capacity, and aquifer-overlay position. A Title 5 inspection answers the capacity question for your specific property.
Carver Is Cranberry Country
Carver is a rural town of about 12,000 people [Census], defined by its cranberry bogs, ponds, and the aquifer the town is named for. The areas that come up most often in ADU planning each have their own constraints. A bog-adjacent lot is a different project from a parcel in the Village Business district.
| Carver Area | Common ADU Issue | BuildX Note |
|---|---|---|
| Town Hall area (108 Main Street) | Coordination point, paper filing | Tuesday extended hours to 7:00 PM help working homeowners |
| Village Business district | Broader ADU eligibility, mixed use | Confirm parcel-specific eligibility with Planning |
| Historic district designated areas | Certificate of Appropriateness required | Design review adds a step; we coordinate it |
| Aquifer wellhead areas | Zone II septic siting review | We pull the overlay map before quoting |
| Bog, pond, and stream corridors | Conservation filings frequent | Notice of Intent near resource areas; 6 to 10 weeks |
| Outlying rural areas (most of Carver) | Larger lots, private septic | More siting flexibility; Title 5 capacity matters most |
Village Business district Broader ADU eligibility
Article 23 added the Village Business Zoning District for ADUs, broader than the typical single-family-only inclusion. Useful for mixed-use properties along Route 58 and other Village Business areas.
ADU note: Confirm parcel-specific eligibility with the Planning Department.
Aquifer wellhead areas Septic care
Much of Carver sits over the Plymouth-Carver Aquifer. Zone II wellhead overlays add care to septic siting and sizing for an ADU.
ADU note: We pull the MassGIS overlay map on Day 1.
Bog, pond, and stream corridors Conservation
Numerous cranberry bogs adjacent to wetlands, multiple ponds (Sampson, Furnace, Wenham, and others), and the Crane Brook and Weweantic River systems. The Conservation Commission is very active.
ADU note: Notice of Intent filings near resource areas add 6 to 10 weeks.
Historic district designated areas Certificate of Appropriateness
The Carver Historic District Commission has jurisdiction in designated areas, where an ADU requires a Certificate of Appropriateness.
ADU note: A design review, separate from the building permit. We coordinate it.
Outlying rural areas Septic
Most of Carver. Larger lots on private septic, with more siting flexibility for a detached ADU cottage.
ADU note: Title 5 capacity is the gating cost question.
What Carver's ADU Bylaw Says
Carver wrote the by-right path into the bylaw itself at the 2025 Town Meeting. The amended text is unusually direct.
Wherever a single family home is allowed an ADU is also allowed. In addition, the Planning Board added the Village Business Zoning District for ADUs.
That is the operating posture written into Carver's bylaw. A protected-use ADU at or under 900 sq ft on a single-family lot is by-right and runs as a building permit, no special permit. The bylaw also recognizes that state law (760 CMR 71.00) preempts owner-occupancy, density counting, parking beyond the state caps, and state-law-inconsistent short-term-rental restrictions for protected-use ADUs [Article 23]. Confirm your parcel's specifics with the Carver Building Department at (508) 866-3405.
Carver Building Department
Carver Building Department
- AddressCarver Town Hall, 108 Main Street, Carver, MA 02330
- Phone(508) 866-3405
- Fax(508) 866-3430
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Hours
Monday8:00 AM to 4:00 PMTuesday8:00 AM to 7:00 PMWednesday8:00 AM to 4:00 PMThursday8:00 AM to 4:00 PMFriday8:00 AM to 12:00 PM
- PermittingPaper applications only. Carver does not offer online permitting at this time. Print and bring to Town Hall.
- Planning Department(508) 866-3450
- Building Departmentcarverma.gov/building-department
- Permits and Applicationscarverma.gov/building-department/pages/permits-applications
Carver's Tuesday extended evening hours to 7:00 PM are worth using for evening conversations. Town Hall main line is (508) 866-3400.
Questions to ask when you call Carver
- Is my parcel zoned where ADUs are allowed, or is it in the Village Business district?
- What are the current minimum lot, frontage, setback, and height standards for my district?
- Is my property on municipal sewer or private septic?
- Will a Title 5 review be required for the added bedroom?
- Is my parcel in a Plymouth-Carver Aquifer Zone II wellhead protection area?
- Is my parcel in a Carver Historic District Commission designated area that needs a Certificate of Appropriateness?
