A new rear addition with a vaulted beamed ceiling and tall windows
Room Addition Contractor · East Los Angeles, CA

Room Addition Contractor in East Los Angeles - Plans, Permits & Build, One Fixed Price

We handle the design, the engineering, and the city permit, then build it. One contract, one crew, one accountable point of contact. Free feasibility check on your lot before you commit.

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A single-story rear room addition with tall windows and a new patio
A new sunroom addition with three walls of windows
The bathroom inside a new ADU
A small deck outside a new ADU
A former garage converted into a guest house
The living room inside a new ADU
A bedroom and desk inside a converted garage
A new two-story ADU over a garage
Every project starts with

A free site visit, a check of what your lot allows and a written, line-item price.

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Fast, Reliable Room Addition Contractor Across East Los Angeles

Most room additions in East Los Angeles cost between $180 and $320 per square foot before permit fees, which puts a 400 sq ft primary suite at roughly $72,000 to $128,000. The permit path through LA County’s East LA field office is the part that trips people up, because the old tract lots here carry setback rules that most neighboring cities don’t enforce the same way. We know those rules because we’ve pulled permits on Michigan Avenue, up in City Terrace, and across the unincorporated pockets where county zoning applies instead of city zoning. If you’re planning a room addition, call (361) 315-4177 and we’ll give you a written price before any work starts.

Call (361) 315-4177

Why Fielding ADU Builders Is East Los Angeles’s Preferred Room Addition Contractor Company

A second-story addition that matches the existing roofline

Fielding ADU Builders runs on The Garrison Standard, which has been in place inside Garrison Partners since 2006. The standard is simple: show up in the window, put the price in writing before a single nail is driven, build by the book, leave the site clean, and stand behind the work for a full year. That last part matters in East Los Angeles, where a lot of homeowners have already been through a contractor who disappeared after the final check. Reed Calloway runs our crews, and every person who shows up at your door is background-checked and in uniform, so you know exactly who’s on your property.

We answer the phone with a live person around the clock. Not a callback queue. When you call with a question about your addition, a real person picks up, whether it’s noon or midnight. The written price you approve on day one is the number on the final invoice. If something fails inside 365 days, we come back and make it right at no charge. That’s not a slogan. It’s written into every contract we sign in East Los Angeles.

Home Addition Plans in East Los Angeles

Home Addition Plans in East Los Angeles are where the project gets decided before any framing starts. A real set of plans here isn’t just a sketch; it shows the existing foundation lines, the roof tie-in, the window and door schedule, and the energy compliance details the county reviewers want to see. Most East LA lots were platted under early-20th-century tract maps with 25-foot front setbacks and 5-foot side yards. Push the addition toward the rear property line and you often trigger a rear-yard setback variance or a lot-coverage issue that a neighboring city like Montebello wouldn’t require. We handle that paperwork as part of the job.

Permit-Ready Drawing Sets

The plans we prepare for East Los Angeles projects go to LA County’s East LA field office with the correct zoning designation and lot calculations already marked. That saves homeowners weeks of back-and-forth. A permit-ready set for a 300 to 500 sq ft addition typically runs $4,000 to $9,000 depending on how much structural detail the existing house demands.

Floor Plan And Scope Review

Before any plans get drawn, we walk the lot and the existing structure. On pre-1940 bungalows, that means checking the cripple wall condition and foundation depth before anyone opens a wall. If the foundation needs work, the plan set changes, and so does the honest price. You’ll see that number in writing before we start.

In Law Suite Builders in East Los Angeles

A second-story addition with a balcony, matched to the original house

In Law Suite Builders in East Los Angeles handle a specific type of addition: a space with a separate entrance, a kitchenette, and a bath, built for a family member who needs to live close but not in the same square footage. The county plans examiners here look carefully at whether the project is attached to the primary dwelling and whether it creates a second kitchen. That distinction changes the permit path from a standard room addition to something closer to an ADU review, and it changes the zoning rules that apply. We walk that line every week in East LA.

Attached Suites With Separate Entrances

An attached in-law suite with its own exterior door, usually 350 to 600 sq ft, runs $75,000 to $160,000 in East Los Angeles before permit fees. The variance is wide because of foundation condition, roof complexity, and whether the lot triggers coverage limits. We give you the range in writing before you commit to anything.

Kitchenette And Bath Integration

Adding a kitchenette means running gas or upgrading an electric panel, and the county inspector will come through for that. We pull the electrical and plumbing permits as part of the job and schedule the inspections in the right order. Our crew built a 400 sq ft primary-suite addition off the back of a 1923 bungalow on Michigan Avenue in City Terrace, matching the existing stucco and re-framing the roofline while keeping the original exterior wall intact. The homeowners used it as an in-law suite with a separate entrance and kitchenette. We passed framing and insulation inspections on that job, then finished with James Hardie lap siding to blend the addition into the original facade.

