Best ADU Builders in Sherman Oaks, CA
Compare vetted, CSLB license-verified ADU builders and ADU contractors in Sherman Oaks. The average cost to build an ADU in Sherman Oaks is $280–$420 per square foot. Top-rated builders include Eco Grizzly, AP Remodeling, Olympia Construction by Design.
Every builder below is CSLB license-verified, bonded, and insured — vetted before they ever reach a homeowner. Browse ratings and real reviews, compare starting prices, or let us match you with the best fit for your lot and budget. It's free; we're paid by the builders, not you.
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What kind of ADU are you planning?
ADU activity in Sherman Oaks
Recent LADBS records show permit volume, project size, and valuation patterns for ADU work in Sherman Oaks.
- Permits since 2020
- 602
- LADBS ADU permit activity
- Typical size
- 768 sq ft
- Average permitted ADU size
- Average valuation
- $77,665
- Average permit valuation
Trend: recent LADBS activity is running above earlier years, averaging 96 permits per year in 2025-2026 versus 82 per year in 2020-2024.
Source: LA Dept. of Building & Safety.
Showing 12 of 15 builders in Sherman Oaks, CA
Top matches ranked by reviews, rating, and listing quality.
Last updated July 16, 2026
License VerifiedEco Grizzly
Serving Sherman Oaks, CA · Canoga Park, CA
“We had a great experience with the chimney repair team. They were professional, and explained everything clearly before starting the work. The repair was done e…”— Cecilia Adler
Pricing on request
Licensed Southern California design-build contractor for detached ADUs, garage conversions, and JADUs.
License VerifiedAP Remodeling
Serving Sherman Oaks, CA · Culver City, CA
“Working with Aviv on our complete home remodel was an exceptional experience from start to finish. His professionalism, attention to detail, and commitment to q…”— Asia Adducci
Pricing on request
LA design-build remodeler offering ADUs, garage conversions, and full-home renovation.
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License VerifiedOlympia Construction by Design
Serving Sherman Oaks, CA · Encino, CA
“We recently completed a full home remodel in Sherman Oaks with Olympia Construction, and the experience was excellent from start to finish. We received five dif…”— Sapir Adani
Pricing on request
Licensed Los Angeles general contractor building custom ADUs across the San Fernando Valley
License VerifiedQuality First Builders
Serving Sherman Oaks, CA · Sherman Oaks, CA
“Before we started I honestly thought a garage ADU would feel like exactly that... a garage that someone tried to dress up. That was my biggest concern because t…”— Vicente Enriquez
Pricing on request
Design-build ADUs, additions and remodels across Los Angeles and the San Fernando Valley.
License VerifiedGround Up Builders
Serving Sherman Oaks, CA · Van Nuys, CA
“We cannot recommend Ground Up Builders enough! They converted our two-car garage into an ADU and did a truly amazing job. They finished ahead of schedule, commu…”— Lauren Worsham
Pricing on request
Family-owned LA design-build contractor for ADUs, garage conversions, and whole-home remodels
License VerifiedActon ADU
Serving Sherman Oaks, CA · Campbell, CA
“We had a great experience working with Acton ADU on our ADU project, and I want to give a special shoutout to Sandro. Sandro was fantastic from start to finish—…”— N K
Pricing on request
A California general building contractor licensed since 1992, serving the LA market statewide.
License VerifiedProgressive Builders
Serving Sherman Oaks, CA · Canoga Park, CA
“Instead of replacing one thing at a time, we decided to do the bathroom remodel properly in one project. That choice saved us from having to redo the work later…”— Isaac Bailey
Pricing on request
Your Vision, Our Craft — transforming LA homes inside and out.
License VerifiedAdept Builders & Design Inc
Serving Sherman Oaks, CA · Pasadena, CA
“Leo and his team at Adept knocked it our of the park on our pool deck project. Once we met him for a consultation, we knew right away that he was our guy. He wa…”— Dane Mount
Pricing on request
CSLB-verified B contractor in Pasadena, CA.
License VerifiedThousand Oaks ADU Builders
Serving Sherman Oaks, CA · Agoura Hills, CA
“We hired this team to build our 3 bed, 2 bath ADU, and they did an outstanding job. From the initial design to the final build, the process was efficient and we…”— Jesse Ruf
Pricing on request
CSLB-verified B contractor in Agoura Hills, CA.
