Your ADU Journey

A Clear Path, Built Around You

Most contractors hand you a quote and disappear. We built a process where you are never confused, pressured, or blindsided -- and we put a 100-day build clock in writing to back it up.

The 10 Steps

From First Call to Move-In Day

1

Project Clarity Conversation

15 to 30 minute phone call. No pressure. Just clarity.
Day one (~30 min)

A real conversation, not a sales pitch: who you are building for, what you are trying to solve, and whether an ADU is even the right move. If it is not, we will tell you.

The Result: You will know whether this makes sense for your family before going one step further.
2

See a Finished ADU in Person

By appointment, at a time that works for you.
Within 1-2 weeks

Walk through a completed BuildX ADU, touch the finishes, ask the hard questions. Most clients say this is the moment it stops feeling like a dream and starts feeling real.

The Result: A clear picture of what you are building, and confidence that it is actually possible.
3

Project Discovery Call

20 to 30 minutes on Zoom. Your questions answered.
~30 min, scheduled within days

Now we get specific: your site, feasibility, budget ranges, and design ideas, making sure the vision, budget, and reality all line up. If something does not, we will say so.

The Result: You will know what is realistic for your lot, your budget, and your timeline.
4

Site Visit

We come to you.
~1 hour on-site

Our builder walks your property, reading the lot, utilities, access, and setbacks, to catch anything that could blow up a budget before any money changes hands.

The Result: A grounded, honest read on your site before any money changes hands.
5

Proposal Review

Face-to-face in our Carver office.
~1 hour, in person

We sit down and walk every line, full scope, timeline, and budget guidance, with no vague items and no surprises buried in the fine print. Hard questions welcome.

The Result: A complete picture of your project. No guesswork.
6

Design Kickoff Agreement

The starting gun.
Kicks off the design phase

This launches design and engineering -- your designer, engineers, and permit team get to work. It is not the construction contract, just the green light to plan your project properly.

The Result: Your project is officially in motion with the full BuildX team behind it.
7

Budget Review & Selections

Every dollar accounted for.
Runs through design & permitting

We review all pricing and selections together, so you see where every dollar goes, and work through anything over budget here, before you sign a construction contract.

The Result: A finalized budget you have approved, with all selections completed.
8

Construction Contract

You have done the work. Now we do ours.
Permitting 90 to 120+ days

With your approved budget and selections, we sign and break ground. By now you know us, you have seen our work, and you know exactly what to expect.

The Result: Construction begins. Your 100-day* clock starts.
9

100-Day Guaranteed Build

We put it in writing.
100 days or less*

Move-in ready within 100 days* of the first shovel, in writing, not a goal. Tight sequencing, subs who respect the schedule, a PM who keeps it moving.

The Result: A finished ADU. On time. As promised.
10

Move In Day!

Welcome home.
The whole point

Your parent has their own space. Your adult child is out of the spare room. Your family is together, with room to breathe. This is why we do what we do.

What to expect

How Long It Really Takes

Plan on roughly 6 to 9 months start to finish. Town permitting usually runs 90 to 120+ days and we handle all of it -- and once we break ground, your home is finished in 100 days* or less, guaranteed.

The wait before the build is mostly the town's clock, not ours, and it is the part that tests your patience. But it is working in your favor: by the time the first shovel goes in, your design, budget, selections, and permits are all locked, which is exactly why we can guarantee the 100 days.* Every build is backed by a 3-year warranty and an 11-month check-in.
The 100-Day Build Guarantee

Not an Estimate. A Guarantee.

Once we break ground, your ADU is move-in ready within 100 days* of the first shovel -- guaranteed in writing, not aspirational marketing.

We can promise it because of everything that happens before the build: by the time the first shovel goes in, your design, budget, selections, and permits are all locked. No mid-project scrambling.

Read exactly what the guarantee covers (and what can extend it) →

18

Completed BuildX ADUs and counting -- every one delivered on the 100-day* build guarantee.

