







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Tarzana, CA
Fielding ADU Builders handles accessory dwelling units, garage conversions, and room additions in Tarzana, CA. Most of the work we do here falls into two buckets: adding square footage to a mid-century ranch, or converting an existing garage into a permitted living space. Tarzana lots skew wide, and the housing stock is older than what you’ll find in newer San Fernando Valley developments, which means drainage, foundation condition, and setback rules drive the conversation on nearly every job. Call (361) 315-4177 and we’ll walk the lot with you.
Why Tarzana Homes Are Different

Tarzana was largely built out between the 1940s and the 1970s, and that shows up in the bones of the houses. Many of the homes south of Ventura Boulevard sit on flat, generous lots with single-story ranches that are straightforward to add onto, provided the floor plan allows it. North of Ventura, the terrain climbs toward the Santa Monica Mountains, and we see more split-level and hillside foundations there. A hillside addition or garage conversion in Tarzana often triggers a soils report requirement from the Los Angeles Department of Building and Safety, which most flat-lot projects skip.
The other thing that defines Tarzana work is the heat. Summer temperatures regularly push past 100 degrees, and that changes how we handle everything from slab pours to insulation. We schedule exterior work in the early morning during July and August, and we spec insulation values above the state minimum on ADUs here because a west-facing backyard unit in Tarzana takes direct afternoon sun. It’s one of the reasons we put every price in writing before work starts: the conditions are known, the plan accounts for them, and the number doesn’t move.
Permitting runs through the City of Los Angeles, and Tarzana falls under some specific planning rules for accessory units. Setback requirements, lot coverage limits, and parking requirements all come into play, and they vary by zone. We pull permits on every project, and our paperwork goes in knowing what the Tarzana planner’s office will ask for.
Our Main Tarzana Services
Tarzana homeowners call us most often about two things: adding a room to a house they’ve outgrown, and turning a garage into living space. Here’s what each involves here.
Room Addition Contractor in Tarzana
A room addition in Tarzana usually means extending a ranch home out the back or wrapping around one side of the house. The lot width matters more than anything else: many Tarzana parcels are 60 to 75 feet wide, which gives us room to add without triggering a setback variance. We handle foundation work, framing, roofing tie-ins, and the finish work as one crew with one schedule. If you’re considering a primary suite, a family room, or a home office addition, Room Addition Contractor in Tarzana has the details, including pricing.

Garage Conversion Contractor in Tarzana
Garage conversions are the most common ADU path in Tarzana because so many homes here still have detached two-car garages that sit empty. The conversion itself involves raising the slab to meet living-space code, adding insulation and drywall, replacing the garage door with a wall and windows, and running new electrical and plumbing. Some Tarzana homeowners lose their covered parking, so we check whether the city will require a parking replacement before we quote the job. See Garage Conversion Contractor in Tarzana for the full scope and cost.

ADU Builders in Tarzana
Backyard ADUs are where Tarzana’s wide lots shine. A detached unit gives you a separate address, its own meter, and rental income potential without touching the main house. We build both site-built ADUs and prefab units on Tarzana lots, and the right choice usually comes down to access: if a crane or a large truck can get into the back yard, a prefab unit from Abodu or Cover goes up in weeks instead of months. If access is tight, we build stick-framed on site. ADU Builders in Tarzana covers everything from design constraints to hard numbers.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Tarzana
We install and finish our brands of prefab and modular ADU systems in Tarzana, including Abodu, Cover, and Dvele. Each platform has different foundation, utility, and finish requirements, and our crews are fluent in all three.
Pricing for ADU Company in Tarzana, CA
| Service | Typical range in Tarzana |
|---|---|
| Standard room addition | $85,000 – $155,000 |
| Primary suite addition | $110,000 – $190,000 |
| Garage conversion (permitted, with kitchenette) | $75,000 – $130,000 |
| Garage conversion (permitted, full bathroom + kitchen) | $95,000 – $165,000 |
| Detached ADU (site-built, one bedroom) | $140,000 – $220,000 |
| Detached ADU (site-built, two bedroom) | $175,000 – $280,000 |
| Prefab ADU (one bedroom, including site work) | $130,000 – $210,000 |
| Prefab ADU (two bedroom, including site work) | $165,000 – $265,000 |
What pushes a Tarzana job toward the top of these ranges: hillside foundations, difficult rear-yard access for equipment, upgraded seismic requirements, or a lot that needs drainage work before we can start building. Every quote we give is a fixed written price, so the number you approve before work starts is the number on the final invoice.
Neighborhoods We Serve in Tarzana

We work throughout Tarzana, from the flat streets south of Ventura Boulevard up into the hills north of the boulevard. Our crews are in the area most weeks, so scheduling is straightforward.
- Melody Acres
- Tarzana Hills
- South of Ventura Boulevard
- North of Ventura Boulevard
- Reseda Boulevard corridor
If you’re within Tarzana city limits, we’re close by. Most estimates are scheduled within a few days of your call.
Service Area – Cities Near Tarzana
Fielding ADU Builders serves Tarzana and the surrounding San Fernando Valley communities. Homeowners in Encino, CA, Reseda, CA, Woodland Hills, CA, and Canoga Park, CA work with the same crew, the same written pricing, and the same one-year written guarantee.
Serving Tarzana, CA - Our Local Coverage Area
We’re based in the Tarzana area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Company in Tarzana

For a standard garage conversion or room addition, plan on 3 to 6 months for City of Los Angeles plan check and permit issuance. ADUs are often faster because state law streamlines the review. We handle the paperwork end to end. Call (361) 315-4177 and we’ll give you a realistic timeline for your specific project.
California law limits what HOAs can prohibit, but some Tarzana HOAs still have architectural review requirements that add a few weeks to the process. We submit the required documentation and coordinate with the HOA board so the project stays on track. We’ll flag any HOA requirements during the estimate.
Yes. One Fielding ADU Builders project manager runs the job from demo to final inspection, and our background-checked, uniformed crew does the work. Subcontractors are only brought in for trades like electrical and plumbing, and they answer to the same written scope of work. The Garrison Standard applies to the whole project: written price upfront, permitted, and a one-year written guarantee on workmanship defects.
If you’re ready to talk numbers, call (361) 315-4177. We’ll walk the property, answer the hard questions, and hand you a written price before any work starts. The estimate is free.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Tarzana Customers Say
"Insulation, drywall, and finishes were all well done. Feels like part of the house."
- Pete O."Built a detached ADU behind our house. The builder is a veteran and runs the site like a platoon: schedule posted, crew on time, everything labeled. Finished within a few days of the date."
- Ken W."Room addition over the back patio. Framing is square, windows are tight, and the roofline matches."
- Danny L.



