Garage Conversion Los Angeles — AB 68 60-Day Approvals, Fixed-Bid GC, 2026 LADBS
A garage conversion in Los Angeles is the single best dollar-for-dollar move a homeowner can make in 2026. AB 68 ministerial approval forces LADBS to sign off in 60 days. State law strips the discretionary public hearing. Your detached single-car becomes a 400-sqft studio ADU; your double becomes a 600-sqft one-bedroom. The rent in West LA is $2,400-$3,800 a month. The rent in the Valley is $1,900-$2,800. A JADU carve-out from the attached garage rents to a caregiver, an adult child, or an aging parent without a separate gas meter. The catch: LADBS turned down 41% of garage-conversion plan-check submittals in 2025 for code-cycle errors, missing Title 24 forms, or unpermitted historical work the homeowner didn't disclose. We started as architectural designers in 2016 and added our CSLB GC license in 2023 — 200+ LA builds later, the design-build loop is tight. The architect who draws your plans is the same company that pulls the permit, sets the foundation, and hands you the closed CO. One fixed bid. One project lead. One phone number. Hablamos español.
What an LA garage conversion actually costs in 2026
Four real numbers from the last 18 months of NPLD builds. Detached single-car to studio ADU, 400 sqft ($95K-$145K): keep the slab if it scans clean, new 4-inch perimeter footing if it doesn't, full envelope insulation R-19 walls / R-30 ceiling, mini-split HVAC, kitchenette with 24-inch range and apartment fridge, 3/4 bath with tile shower, dedicated 100-amp subpanel off the main, sewer lateral tie-in, dedicated address from LADBS. 10-14 weeks. Detached double-car to one-bedroom ADU, 600 sqft ($130K-$185K): everything above plus a real kitchen with 30-inch range, full bath with tub, bedroom with closet, second egress window, in-unit washer/dryer hookup. 14-18 weeks. Premium 600-sqft full kitchen + bath ($165K-$230K): quartz counters, custom cabinets, hardwood or premium LVP flooring, frameless glass shower, smart thermostat and locks, EV-ready 240V outlet, separate gas/electric meters if you want a true rental separation. 16-20 weeks. Luxury 800-sqft addition ADU ($200K-$280K): when the existing detached double is too small, we tear it down and build a new 800-sqft detached ADU on the same footprint plus a 200-sqft expansion (AB 68 max for single-family lots in most LA zones), full architectural finishes, dedicated outdoor patio, separate water/sewer/gas/electric service. 20-26 weeks. All bids fixed. LADBS plan-check + permit fees ($4,800-$11,000 typical), school-impact fee ($2.97/sqft over 500 sqft, 2026 rate), and sewer-capacity charge are itemized at cost. The big trap: power-service upgrade. If your house still runs 100-amp service (50% of pre-1985 LA homes do), the ADU triggers a 200-amp panel upgrade and a DWP service drop swap — add $6,800-$11,500 to any bid that doesn't already include it.
AB 68, AB 2221, and what the 2026 ADU law actually grants you
California AB 68 (2019) plus the 2024 AB 2221 amendments did three things every LA homeowner should know. First: LADBS must approve a ministerial ADU permit within 60 days of complete submittal — no public hearing, no neighbor objection, no discretionary review. Second: a detached ADU up to 1,200 sqft is allowed by-right on any single-family or multi-family lot in any zone (yes, even R1-1) regardless of lot size, setback minimums (4-foot side and rear, 0 for conversions), or floor-area ratio. Third: a JADU (junior accessory dwelling unit) carved from existing attached living space — including an attached garage — is allowed in addition to a detached ADU, so most LA single-family lots can stack two units onto one parcel without subdividing. We've used this combo to turn a 1947 Valley single-family into a primary + detached ADU + JADU rental triplex on a 6,200-sqft lot. The legal-rent math at 2026 West LA rates: primary owner-occupied, detached ADU $3,200/mo, JADU $1,800/mo — that's $60,000/year of legal rental income on a $215K total construction spend. The trap: 'as-built' / 'unpermitted' work. If your garage was converted in 1991 by the previous owner without a permit, LADBS will require either retroactive permitting (we can do this — $4,800-$9,200 in plan-check and corrections) or a full demo-and-rebuild back to code. We tell you on day one which path your specific permit history requires.