Trusted Brands We Service in East Los Angeles

We work with whatever the project calls for, including conventional builds with James Hardie siding and prefab platforms like Abodu, Cover, and Dvele when the lot and budget favor modular construction. We don’t push one method on every homeowner. A rear lot on Rowan Avenue with tight access reads differently than a wide lot in the 90063 ZIP. We’ll tell you which approach keeps the cost and the timeline honest, and we stock the trim and siding details locally so the punch list doesn’t drag out.

Common Room Addition Contractor Problems We See in East Los Angeles Homes

  • Assuming the addition can be permitted as an ADU. East LA plans examiners scrutinize whether the project is attached to the primary dwelling and whether it creates a second kitchen. That single fact changes the permit path and triggers different zoning review, and getting it wrong adds weeks.
  • Not verifying foundation depth on pre-1940 bungalows. A lot of the housing stock between Atlantic and Indiana Street dates to the 1920s and 1930s. Opening a wall and finding a cracked cripple wall or shallow footing is a common surprise that adds structural work and inspection delays mid-project.
  • Overlooking the rear-yard setback on narrow lots. The 5-foot side yards and 25-foot front setbacks leave less buildable area than people expect. When the addition pushes toward the rear line, a variance application can add months to the permit timeline. We flag this at the first walkthrough.
  • Underestimating the stucco and roofline match work. East LA has a lot of older stucco bungalows with specific texture patterns. Matching that finish so the addition doesn’t read as a box bolted onto the back of the house takes real time and a crew that knows how to float and blend the texture.

Pricing for Room Addition Contractor in East Los Angeles, CA

A room addition in East Los Angeles typically runs $180 to $320 per square foot before permit fees. A 300 sq ft bedroom and bath lands around $55,000 to $95,000. A 600 sq ft addition with a kitchenette pushes $110,000 to $190,000. The spread comes from what we find when we open walls: foundation condition, electrical panel capacity, roofline complexity, and whether the lot triggers a setback variance. Permit fees in the county-run East LA office add another $3,000 to $8,000 depending on scope. Anything that would change the price gets put in writing before work starts. Call (361) 315-4177 for a free estimate.

We Also Serve Cities Near East Los Angeles

Our East Los Angeles crews also run jobs in Los Angeles, Long Beach, Anaheim, and Riverside. If you’re just over the city line and wondering whether your lot rules are different, the answer is yes, usually. We’ll walk the specifics with you. The Room Addition Contractor team coordinates scheduling from our Los Angeles office and serves East Los Angeles locally.

Serving East Los Angeles, CA - Our Local Coverage Area

We’re based in the East Los Angeles 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 Room Addition Contractor in East Los Angeles

Why East Los Angeles Chooses Fielding ADU Builders

We set the standard for room addition contractor in East Los Angeles.

No Change-Order Surprises

The written quote you sign is the price you pay. Anything we find mid-job gets priced and approved by you in writing before we touch it.

Licensed & Insured

Fully certified technicians who meet all local and state licensing requirements.

Upfront Pricing

No hidden fees, no surprises. You approve the price before any work begins.

Guaranteed Work

Every repair and installation is backed by our workmanship warranty and satisfaction guarantee.

How It Works in East Los Angeles

Getting your room addition contractor handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your room addition contractor needs and we provide an upfront, transparent quote - no obligation, no hidden fees.

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in East Los Angeles - typically within 30-60 minutes, with parts stocked on the truck.

3

Problem Solved, Guaranteed

We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

What happens when you call

  1. 1
    A real person answersNo phone trees - talk to a local room addition contractor pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
  4. 4
    You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.

What East Los Angeles Customers Say

Trusted by homeowners across East Los Angeles and surrounding areas.

★★★★★

"Honest feedback on what the lot could fit. Told me up front what would fit on the lot and what the setbacks would allow."

Rita C. · Verified customer
★★★★★

"Clear price breakdown. Change orders were all in writing."

Hal P. · Verified customer
★★★★★

"Solid job. Cabinet delivery was a week behind but they worked around it."

Ben G. · Verified customer

Small homes that live large

Vaulted ceilings, compact kitchens and private decks: the details that make an ADU feel like a home.

Read our ADU guides
A compact kitchen inside a new ADUA kitchenette inside a converted garageA new modern ADU with wood claddingA new bathroom inside a converted garageThe bedroom inside a new ADUAn attached garage converted into living space

More ADU services in East Los Angeles

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Getting started with Fielding

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