ADU Company in Florence-Graham, CA
ADU construction in Florence-Graham runs through LA County’s Department of Regional Planning, not the City of LA, which means the fee schedules, setback rules, and plan-check timelines are entirely different from what most homeowners find online. We’re Seedling ADU Builders, and our crews work Florence-Graham jobs regularly, from garage conversions on 1940s bungalows to new detached units on compact 4,000-square-foot lots. Call (707) 383-5338 to schedule your free estimate, and we’ll walk you through the County process before any plans are drawn.
Why Florence-Graham Homes Are Different
Florence-Graham sits in the flat, heat-intensive southern LA Basin where summer temperatures climb higher than coastal Los Angeles. That heat changes how we size cooling and ventilation in compact ADUs, especially garage conversions where airflow was never part of the original design. Every new structure here also meets California’s full seismic code, which adds foundation and structural work that unpermitted conversions skip entirely.
The housing stock is distinctive: dense postwar single-family bungalows and small ranch homes built largely in the 1940s through 1960s, most with detached single-car garages on 4,000 to 6,000 square foot lots. Many of those garages were already converted informally to casitas by extended families. Legalizing these unpermitted structures is now one of the most common project types we see, but it requires navigating LA County’s ADU ordinance and often bringing electrical, plumbing, and structural elements up to current code.
Here’s what trips up even experienced contractors: Florence-Graham uses 90001 and 90002 ZIP codes with a Los Angeles mailing address, so homeowners and builders routinely apply City of LA rules. The County’s separate ADU ordinance, different setback tables, and distinct plan-check procedures mean wrong-jurisdiction applications stall and restart. We open every Florence-Graham conversation by clarifying this, because no one wants to pay for plans that won’t pass the right desk.
Our Main Florence-Graham Services
Florence-Graham homeowners call us most often for these three project types, each with its own page and local details.
Home Addition Contractor in Florence-Graham
Home additions in Florence-Graham typically expand the original footprint of postwar bungalows where families have outgrown two or three bedrooms. We see a lot of rear additions on these narrow lots, which means working within LA County’s side-yard setback rules rather than City of LA tables. Our crews use shoe covers and drop cloths inside the existing home, and we schedule noisy work around school hours when kids are in the house. Home Addition Contractor in Florence-Graham
Garage Conversion Contractor in Florence-Graham
Garage conversions are the most cost-effective ADU path in Florence-Graham because so many homes already have that detached single-car structure. The challenge is often what’s inside: informal electrical runs, unpermitted plumbing for a sink or bathroom, and no insulation or mechanical cooling for the heat basin climate. We assess whether the slab and framing can carry a legal conversion or if partial rebuild makes more sense. Every project gets a written price before work starts. Garage Conversion Contractor in Florence-Graham
ADU Builders in Florence-Graham
New detached ADUs in Florence-Graham face tight lot coverage on 4,000 to 6,000 square foot parcels, so we design for efficiency from the first sketch. We work with prefab and modular brands including Abodu and Cover that manufacture off-site and crane-set on prepared foundations, reducing construction time in the yard. Whether stick-built or prefab, every ADU we build in Florence-Graham carries our 365-Day Done Right Promise. ADU Builders in Florence-Graham
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 Florence-Graham
We partner with leading ADU and building brands including James Hardie, Abodu, Cover, and Dvele, sourcing materials and prefab units suited to Florence-Graham’s climate and lot constraints. Our Los Angeles office coordinates scheduling and keeps common parts in regional stock for faster turnaround on service calls and finish work. See our brands for the full lineup.
Pricing for ADU Company in Florence-Graham, CA
| Service | Typical range in Florence-Graham |
|---|---|
| Garage conversion ADU (basic, existing structure) | $85,000 – $140,000 |
| Garage conversion with full kitchen and bath | $120,000 – $185,000 |
| New detached studio ADU (1 bed/1 bath) | $220,000 – $320,000 |
| New detached 2-bedroom ADU | $310,000 – $450,000 |
| Home addition (per square foot) | $350 – $550 |
| Foundation work for ADU (seismic upgrade included) | $25,000 – $55,000 |
| Electrical service upgrade for ADU | $8,000 – $18,000 |
| Permit and plan-check fees (LA County) | $5,000 – $12,000 |
| Legalization of unpermitted existing structure | $45,000 – $95,000 |
| HVAC/cooling system for compact ADU | $6,000 – $14,000 |
Prices in Florence-Graham push toward the higher end when we need to bring unpermitted electrical or plumbing to code, or when the existing garage slab won’t carry a legal conversion and requires replacement. We give every family a written, line-item price before any work begins, with no surprise additions after crews arrive.
Neighborhoods We Serve in Florence-Graham
Our crews work across Florence-Graham’s residential blocks, from the older bungalow clusters near Firestone Boulevard to the denser ranch-home streets closer to Graham Avenue. Dispatch and scheduling are coordinated from our Los Angeles office, with Florence-Graham projects typically starting within two weeks of permit approval.
- Florence
- Graham
- Firestone Park area
- East Florence-Graham
- West Florence-Graham
Service Area – Cities Near Florence-Graham
We build throughout the southern LA Basin and surrounding communities. Homeowners near Florence-Graham also call us from Los Angeles, CA, Long Beach, CA, Anaheim, CA, and Riverside, CA. Each city carries its own permit jurisdiction and building department, and we adjust our process accordingly.
Serving Florence-Graham, CA - Our Local Coverage Area
We’re based in the Florence-Graham 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 Florence-Graham
No. Florence-Graham is unincorporated Los Angeles County, so your ADU permit runs through LA County’s Department of Regional Planning and County Building & Safety, not LADBS. Using City of LA rules or fee schedules will cause delays and costly restarts. Call (707) 383-5338 and we’ll confirm your jurisdiction before any plans move forward.
Yes, this is one of our most common Florence-Graham projects. Many garages here were converted informally to casitas years ago. We assess what’s salvageable, what needs replacement, and what the County will require for legalization, then give you a written price for the full scope. Call (707) 383-5338 for a free estimate.
LA County’s ADU plan check typically runs 8 to 16 weeks for complete applications, longer if corrections are needed. We submit only after confirming your project meets County setback, height, and utility requirements, which reduces revision rounds. Call (707) 383-5338 and we’ll review your timeline before you commit.
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 Florence-Graham Customers Say
"Garage conversion into a studio. They sealed off the work area so dust didn't get into the house, and cleaned up every day before leaving. Calm, careful team to have around."
- Darnell Hobbs"Added a backyard cottage. The team protected our existing landscaping and left the yard clean every evening. Gentle, respectful, and they walked us through each stage calmly."
- Tamara Welsh"Garage to studio conversion with us living right there. They sealed off the dust, cleaned up daily, and respected our quiet hours. No surprise costs. Beautiful."
- Terrence Boylan