A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in La Mirada, CA
Benson ADU Builders handles ADU construction, home additions, and room additions across La Mirada, CA. Most of the homes we work on here are 1950s-60s ranch-style builds with slab foundations and roomy backyards, which means detached ADUs usually fit without major grading or foundation headaches. The trade-off is La Mirada’s design review process, and that’s where local plan knowledge saves months of back-and-forth. Call (562) 362-3885 when you want a written price before any commitment.
Why La Mirada Homes Are Different
La Mirada’s housing stock is remarkably consistent: single-family detached homes, mostly built between 1950 and 1970, wood-frame with stucco exteriors and slab foundations. For an ADU project, that’s good news. Slab-on-grade means no crawlspace surprises, and the large rear yards common in neighborhoods around Foster Road and Santa Gertrudes Avenue leave genuine room for a detached unit without sacrificing the whole backyard.
What complicates La Mirada ADU work is the city’s “second unit” ordinance. The rules allow one ADU per lot, and the primary home must be owner-occupied. Homeowners routinely discover this after paying for preliminary drawings, which is why we flag it on the first call. Beyond that, the 800-square-foot size cap and 16-foot height limit shape nearly every detached design we propose here. La Mirada’s hot, dry summers also push us toward cool-roof material selections and properly sized HVAC, while occasional Santa Ana winds mean anchoring and shear details get extra attention during installation.
Our Main La Mirada Services
These are the three jobs La Mirada homeowners call Benson ADU Builders about most often. Each has its own detailed page with pricing and timeline specifics.
ADU Builders in La Mirada
Detached ADUs are the most common request we field in La Mirada, driven by the large lots and the 800-square-foot maximum that suits a two-bedroom or spacious one-bedroom unit. The process involves site assessment, setback verification against the city’s design review standards, foundation work suited to slab conditions, then framing and finishing. Brand options like Abodu and Cover give homeowners a faster path with factory-built modules that still meet local height and size rules. Full details on ADU Builders in La Mirada.
Home Addition Contractor in La Mirada
For homeowners who want more square footage attached to the existing structure, a home addition in La Mirada means matching stucco, rooflines, and fenestration on a 60-year-old house without it looking patched on. The slab foundation generally supports a single-story addition cleanly, but we verify soil and drainage before committing to a design. The owner-occupancy rule doesn’t apply here, which gives homeowners with rental plans more flexible options. Explore the process on our Home Addition Contractor in La Mirada page.
Room Addition Contractor in La Mirada
A room addition is the smallest scope we handle in La Mirada: an extra bedroom, a home office, or a family room bump-out. These projects move faster through La Mirada than a full ADU because they don’t trigger the second-unit ordinance, but the design review still applies, so we plan for that lead time from day one. James Hardie siding or stucco can match the existing exterior closely enough that the addition reads as original. See Room Addition Contractor in La Mirada for pricing ranges and timeline expectations.
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 La Mirada
We build with Abodu, Cover, Tuff Shed, and James Hardie products in La Mirada. These names are fully vetted and come with their own engineering documentation, which helps move La Mirada design review along faster. Visit our brands to compare options before your estimate.
Pricing for ADU Company in La Mirada, CA
| Service | Typical range in La Mirada |
|---|---|
| Detached ADU (400-800 sq ft) | $180,000 – $320,000 |
| Detached ADU (under 400 sq ft, studio) | $120,000 – $180,000 |
| Garage-conversion ADU | $95,000 – $150,000 |
| JADU (attached junior unit) | $65,000 – $95,000 |
| Prefab ADU (Abodu or Cover units) | $150,000 – $280,000 |
| Second-story addition (400-600 sq ft) | $160,000 – $260,000 |
| Ground-floor addition (200-400 sq ft) | $85,000 – $140,000 |
| Primary-bedroom suite addition | $90,000 – $145,000 |
| Room addition (120-220 sq ft, home office or bedroom) | $55,000 – $105,000 |
In La Mirada, the biggest price movers are site constraints, design-review conditions, and whether you choose site-built framing or a prefab panel system. Whatever direction you go, the price you see is the price you get: Benson writes it down before work starts, and it does not change at the door. Call (562) 362-3885 for a line-item quote on your specific La Mirada lot.
Neighborhoods We Serve in La Mirada
We work throughout La Mirada, including the older ranch pockets near La Mirada Boulevard and the larger-lot areas along the city’s northern edge. Response time for an estimate visit in La Mirada is typically within one to two business days.
- Foster Park area
- Neff Estates
- Creek Park vicinity
- La Mirada Golf Course surroundings
- Santa Gertrudes corridor
Service Area – Cities Near La Mirada
Benson ADU Builders also serves homeowners just outside La Mirada. If you’re in Cerritos, CA, La Palma, CA, Artesia, CA, or Buena Park, CA, the same written-price process and 365-Day Done Right Promise apply.
Serving La Mirada, CA - Our Local Coverage Area
We’re based in the La Mirada 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 La Mirada
We typically schedule La Mirada estimate visits within one to two business days. A live person answers the phone around the clock, so you can book without leaving a voicemail. Call (562) 362-3885 and we’ll confirm a time that works for your schedule.
Yes. We prepare submittal packages that address La Mirada’s design review standards, the 800-square-foot ADU maximum, and the 16-foot height limit. For ADUs, we also confirm the owner-occupancy requirement is met before plans are finalized, which prevents costly surprises later.
Yes. Every La Mirada project receives a written price before any work starts, with no change orders slipped in after the fact. The 365-Day Done Right Promise applies to every job we complete in La Mirada, in writing, on a stamped guarantee.
Ready to talk through your La Mirada ADU, addition, or room expansion? Call (562) 362-3885 for a free estimate, and we’ll put the plan and the price in writing from the first conversation.
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 La Mirada Customers Say
"Fixed quote and clear change orders approved by text."
- Trina M."Communication was the best part. I always knew what was happening that week without having to ask."
- Dolly N."Clean, quiet crew. They respected the neighbors, kept noise to working hours, and swept the driveway every evening."
- Hope C.
