ADU build in Sherman Oaks. Permits pulled, inspections passed, project completed in 14 weeks. They were transparent about every step. We're renting the unit already — it's beautiful and fully up to code.

ADU Builder & Contractor in Lake Balboa, CA
Garage conversions, detached ADUs and JADUs on Lake Balboa lots — permits through LADBS, design to Certificate of Occupancy, one fixed-price contract.
Lake Balboa ADU cost (2026): JADU $90K–$150K; Garage Conversion $130K–$200K; Detached ADU $250K–$400K+. Garage conversion or JADU: 6–10 weeks of design and plan check, then 3–5 months of construction, about 5–8 months in all. Detached ADU: 3–5 months of design, engineering and plan check, then 6–9 months of construction, 9–14 months to the Certificate of Occupancy.
Permits: LADBS, City of Los Angeles, at the Van Nuys counter. One fixed price after a free on-site estimate from a licensed general contractor, CSLB #1021284, based in Valley Glen about 10–15 minutes from Lake Balboa.
Right Image Builders is a licensed ADU contractor building across Lake Balboa — the tract streets between Victory Boulevard and Sherman Way, the blocks around Beilenson Park and the lake, the Balboa Boulevard corridor and the streets near Birmingham Community Charter High School. We handle garage conversions, detached ADUs and Junior ADUs from design through LADBS permits to final inspection and the Certificate of Occupancy, on one fixed-price contract; our crew is based in Valley Glen about 10–15 minutes away. CSLB #1021284. Free feasibility visit: (818) 210-4544.
Lake Balboa Lots
and the Second Unit They Can Hold
Lake Balboa has the Valley's simplest ADU sites: flat 1950s R1 tract lots, rectangular, with a detached two-car garage at the rear and, on many blocks, an alley behind it. The garage converts to a 400 sq ft studio with its own entrance off the alley or the side yard, no replacement parking is required under state law, and units under 750 sq ft pay no City impact fees. A detached unit of 600–1,000 sq ft fits on most lots within the 4-foot side and rear setbacks without touching the main house.
The typical site is a flat 1950s R1 tract lot with a detached garage at the rear, often with alley access. What decides between a garage conversion, a JADU and a detached unit is that lot, the sewer route and the main panel: 60- to 100-amp panels from the 1950s; a 200-amp LADWP upgrade is usually part of a full kitchen. Every unit gets a full kitchen and bath, its own sub-panel and, for a detached unit, its own address.
One contract covers the whole job: a licensed architect draws the plans, a structural engineer stamps them, we file with LADBS and answer the corrections, and our own crew builds through final inspection and the Certificate of Occupancy. Our office is in Valley Glen, about 10–15 minutes away, and the project lead who does the feasibility visit runs the build.

Three Paths
to a Second Unit
Detached ADUs
A ground-up standalone home in the backyard — up to 1,200 sq ft, one or two bedrooms, its own entrance and address. On typical Lake Balboa R1 lots we most often build in the 600–1,000 sq ft range, sized to the yard and your budget.
Garage Conversions
The most cost-effective Lake Balboa path. We convert your existing detached or attached garage into a legal ADU — foundation and slab upgrades, framing, insulation, windows, a full kitchen and bath, and code electrical and plumbing, all permitted.
Junior ADUs (JADUs)
A JADU (up to 500 sq ft) carved out of the existing house — often a converted bedroom or garage-adjacent space with an efficiency kitchen. The lowest-cost way to add a legal, rentable unit without building new square footage.
LADBS Standard Plans
Where it fits your lot, we use the City of LA's pre-approved ADU Standard Plan Program to shorten plan check and reduce design cost — a faster, more predictable path to permits than a fully custom set of drawings.
Utilities & Site Work
Water, sewer, and electrical connections; addressing; grading and drainage; and the exterior work that ties the ADU into the property. The unglamorous coordination that quietly makes or breaks an ADU timeline — handled in-house.
Design, Permits & Build
One contract from concept to keys: a licensed architect draws the plans, a structural engineer stamps them, we file with LADBS, and our own crew builds through final inspection and the Certificate of Occupancy.
Why Lake Balboa
Works for ADUs
Lake Balboa is the west side of the old Van Nuys grid, from Victory Boulevard north to Sherman Way between the Sepulveda Basin and Reseda, with Anthony C. Beilenson Park and the lake itself at Balboa and Victory, Birmingham Community Charter High School on Haynes Street, and the Metro G Line busway station on Balboa Boulevard. Our office is in Valley Glen, about five miles east along Victory or Sherman Way, a 10–15 minute drive, and the LADBS counter that reviews every Lake Balboa permit is the Van Nuys Development Services Center on Van Nuys Boulevard, between the two.
