How much does an ADU cost in Los Angeles in 2026?

Most detached LA ADUs land between $300K and $500K all-in. Garage conversions typically run $160K–$260K. We hand over a one-page feasibility note with a real number before any contract.

Do you handle LADBS permits?

Yes — full plan set, structural calcs, Title 24 energy compliance, and the LADBS back-and-forth so the homeowner only signs at the milestones.

Is Pasadena's permit process faster than LADBS?

Yes. The Pasadena Permit Center typically lands a ministerial ADU at 6–8 weeks, vs. 8–12 in LADBS. Landmark District properties add 4–8 weeks of HPC review.

Does Bungalow Heaven count as a Landmark District?

Yes — Bungalow Heaven, Garfield Heights, Prospect Park, and Madison Heights are all designated. Contributing structures need HPC review for any visible exterior work.

San Gabriel Valley ADU Builder.

We design, permit, and build accessory dwelling units across Greater Los Angeles — detached backyard ADUs, attached additions, garage conversions, and JADUs. One team, one number to call, from the first feasibility walk through the final LADBS inspection.

The SGV is the fastest stretch of LA County we work in. Pasadena, Glendale, and Burbank all run their own building departments with shorter queues than LADBS. The catches are Pasadena's Landmark Districts and the separate municipal utilities — Burbank Water & Power, Glendale Water & Power, Pasadena Water & Power — each with their own connection fees and meter-set timelines.

San Gabriel Valley cost band — 2026

$425 – $550 / sqft installed

Lot access, slab condition, panel upgrade, and finish level move the number most. Pre-approved plans trim 5–10%.

San Gabriel Valley permit clock

6–10 weeks ministerial

Plan on 3–5 months for design + LADBS permit, then 4–6 months on-site for an 800–1,000 sqft detached ADU.

Scope — start to keys.

Site walk, feasibility note, and zoning / LAR1 / RD overlay check
Full architectural plan set, structural, MEP, Title 24 energy
LADBS or local-city permit submittal and back-and-forth
Foundation, framing, MEP rough, finishes, landscape tie-in
Final inspection, certificate of occupancy, and warranty

What changes about the permit here.

Pasadena Permit Center: typically 6–8 weeks for a ministerial ADU.
Pasadena Landmark Districts (Bungalow Heaven, Garfield Heights, etc.) require Historic Preservation review.
Burbank / Glendale / Pasadena run their own water + power utilities — connection fees and timelines differ from LADWP.
Altadena and South Pasadena run through LA County Public Works — slower than the cities by 2–4 weeks.

What moves the San Gabriel Valley number.

Pasadena/Burbank/Glendale plan-check fees track LADBS but utility connections cost more.
Landmark District design review pushes window/door budgets 15–30% higher.
Altadena hillside parcels add geotech similar to LA Hills.
BWP / GWP / PWP service drops can take longer than LADWP — schedule risk, not cost risk.

In short.

How much does an ADU cost in Los Angeles in 2026?: Most detached LA ADUs land between $300K and $500K all-in. Garage conversions typically run $160K–$260K. We hand over a one-page feasibility note with a real number before any contract.
Do you handle LADBS permits?: Yes — full plan set, structural calcs, Title 24 energy compliance, and the LADBS back-and-forth so the homeowner only signs at the milestones.
Can I build an ADU in a hillside zone?: Usually yes, but Hillside Ordinance grading and access rules add design time. We've built in Silver Lake, Mt. Washington, Hollywood Hills, and the Palisades — geotech and shoring are part of the workflow.
Is Pasadena's permit process faster than LADBS?: Yes. The Pasadena Permit Center typically lands a ministerial ADU at 6–8 weeks, vs. 8–12 in LADBS. Landmark District properties add 4–8 weeks of HPC review.
Does Bungalow Heaven count as a Landmark District?: Yes — Bungalow Heaven, Garfield Heights, Prospect Park, and Madison Heights are all designated. Contributing structures need HPC review for any visible exterior work.

More we build in San Gabriel Valley.

ADU Builder in nearby LA areas.

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