Detached ADU
A standalone home in your backyard — the most private and flexible option.
600–1,200 sq ftFrom $180K
America's #1 ADU planning hub
Plan your backyard ADU with total confidence
See if your lot qualifies, estimate real costs, and compare vetted local builders — all in one place, in minutes.
Free instant check · No spam, ever4.8from 2,500+ homeowners
50+
Cities covered
150+
Verified builders
98%
Owner satisfaction
Trusted by homeowners across the country
2,500+
ADU projects planned
150+
Vetted local builders
$42M
Saved on build costs
50+
Cities & counties
ADUs, made simple
One guided journey, start to finish
From your very first question to move-in day, ADU Wizard stays with you the whole way — no jargon, no dead ends, no guesswork.
1
Feasibility
See if your lot qualifies
2
Design
Shape your layout & style
3
Permits
Approvals, handled
4
Financing
Fund it with confidence
5
Build
Vetted builders & milestones
6
Move-in
Live, rent or host
Not sure where to start? We'll guide you from step one.
Explore the options
Find the ADU type that fits
From a standalone backyard home to a converted garage — here are the main ADU types and what each is best for.
Garage Conversion
Turn an existing garage into living space — often the fastest, lowest-cost route.
300–700 sq ftFrom $90K
Attached ADU
A new addition connected to your home, sharing a wall and some utilities.
400–900 sq ftFrom $150K
Junior ADU
Carved from within your existing home — a compact suite, often with its own entry.
Up to 500 sq ftFrom $60K
Above-Garage
Living space stacked over a garage — extra room without giving up yard.
400–800 sq ftFrom $160K
Browse all ADU types8 ADU styles · filter by size, budget & lot to find your best fit
Trusted local builders
Find a trusted ADU builder near you
We've vetted ADU builders in cities across the country. Drop in your ZIP and we'll match you with the best-rated teams in your area.
Builders across the country
Our verified network spans cities coast to coast — drop in your ZIP to see who's near you.
Builders near you
Enter your location to see matched, verified ADU builders ready to quote.
E
EcoBuild ADU
Los Angeles, CA · 4.2 mi away
4.8
D
DwellNest ADUs
Pasadena, CA · 7.8 mi away
4.8
N
NorthStar ADU
Long Beach, CA · 11.3 mi away
4.7
ADU Wizard Verified
Every builder clears our 12-point vetting
We don't list just anyone. Builders earn the Verified badge only after passing every check below — so you can hire with total confidence.
License & insurance
State license, bonding, and active liability coverage confirmed on file.
Background checked
Business history, references, and past clients independently verified.
Real homeowner reviews
Ratings come only from verified ADU Wizard clients — no fake reviews.
On-time & on-budget
Proven delivery record on schedule and within the quoted price.
Cost Calculator
Estimate your ADU cost in seconds
Get a quick, realistic estimate based on your size, location, and build preferences — no guesswork needed.
Estimated total cost
$199,750
Construction$0K
Design & permits$0K
Site & foundation$0K
Finishes$0K
Estimates may vary based on builder, site conditions, and location.
Your ADU, step by step
See how your ADU comes to life
Follow every stage — from first sketch to move-in day. We stay right alongside you, so nothing catches you off guard.
1Design
ADU Costs
Browse all ADU costsPopular ADU cost pages
Real, planning-level price ranges and permit timelines for the states and cities we cover.
ADU costs
California
$110,000–$520,000
View cost breakdownADU costsAnaheim
$120,000–$460,000
View cost breakdownADU costsCampbell
$155,000–$600,000
View cost breakdownADU costsCupertino
$160,000–$700,000
View cost breakdownADU costsFresno
$100,000–$390,000
View cost breakdownADU costsLong Beach
$120,000–$500,000
View cost breakdownADU Blog
Latest ADU insights & guides
Expert advice, real homeowner stories, and inspiration to help you build smarter.
Jul 6, 2026
Does an ADU Increase Property Value? What the Data Shows
I dug into the actual appraisal data on whether an ADU raises your home value, and the honest answer is more useful than the 30% everyone repeats.
Omer LewinsohnLearn more
Jul 6, 2026
What States Allow ADUs in 2026, and What's Coming Next
About 18 states now allow ADUs statewide. Here is the real list, who is close, who isn't, and my honest estimate for where this lands by 2030.
Omer LewinsohnLearn more
Jul 6, 2026
Who Qualifies for California's ADU Grant in 2026 (Honest Answer)
The honest answer no other builder is giving you about California's ADU grant program in 2026, plus what actually helps you fund an ADU right now.
Omer LewinsohnLearn more
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