- Which paper applications do I need, and what is the current turnaround?
Explore Carver ADU Topics
Jump to deep-dive sections on this page.
Carver ADU FAQs
Can I build a detached ADU in Carver?
Yes, by-right. Carver adopted Article 23, Changes to Accessory Apartments, at the 2025 Annual Town Meeting and published the amended ADU bylaw on March 11, 2025. Detached, attached, and interior-conversion ADUs are allowed by-right wherever single-family homes are allowed, up to 900 square feet, and Carver also added the Village Business Zoning District for ADUs.
Do I need a special permit for a Carver ADU?
No, not for a protected-use ADU. Carver processes a protected-use ADU at or under 900 sq ft on a single-family lot as a building permit, not a special permit. Article 23 aligned the local bylaw with state law (760 CMR 71.00), which makes protected-use ADUs by-right in zones that allow single-family dwellings.
Where can I build a Carver ADU?
Wherever a single-family home is allowed, plus the Village Business Zoning District, which Carver added for ADUs under Article 23. That is broader than most towns allow. If your parcel is in the Village Business district, confirm with the Carver Planning Department at (508) 866-3450 how the bylaw applies to your specific lot.
How big can a Carver ADU be?
Up to 900 square feet, or up to 50% of the principal home's gross floor area, whichever is smaller. This matches the state by-right protection under 760 CMR 71.00, so Carver's local rule and state law align on size.
Sewer or septic in Carver?
Mostly septic. Carver is largely on private septic with only limited municipal sewer, so confirm availability for your specific parcel. This is the single biggest cost variable. A Title 5 capacity check plus possible system replacement adds $30,000 to $60,000 to a septic-served Carver ADU project. Much of the town also sits over the Plymouth-Carver Aquifer, so septic siting gets reviewed more carefully here than in most towns.
What does a Carver ADU cost?
BuildX ADU pricing ranges from $284,301 to $525,861. That covers the complete building package, foundation through move-in-ready finishes; site work is priced separately after a lot evaluation. Carver-specific drivers move a project within that band: a septic upgrade adds $30,000 to $60,000, conservation review near a bog or pond adds $5,000 to $15,000 plus 6 to 10 weeks, the aquifer overlay can add septic-siting review steps, and a historic-district Certificate of Appropriateness adds a design-review step. For a property-specific quote, call (781) 627-7000.
How do I apply for a Carver ADU permit?
On paper. Carver does not offer online permitting at this time. You print the building permit application, complete it, and bring it to the Building Department at Town Hall, 108 Main Street. The Building Department has Tuesday extended evening hours to 7:00 PM, which helps if you work days. We handle the paper process and the in-person visits as part of the build.
What about the Plymouth-Carver Aquifer?
It is a real consideration. The Plymouth-Carver Aquifer is the regional drinking-water resource the town is named for, and Zone II wellhead protection overlays apply across much of Carver. Where the overlay applies, septic siting and sizing for an ADU get reviewed more carefully. We pull the MassGIS overlay map for your parcel on Day 1, before quoting. Verify your specific parcel's position.
Who do I call about building an ADU in Carver?
For official town process questions (permits, fees, inspector availability, paper-application forms, code interpretation), call the Carver Building Department at (508) 866-3405, or the Planning Department at (508) 866-3450 for zoning and Village Business district questions.
For parcel-level feasibility, cost estimates, design options, and construction planning, call BuildX at (781) 627-7000. Our office is in Carver.
The two are different conversations. The town can tell you what is administratively required. BuildX can tell you what is realistic on your specific parcel and what it will actually cost to build.
Sources Reviewed
Last verified: September 20, 2026. Grouped by source type so you can see which claims come from town law, state law, town process, and local constraints.
View all 20 sources, grouped
- Town of Carver. Article 23, Changes to Accessory Apartments (ADUs), 2025 Annual Town Meeting. Multi-section amendment: §290-2-2.6, §290-2-2.3, §290-6.2, §290-3-3.3. Village Business district inclusion; protected-use preemption recognition. Amended ADU bylaw published March 11, 2025.
- Town of Carver. Laws and Regulations. Bylaws and regulations umbrella.
- Town of Carver. 2024 and 2025 Town Bylaws. Zoning bylaw text.
