What You Pay for ADUs — Average Prices & Breakdown

Last updated October 5, 2026

Nationwide, expect to pay $1,418 to $4,396 per job for adu, with the middle of the market near $2,497. Your own quote will land somewhere in that band.

Typical cost at a glance

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

Cost by type

Type	Low	Typical	High
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.

What ADUs typically costs

The three numbers worth remembering for adu in your area are $1,418 at the simple end, $4,396 at the complex end and roughly $2,497 per job in between. Where your job lands depends mostly on scope and access.

How to compare quotes for adu

Before you choose a provider for adu, check what each quote excludes and how long it is held. A quote that expires quickly or hides extras is not a firm price.

Who sets adu prices

There is no central price for adu. Each provider builds a quote from labour, materials and overhead, then adjusts for demand. That is why two quotes rarely match.

Budgeting for adu

A useful adu budget has three parts: the expected cost near $2,497, a contingency for access or materials, and any fee for permits or disposal.

Timing your adu

Ask about lead time before you book adu. A provider with a light calendar may move on price, while one booked solid will not, and that difference is worth comparing carefully.

What moves the price of adu

In your area, adu prices swing on the same few factors: how much work is involved, the quality tier, how easy the site is to reach, and how quickly it must be finished. Change any one and the figure moves.

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. Providers serving your area can tell you how it affects a typical job.

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. For your area, ask a provider to put that in writing with the quote.

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. The specifics vary across your area, so confirm them with the provider you hire.

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. Where you are in your area can change the detail, so compare nearby quotes.

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.