How a real LA garage conversion runs — design-build, one contract
Day 0: free 60-90 minute in-home consult. We walk the garage, measure, photograph the existing slab, scope the electrical panel, and pull your LADBS permit history on our laptop so you see exactly what was permitted and what wasn't. Day 5: fixed-bid PDF — line-itemed scope, materials, dates, and the LADBS plan-check + permit fees broken out at cost. Day 14: 10% deposit on signing, we draft architectural plans (CalGreen 2025 compliant, Title 24 envelope calc, structural letter if needed). Day 21-28: plans submitted to LADBS ePlanLA portal, we handle all plan-check corrections (there are always 2-3 rounds). Day 60-75: permit issued. Day 76: demo, foundation if needed, framing inspection, rough-in inspection (electrical/plumbing/mechanical), insulation inspection, drywall, finishes. Day 150-180: final inspection, certificate of occupancy issued, separate ADU address mailed, you start collecting rent. Draws tied to milestones: deposit, permit issued, demo+foundation complete, rough-in passed, drywall, finishes/cabinets, final inspection. One project lead per ADU. His cell is on the contract. He answers.
The LA-specific stuff we always check before bidding
Power service: 100-amp panels can't carry a modern ADU with mini-split + induction + EV charger — budget the 200-amp upgrade. Sewer lateral: cast-iron laterals in pre-1980 LA homes are at end-of-life; if we're cutting concrete to tie in the ADU drain, we'll camera-scope your main lateral for free and tell you if you need a spot repair before the new branch lands. Foundation: pre-1978 garages on rubble-stone or un-reinforced concrete footings need a full perimeter sister-pour ($8,400-$14,800) before they can carry conditioned-space load. Setbacks: LA Municipal Code 12.22 A.33 sets 4-foot side and rear setbacks for new construction — but conversions of existing legal garages can stay at the existing setback (0 if it's on the property line) under AB 68. Title 24 envelope: 2025 code cycle requires R-19 walls and R-30 ceiling minimum, plus a HERS-verified duct-leakage test if the ADU shares mechanical with the primary. Hillside zones: anything above 1,250 feet elevation or on a slope over 15% triggers hillside-ordinance review (additional 30-45 days of LADBS time, $1,800-$3,400 in extra plan-check). Coastal Zone: ADUs west of Lincoln in Venice/Mar Vista and west of PCH in Pacific Palisades trigger Coastal Commission review (90-180 days). Historic districts (HPOZ): we check your address against the HCM/HPOZ overlay on day one; interior-only garage conversions usually clear without Cultural Heritage Commission review, but anything that touches the exterior elevation visible from the street will need it.
The JADU + ADU stack: how 200+ LA families turned one garage into two rental units
A junior accessory dwelling unit — JADU — is the unsexy half of California ADU law and the smartest move on most LA lots. State law allows one JADU up to 500 sqft carved from existing attached living space (which legally includes an attached garage with a shared wall to the primary). The JADU needs its own exterior entrance, an efficiency kitchen (no full range required — hot plate, microwave, sink, mini-fridge passes code), and a bathroom — which can be shared with the primary dwelling. Critically, a JADU is permitted in addition to a detached ADU on the same lot. The play: attached single-car garage becomes a 380-sqft JADU rental for a caregiver or adult child at $1,600-$2,200/mo; detached double-car garage becomes a 600-sqft one-bedroom ADU at $2,800-$3,600/mo. Total rental yield on a typical Valley lot: $52K-$70K/year. Owner-occupancy required on at least one unit (primary, JADU, or ADU — your choice). We design the JADU and the ADU on a single submittal package to save plan-check time. Note: JADU rental ban for short-term (under 30 days) applies citywide — long-term only.
Why design-build saves you the LADBS dance
We started in 2016 doing architectural design — plans, renderings, LADBS submittals, structural letters. We watched too many of our drawings get butchered by GCs who didn't read them, so in 2023 we got our own CSLB general contractor's license (1105249) and started building what we drew. 200+ LA County completions later, the design-build loop is tight: the architect and the GC are the same company. When the framer hits a surprise in your 1934 garage — and in LA there is always a surprise — the architect is on-site by lunch, not next Tuesday. When LADBS plan-check kicks back a correction, the person who answers it is the same person who drew the original sheet. When the inspector wants to see the Title 24 envelope calc on day-of-inspection, our project lead pulls it up on his phone instead of telling the inspector to come back tomorrow. We're insured ($2M general liability + workers' comp), bonded, and every sub on our roster is W-2 or 1099 with their own license verified through CSLB. We handle all 33 service categories in-house — architectural, structural, foundation, framing, electrical, plumbing, HVAC, drywall, tile, cabinetry, paint, flooring, roofing, windows, doors, low-voltage, smart-home, landscaping — one contract, one accountable GC, one phone number that picks up.
