How much does adu construction cost in Everett, WA?

Most Everett homeowners spend between $177,000 – $354,000 on adu construction, with an average around $265,500. Local labor prices 18% above the national average, so Everett quotes tend to land at the higher end of national ranges.

Why is adu construction more or less expensive in Everett than elsewhere?

North Sound labor prices under Seattle but above the national average. Heavy rainfall drives gutter, drainage and siding spend.

Do I need a permit for adu construction in Everett, Washington?

City permits apply to most exterior projects. Always confirm current requirements with the local building department before signing a contract, and make sure the permit is pulled by your licensed contractor.

How many quotes should I get in Everett?

Get at least three written quotes from licensed, insured Washington contractors. Comparing line items — not just the bottom line — is the fastest way to spot an inflated bid in the Seattle market.

How much does adu construction cost in 2026?

Most homeowners pay between $150,000 and $300,000, with a national average near $225,000. Small, simple jobs land at the low end; large or premium-material jobs run well above the high end.

What is the cost per square foot?

Installed pricing usually runs $250.00 to $500.00 per square foot, including labor and materials. Expensive metros can run 15–45% higher than that range.

What drives the price up the most?

Scope and access. Larger quantities lower your per-square foot price, but difficult access, demolition of existing work, structural repairs found mid-job, premium materials and rush scheduling each add 8–30%.

Permits are typically required when the work changes structure or ties into electrical, plumbing, gas or mechanical systems. Budget $75–$600 in most cities and confirm whether your contractor pulls it — unpermitted work can block a future home sale.

How long does the job take?

Most residential projects of this type finish in one to five working days once materials are on site. Custom orders, inspections and weather are the usual causes of delay.

How many quotes should I get?

Three. Bids on the same scope commonly vary 20–40%, and the middle bid with the strongest warranty and references is usually the best value — the cheapest bid often excludes prep, disposal or permits.

Home/Cost guides/ADU Construction/Everett, WA

Seattle · Washington

ADU Construction cost in Everett, WA

Everett homeowners typically pay $177,000 – $354,000 for adu construction. Local labor and materials price 18% above the national average.

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Everett average

$265,500

Typical low

$177,000

Typical high

$354,000

Per square foot

$295 – $590

Sample ZIP

98201

What drives Everett pricing

Local labor

North Sound labor prices under Seattle but above the national average.

Permits & code

City permits apply to most exterior projects.

Climate & conditions

Heavy rainfall drives gutter, drainage and siding spend.

Instant cost calculator

Adjust the inputs to see live pricing

ADU size (sq ft)600 square feet

Quality / material level

Site access

Removal / prep work

Timing

Estimated project cost

$156,750 – $213,750

Most homeowners pay around $185,250

Compare quality / material level

Cost by material in Everett

Installed Everett pricing per square foot.

Option	Installed cost	Pros	Cons
Prefab studio ADU	$275 – $375	—	—
Site-built 1-bedroom	$375 – $495	—	—
Site-built 2-bedroom	$495 – $640	—	—
Custom high-end ADU	$640 – $885	—	—

Where the money goes in Everett

A typical $265,500 Everett project, broken down by line item.

Labor0.45% · $1,195
Materials0.38% · $1,009
Permits & inspections0.05% · $133
Overhead & profit0.12% · $319

Common add-ons

Extras that show up on Everett quotes but rarely in the headline price.

Utility connections

$9,450 – $35,400

Site work and foundation

$17,700 – $70,800

Design and permits

$9,450 – $35,400

Impact fees

$2,350 – $23,600

Ways to save in Everett

Use pre-approved ADU plans where your city offers them — saves months and design fees.
Detach only if required; attached and conversion ADUs cost far less.
Collect three written bids on an identical scope — spreads of 20–40% are normal.
Book in the off-season and stay flexible on the start date to save 5–15%.
Bundle nearby work into one mobilization so you only pay setup and travel once.
Ask what the contractor would change to cut 10% without hurting durability.

Everett FAQs

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ADU Construction cost near Everett

ADU Construction cost in Seattle, WA

$192,000 – $384,000

ADU Construction cost in Bellevue, WA

$198,000 – $396,000

ADU Construction cost in Tacoma, WA

$172,500 – $345,000

ADU Construction cost in Kent, WA

$178,500 – $357,000

ADU Construction cost in Renton, WA

$180,000 – $360,000

More Washington cities

Spokane Vancouver Olympia

Other project costs in Everett

Fence Installation in Everett

$1,770 – $4,720

Roof Replacement in Everett

$10,030 – $40,120

Kitchen Remodel in Everett

$21,240 – $112,100

HVAC Replacement in Everett

$6,490 – $21,240

Deck Building in Everett

$5,192 – $14,160

Window Replacement in Everett

$531 – $1,770

See every Everett cost guide