What You Pay for ADUs in Massachusetts — Average Prices & Breakdown

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In Massachusetts, adu tends to run from $1,418 to $4,396 per job, with a mid-market job near $2,497.

Costs differ from one Massachusetts metro to the next, largely because travel distance and local demand change. The city list below shows the spread.

Typical cost at a glance

United States planning figures, per job
LevelPrice
Low~$1,418
Typical~$2,497
High~$4,396

Cost by type

TypeLowTypicalHigh
Baseline transaction cost~$1,418~$2,907~$4,396
Below-median price scenario~$1,163~$2,626~$4,088
Above-median price scenario~$1,588~$3,827~$6,066
Lender and government fees~$170~$679~$1,187
Competitive or fast-moving market~$1,730~$4,206~$6,682

All figures per job.

How to compare quotes for adu

For adu, a fair comparison means identical scope. If one quote includes permits and cleanup and another does not, the cheaper total may not be cheaper at all.

Getting quotes for adu

For adu, three quotes is the practical minimum and five is rarely necessary. The goal is to see the market range, not to collect paperwork.

Budgeting for adu

For adu, the number to hold in reserve is the high end, $4,396. The number to expect is around $2,497. Budgeting for both keeps the decision calm.

What ADUs typically costs

Plan around a $1,418–$4,396 per job band for adu in Massachusetts. A typical job is near $2,497, and the gap between the two ends is where scope, materials and timing do their work.

What moves the price of adu

What pushes adu toward the top of its range? Premium materials, awkward access, urgent scheduling, extra permits and disposal. Each is optional to a degree, and each should be itemised before you compare totals.

Timing your adu

Timing changes what you pay for adu. Demand peaks around holidays, seasonal deadlines and the start of the busy season, and prices follow. Booking in a quieter window is one of the few levers that lowers the figure without cutting scope.

Frequently asked questions

How much does adu cost?
Most adu falls between $1,418 and $4,396, with a typical figure near $2,497 per job. The low end is a straightforward job with no surprises; the high end covers complex scope, premium materials or urgent timing. It is worth testing that against a couple of quotes in Massachusetts.
What affects the price of adu?
No single factor decides it — scope, materials, access and timing all move the total, and the biggest swings usually come from access and scheduling. Local providers in Massachusetts can confirm how that applies to your area.
Is ADUs cheaper in smaller cities?
Often, but not always. Smaller markets can carry a travel or availability premium that offsets a lower local rate, so it is worth checking a nearby city before assuming the lowest published figure applies to you. In Massachusetts, that is worth confirming with a local provider before you commit.
How many quotes should I get for adu?
Two or three written quotes are enough to see the real market range. Compare the same scope side by side, and ask each provider what is excluded and what would change the price after the quote is accepted. The answer can shift with the Massachusetts market, so check locally.

Keep comparing

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These are planning ranges drawn from public price data and market research. They are not a quote, an offer or financial advice, and your actual price depends on the provider, the location and the scope of the work.