Frequently Asked Questions
How long does LADBS take to approve a garage-to-ADU permit?
State law gives LADBS 60 days from complete submittal under AB 68 ministerial review. In practice, with 2–3 rounds of plan-check corrections (normal for any LA permit), we see 65–110 days from submittal to permit-in-hand. Our 2025 average across 18 ADU pulls: 71 days. We submit on day 14–21, so you typically have the permit before day 90.
Do I need to be the owner-occupant?
California state law removed the owner-occupancy requirement in 2020. As of 2026, you do not have to live on the property to build or rent the ADU. (Local LA rules can re-impose it on JADUs only — we'll flag if your specific zone applies.)
What's the difference between an ADU and a JADU?
ADU = up to 1,200 sqft, full kitchen with full-size range, separate exterior entrance, separate utility-service-optional, detached or attached. JADU = up to 500 sqft carved from existing attached living space (including attached garage), efficiency kitchen (hot plate + sink ok), separate exterior entrance, bathroom can be shared with primary. You're allowed one of each on the same lot.
Can I rent it on Airbnb?
No. LA Municipal Code bans short-term (under 30 days) rentals of any ADU or JADU citywide. Long-term lease only. Most of our clients rent 12-month leases for $1,800–$3,600/mo depending on neighborhood and unit size.
What if my garage was illegally converted by the previous owner?
We pull your LADBS permit history on day one. If there's unpermitted prior work, the two paths are: (1) retroactive permitting + corrections ($4,800–$9,200, takes 60–120 days), or (2) demo-and-rebuild back to code (cleaner, sometimes cheaper if existing work is non-compliant). We give you the specific recommendation in your written bid.
Do you handle the 200-amp panel upgrade and DWP coordination?
Yes. If your house is on 100-amp service (50% of pre-1985 LA homes), we coordinate the service upgrade with DWP, schedule the temporary disconnect, set the new meter base, and re-energize — $6,800–$11,500 line-itemed in your bid.
What about Title 24 and the HERS duct-leakage test?
Our in-house architectural designer runs the Title 24 envelope calc as part of your plan set — no separate consultant fee. If the ADU shares mechanical with the primary (rare — we usually spec a dedicated mini-split), a third-party HERS rater does the duct-leakage test at $350–$550. Line-itemed.
Will you pull the LADBS permit, or do I have to?
We pull it. NPLD is the permit applicant of record on every job, our CSLB license number 1105249 is on every submittal, and LADBS inspectors call our project lead — not you. Permit fees itemized at cost, no markup.
What if I'm in an HPOZ or hillside zone?
HPOZ: interior-only garage conversions usually clear without Cultural Heritage Commission review; anything touching the exterior visible from the street triggers it (add 30–60 days, $1,800–$3,400). Hillside: triggers hillside-ordinance review (add 30–45 days, $1,800–$3,400 extra plan-check). We check your address on day one and tell you the exact path.
Hablan español?
Sí. Estimaciones, contratos, planos, y reuniones con el inspector de LADBS — todo en los dos idiomas. Usted escoge.
What's your warranty?
Workmanship: 2 years on everything we install, parts and labor. Structural: 10 years on framing, foundation, and load-bearing work. Manufacturer warranties on appliances, fixtures, and finishes pass through at closeout. We come back free for the 2-year workmanship period.
Can the ADU have its own address?
Yes. LADBS assigns a separate ADU address (typically 'A' or '1/2' suffix to your primary) at certificate-of-occupancy. The ADU gets its own mailbox, USPS service, and can apply for a separate DWP account for true rental separation.
Free LA garage-conversion consult — 60-90 min, AB 68 ADU strategy, fixed bid in 5 days. Text or call (818) 605-1388 or book online. CSLB #1105249. Hablamos español.
(818) 605-1388 · Netanel Presman · NP Line Design · CSLB GC #1105249 · BBB A+