- Commonwealth of Massachusetts. Accessory Dwelling Unit (ADU) FAQs. State guidance on Title 5 ADU compliance, including the 310 CMR 15.301(5) inspection trigger and minimum septic tank capacity.
- MassDEP. Title 5 (310 CMR 15.000) Compliance for ADUs FAQ. Highly relevant: Carver is mostly septic with Plymouth-Carver Aquifer wellhead protection.
- Commonwealth of Massachusetts. Accessory Dwelling Units (760 CMR 71.00). Protected-use ADU regulations, effective January 31, 2025. Carver's Article 23 aligned with this framework.
- Massachusetts General Laws. M.G.L. Chapter 40A, Section 3. Zoning Act as amended by the Affordable Homes Act (Chapter 150 of the Acts of 2024), ADU provisions.
- Massachusetts General Laws. M.G.L. Chapter 131, Section 40 (Wetlands Protection Act). Conservation Commission jurisdiction for projects near wetlands, bogs, ponds, and streams.
- Town of Carver. Building Department. 108 Main Street; (508) 866-3405; (508) 866-3430 fax. Hours: Mon, Wed, Thu 8:00 AM to 4:00 PM; Tue 8:00 AM to 7:00 PM (extended evening); Fri 8:00 AM to 12:00 PM.
- Town of Carver. Permits and Applications. States the town does not offer online permitting at this time; paper applications only, print and bring to Town Hall.
- Town of Carver. ADU Information. Homeowner-facing ADU page.
- Town of Carver. Building Code Information.
- Town of Carver. Articles for Special Town Meeting. Planning Department (508) 866-3450; documents the October 7, 2025 Special Town Meeting and the April 7, 2026 next regular Annual Town Meeting.
- Town of Carver. Departments. Town Hall main line (508) 866-3400.
- Plymouth County Registry of Deeds. Plymouth County deed registry. Carver is in Plymouth County; ADU deed recordings go to the Plymouth registry.
- Wikipedia and U.S. Census. Carver, Massachusetts. Population (about 12,000), Plymouth County, cranberry country, Plymouth-Carver Aquifer, A.D. Makepeace Company, multiple ponds, Crane Brook, Weweantic River, Carver Historic District Commission.
- Census Reporter. Carver Town Profile. Demographics.
- MassGIS, Bureau of Geographic Information. Aquifer and Zone II wellhead protection GIS layers. Plymouth-Carver Aquifer wellhead protection overlays.
- Federal Emergency Management Agency. FEMA Flood Map Service Center. Carver inland flood-zone lookup along Crane Brook, the Weweantic River, ponds, and bog adjacencies.
- A.D. Makepeace Company. A.D. Makepeace Company. Largest cranberry grower in the United States, headquartered in the Carver and Wareham area; Cranberry Point development context.
Nearby South Shore ADU Rules
Carver borders Wareham to the south, Middleborough to the west, Halifax to the northwest, and Plympton to the north, all in Plymouth County. All four are home territory for BuildX, the same neighborhoods we build in.
ADU Rules by City in the BuildX Service Area
BuildX serves 40 towns across four areas of southeastern Massachusetts. Each city has its own ADU bylaw, sewer or septic split, overlay map, and Building Department contact. Jump to the rules for your town:
South Shore (22)
South Coast (9)
Bridgewater Area (5)
- Bridgewater
- Carver (you are here)
- Easton
- Halifax
- Raynham
Thinking about an ADU in Carver?
BuildX can review your Carver parcel for zoning, sewer or septic, Title 5 capacity, FEMA flood, wetlands, and the Plymouth-Carver Aquifer overlay before you spend money on design or permitting. Our office is in Carver, so we know the constraints that drive your project and we handle the paper-permit process for you.
See our ADU project portfolio or visit the ADU Home TourDisclaimer: The information on this page is drawn from live interviews, podcast episodes, municipal bylaws, planning board materials, town websites, and other publicly available sources, and reflects what was accurate as of the original recording or verification date. Pricing, timelines, materials, regulations, zoning rules, permit processes, fees, and overlay district boundaries can change -- sometimes without public notice -- and no two towns interpret or apply the rules the same way. This page is for informational purposes only and should not be relied upon as the basis for any purchasing, construction, or investment decision. BuildX makes no guarantee that the information is current or complete for your specific parcel. Before making any decisions, contact the town directly or call BuildX at (781) 627-7000 or schedule a Project Clarity Call to review your specific situation.