*The 100-day build clock starts at the first shovel, after design, budget, selections, and permitting are complete. If your build is going to run longer than 100 days, we will tell you the day we finish pre-construction -- before we break ground -- and explain exactly why. The reasons are almost always site-driven: ledge, difficult soil or grade, unusual lot conditions, or other things we can only confirm once your property work is fully scoped.

Proof

Real ADUs. Real Build Times.

Every one of these is a completed BuildX ADU, delivered on the 100-day* build guarantee. This list updates automatically as each new project is finished.

Marshfield, MA
Modified X-5 The Glen
900 sq ft · 2 bed, 1 bath
79 days to move-in
Plymouth, MA
Modified X-2 The Hideaway
610 sq ft · 1 bed, 1 bath
73 days to move-in
Kingston, MA
X-3 The Haven
900 sq ft · 2 bed, 1.5 bath
82 days to move-in
Freetown, MA
X-3 The Haven
900 sq ft · 2 bed, 1 bath
88 days to move-in
Pembroke, MA
Custom In-Law Addition
515 sq ft · 1 bed, 1 bath
92 days to move-in
Plymouth, MA
Modified X-3 The Haven
900 sq ft · 2 bed, 1 bath
100 days to move-in
Plymouth, MA
X-3 The Haven
900 sq ft · 2 bed, 1 bath
89 days to move-in
Plympton, MA
Modified X-11 The Meadow
725 sq ft · 1 bed, 1.5 bath
84 days to move-in
Plymouth, MA
X-3 The Haven
900 sq ft · 2 bed, 1 bath
77 days to move-in
Kingston, MA
X-2 The Hideaway
515 sq ft · 1 bed, 1 bath
58 days to move-in
Mattapoisett, MA
X-11 The Meadow
720 sq ft · 1 bed, 1 bath
95 days to move-in
Carver, MA
900 sq ft · 1 bed, 1 bath
Freetown, MA
900 sq ft · 1 bed, 1 bath
Sagamore Beach, MA
Modified X-14 The Woodland
680 sq ft · 1 bed, 1 bath
96 days to move-in
Plymouth, MA
X-3 The Haven
900 sq ft · 2 bed, 1 bath
70 days to move-in
Duxbury, MA
900 sq ft · 2 bed, 1 bath
Norwell, MA
900 sq ft · 1 bed, 1.5 bath
Plymouth, MA
X-3 The Haven
900 sq ft · 2 bed, 1 bath
84 days to move-in
Process & Timeline FAQ

Questions About How We Build

How long does the whole ADU process take?

Plan on roughly 6 to 9 months from your first conversation to move-in day. Town permitting is the biggest variable and usually runs 90 to 120+ days, which we handle for you. Once we break ground, your home is finished in 100 days* or less, guaranteed.

What does the 100-day guarantee actually cover?

It means your ADU is move-in ready within 100 days* of the first shovel -- in writing, not a goal. The clock starts at the construction contract and break-ground, after design, budget, selections, and permits are already locked. If a build is going to run longer than 100 days, we tell you the day we finish pre-construction, before we break ground, and explain exactly why -- almost always site-driven reasons like ledge, difficult soil, or unusual lot conditions.

Why does permitting take so long, and is that on you?

The wait before the build is mostly the town's clock, not ours. It is the part that tests your patience, but it works in your favor: by the time the first shovel goes in, every detail is locked, which is exactly why we can guarantee the 100 days.

When do I actually have to commit money?

Not until you have the full picture. The early steps -- Clarity Conversation, in-person ADU showing, Discovery Call, and Site Visit -- happen before any money changes hands. The Design Kickoff Agreement launches design and engineering, and the Construction Contract is signed only after you have reviewed and approved every line and selection.

Do you really build on-site, or is it modular?

Every BuildX ADU is a real, stick-built home constructed on your property -- nothing modular, nothing prefab. You get full-house quality at a smaller footprint, and a build process you can watch happen in your own yard.

Ready to See Where You Are on the Path?

Start with a 15 to 30 minute Project Clarity Conversation. No pressure, no sales pitch -- just an honest look at whether an ADU is the right move for your family.

LET'S TALK