License VerifiedSouth Land Remodeling
Serving Sherman Oaks, CA · Sherman Oaks, CA
“Our experience with Southland remodeling has been wonderful. My family came to Ilan with a vision and he and the company turned it into a reality! They are a 5…”— stacy sanker
Pricing on request
5-star, award-winning ADU builder and architect serving Los Angeles and the San Fernando Valley
License VerifiedGolden ADU
Serving Sherman Oaks, CA · Los Angeles, CA
“We begun the first phase of our ADU project and so far the experience has been very positive. The team has been professional and organize throughout the demolit…”— Marcia Berry
Pricing on request
Trusted design-build ADU specialists for Los Angeles and surrounding communities.
ADU Concepts
Serving Sherman Oaks, CA · Tarzana, CA
“ADU Concepts built a detached ADU on our Calabasas property and did a fantastic job. They guided us through permitting, construction, and inspections while keep…”— Michael Stoltzman
Pricing on request
CSLB-verified A | B contractor in Tarzana, CA.
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Frequently Asked Questions
- How much does it cost to build an ADU in Sherman Oaks, CA?
- In Sherman Oaks, ADUs typically run $280–$420 per square foot all-in. A detached 800 sq ft unit commonly lands between $230k and $340k depending on finishes, site conditions, and utility connections. Garage conversions are the most affordable path, often under $180k.
- How long does it take to build an ADU in Sherman Oaks?
- Plan to budget 6–12 months end to end. California law caps ADU plan check at 60 days for compliant designs, and construction usually takes 4–8 months after permits are issued.
- Do I need a permit to build an ADU in Sherman Oaks?
- Yes. All ADUs require a building permit, but California mandates ministerial (non-discretionary) approval for compliant units, so there's no public hearing or design review. Your builder typically pulls the permit on your behalf.
- How do I choose a builder in Sherman Oaks?
- Confirm the contractor holds an active CSLB license, is bonded and insured, and has built ADUs in Sherman Oaks specifically. Every builder in this directory is license-verified. Use "Get a Quote" to be matched with the best fit for your lot and budget.
ADU costs in Sherman Oaks: city vs. metro vs. state
Building an ADU in Sherman Oaks runs roughly $280–$420 per square foot all-in. Here's how the city benchmarks against the broader metro and statewide averages.
| Area | Avg. cost / sq ft | Typical 800 sq ft ADU |
|---|---|---|
| Sherman Oaks | $280–$420 | $224,000–$336,000 |
| Sherman Oaks metro | ~$350 | ~$280,000 |
| California (CA) | ~$330 | ~$264,000 |
Cost by ADU type in Sherman Oaks
| ADU type | Typical size | Project cost | Timeline |
|---|---|---|---|
| Detached ADU | 600–1,200 sq ft | $180,000–$420,000 | 8–12 months |
| Attached ADU | 400–800 sq ft | $140,000–$300,000 | 6–10 months |
| Garage Conversion | 400–600 sq ft | $90,000–$180,000 | 4–7 months |
| JADU (Junior ADU) | ≤ 500 sq ft | $60,000–$140,000 | 3–6 months |
ADU rules & permits in Sherman Oaks, CA
Sherman Oaks ADU permits are handled through LADBS under California's 60-day ministerial review rules for compliant ADUs. Confirm lot-specific setbacks, height, parking, and utility details before submitting plans.
| Jurisdiction | Permit timeline | Permit fees | Notes |
|---|---|---|---|
| City of Los Angeles | 60-day plan check (by law) | $3k–$8k | Pre-approved Standard Plan program available |
| Unincorporated LA County | 60–90 days | $4k–$10k | Ministerial approval for compliant ADUs |
| Statewide (CA) | 60 days max by statute | Varies | Owner-occupancy requirement waived through 2030 |
Financing your ADU in Sherman Oaks
Most Sherman Oaks homeowners compare renovation loans, construction loans, HELOCs, and cash-out refinancing. ADU-focused lenders can underwrite against after-build value when the new unit materially increases rent or resale potential.
Construction / renovation loan
Funds released in draws as the build hits milestones; underwritten against after-build value.
HELOC / home equity
Borrow against existing equity. Fast to set up if you have 20%+ equity.
Cash-out refinance
Replace your mortgage and pull equity as cash — best when rates are favorable.
ADU-specific lenders
RenoFi and similar lenders underwrite the projected value the ADU adds, often unlocking more.
Pre-ADU Checkup — $499 — Get finalized permits, a pre-ADU checklist, and an on-site feasibility visit. Homeowners save $1,000s by doing this before engaging a contractor.