Parcels within half a mile of the Balboa G Line station, along Victory and Balboa Boulevard, get the transit parking waiver for a new detached unit; we confirm the distance on your parcel at the feasibility visit. The utility work is predictable on these tracts: a short sewer run to the lateral, a 200-amp LADWP upgrade on the main house when the 1950s panel is still in place, and a sub-panel in the unit. Where the lot fits, the LADBS pre-approved Standard Plans shorten plan check; a custom design goes through the same ministerial review.
An ADU in Lake Balboa is permitted through LADBS (City of Los Angeles) at the Van Nuys Development Services Center under ministerial review, which approves a code-compliant unit without a public hearing, and the utility connections go through LADWP. Units under 750 sq ft pay no impact fees, a garage conversion needs no replacement parking, and the unit can be rented on leases of 30 days or more once the Certificate of Occupancy is issued.
Lake Balboa ADU
Planning Ranges (2026)
| ADU Type | Typical Range | What's Involved |
|---|---|---|
| JADU | $90K–$150K | Up to 500 sq ft carved from the existing home with an efficiency kitchen and bath. The lowest-cost legal unit. |
| Garage Conversion | $130K–$200K | Convert an existing garage to a full legal ADU — foundation/slab upgrades, framing, kitchen, bath, and code systems. |
| Detached ADU | $250K–$400K+ | Ground-up standalone unit, typically 600–1,000 sq ft on a Van Nuys lot, including utilities and site work. |
Ranges are typical Lake Balboa estimates for planning only and move with size, finish level, structural scope and site access; after the free on-site visit you get an itemized fixed price in writing.
Three Steps.
Zero Surprises.
Free Feasibility Visit
We visit your Lake Balboa property, confirm what your R1 lot allows, check transit-parking rules, and tell you honestly which path — detached, garage conversion, or JADU — fits your goals and budget.
Design, Plans & Permits
We design the unit, use LADBS Standard Plans where they fit, and carry the submittal and corrections through plan check — with a fixed-price proposal set before construction.
Build & Deliver
One crew builds the ADU to final inspection sign-off, utilities connected and address issued. You get a rentable, legal second home — final payment only after your walkthrough approval.
Start Your Lake Balboa
ADU
Tell us about your lot and your goals and we'll get back to you within 4 business hours. We'll confirm what your property allows before you spend anything on plans.
Prefer to talk it through?
(818) 210-4544What Clients Say About
Our ADU Construction Work
We had a complex ADU project that other contractors kept turning down or quoting absurd prices. Right Image Builders handled permits, design, and construction seamlessly. This is the most professional contractor I've ever worked with in 15 years of owning property in LA.
We had tried two other contractors who couldn't navigate the LADBS permit process for our ADU. Right Image Builders had the permit in hand within six weeks of starting design and delivered a beautiful unit on the exact date promised. It's now generating $2,800 a month in rental income. Best investment we've made in this property.
Questions We
Hear in Lake Balboa
A garage conversion never needs replacement parking under state ADU law. A new detached unit needs no parking space when the lot is within half a mile walking distance of public transit, which covers much of Lake Balboa near the Metro G Line at Balboa station on Balboa Boulevard. Where a space is required, one tandem space on the existing driveway satisfies it.
A garage conversion or JADU takes 6–10 weeks of design and plan check and 3–5 months of construction, about 5–8 months in all; a detached ADU takes 3–5 months of design, engineering and plan check and 6–9 months of construction, 9–14 months to the Certificate of Occupancy. Yes, you can rent it: a standard ADU can be rented long-term (30 days or more) with no owner-occupancy requirement; only a JADU requires the owner to live on the property.
Right Image Builders, a licensed general contractor (CSLB #1021284) based in Valley Glen about 10–15 minutes from Lake Balboa, designs, permits and builds ADUs across the tract streets between Victory Boulevard and Sherman Way, the blocks around Beilenson Park and the lake, the Balboa Boulevard corridor under one fixed-price contract: design, permits through LADBS, and construction by one crew, with final payment only after your walkthrough. 5.0★ on Google (45 reviews) and 4.9★ on Angi (103 reviews).
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2026 planning ranges →
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Which ADU fits the lot →
Let's Build Your
Lake Balboa ADU
Free feasibility visit. Fixed-price proposal. One local team from design and LADBS permits through to a finished, rentable unit.
(818) 210-4544
