A quiet residential street with a new ADU behind one of the homes
Carson, CA

ADU Company in Carson - 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.

✓ Licensed & Insured ✓ Written quotes ✓ Permits handled
Schedule Free Estimate

Call to schedule your free estimate

Free Estimate on SiteCalls Answered by a Live Person, 24/7Background-Checked TechniciansProudly serving local communities 20+ years
🛡 Licensed & Insured 📝 Written Fixed-Price Quotes 💲 No Change Orders · Free Estimates
The living room inside a new ADU
A new two-story ADU over a garage
A compact kitchen inside a new ADU
A new modern ADU with wood cladding
The bedroom inside a new ADU
A bedroom and desk inside a converted garage
A single-story rear room addition with tall windows and a new patio
An attached garage converted into living space
Every project starts with

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

Get your free estimate

ADU Company in Carson, CA

Fielding ADU Builders handles accessory dwelling units, garage conversions, and room additions across Carson. Most Carson homes were built between the 1950s and 1970s, which means slab foundations, older electrical panels, and lot dimensions that don’t always cooperate with modern setback rules. We price the work in writing before anything starts and back it for a full year under The Garrison Standard. Call (361) 315-4177 and you’ll get a person, not a voicemail.

Call (361) 315-4177

Why Carson Homes Are Different

A small deck outside a new ADU

Carson’s housing stock is mostly mid-century single-family homes on rectangular lots, concentrated in neighborhoods like Victoria Park, Keystone, and the area south of Carson Street toward the SouthBay Pavilion. That era of construction creates a specific set of conditions for ADU and addition work. Many homes still have their original 100-amp electrical panels, which need an upgrade before a detached ADU or a converted garage with a kitchen can pass inspection. A lot of Carson backyards sit on soil that drains slowly, and we regularly correct grade before pouring a slab for a prefab unit like an Abodu or Cover model.

Some Carson properties fall under specific residential design standards depending on their proximity to major corridors or the older subdivisions near Dominguez Park. When a project needs a setback variance, we handle the paperwork with the city as part of the written scope and price. The permit process in Carson takes planning, and the closer the work is to a property line, the more the city wants documented. We’ve learned to file early and keep the drawings tight.

Our Main Carson Services

Carson homeowners call about two jobs far more than anything else: converting an underused garage into livable square footage, and building a detached ADU in the backyard. We also handle full room additions when the house itself needs to grow.

Room Addition Contractor in Carson

A room addition in Carson usually means extending off the back of the house or building out over a portion of the side yard. On Carson’s typical 50-foot-wide lots, we have to think carefully about how much yard to give up and where the addition meets the existing roofline. Mid-century homes here often have low-slope roofs, so we pay extra attention to drainage and flashing at the transition point. Written pricing comes first, permits get pulled properly, and the work is backed by The Garrison Standard. See how Room Addition Contractor in Carson work is scoped and priced.

Room Addition Contractor in Carson

Garage Conversion Contractor in Carson

Converted garages are popular in Carson because many homes were built with wide, attached garages that rarely hold more than storage. A conversion means insulating the existing shell, running new electrical, and often adding a bathroom line to the main sewer. Older Carson garages sometimes have a step-down floor, and we level it as part of the build. The work comes with a written price before day one and a one-year written guarantee. Read the full walkthrough on our Garage Conversion Contractor in Carson page.

Garage Conversion Contractor in Carson

ADU Builders in Carson

Backyard ADUs in Carson range from prefab units we install on a prepared foundation to conventional stick-built structures finished with James Hardie siding. The city’s accessory dwelling unit rules changed a lot over the last few years, and Carson now permits detached units on most single-family lots. We match the build method to the lot and the budget, and every crew member on your property is background-checked and uniformed. Get the details on our ADU Builders in Carson page.

ADU Builders in Carson
Need help today?Fast, friendly service and a no-obligation free estimate.

Call (361) 315-4177

What happens when you call

  1. 1
    A real person answersNo phone trees - you reach a local pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched.
  3. 3
    A background-checked tech heads outLicensed & insured, dispatched right away.
  4. 4
    You approve before work beginsNothing starts until you say go.

Brands We Service in Carson

We build with and service the major names in ADU construction. That includes prefab manufacturers like our brands line covers: Abodu, Cover, and Dvele units all get installed by our crews in Carson. For conventional builds we rely on James Hardie siding and standard framing materials. Most prefab units arrive ready for set-out, and we handle the foundation, utility connections, and finish work.

Pricing for ADU Company in Carson, CA

Service Typical range in Carson
Garage conversion $85,000 – $165,000 before permit fees
Detached ADU (prefab, turnkey) $200,000 – $350,000 before permit fees
Detached ADU (conventional build) $250,000 – $420,000 before permit fees
Room addition (attached, finished) $120,000 – $240,000 before permit fees
Electrical panel upgrade $3,500 – $6,000
Foundation and pad work for ADU $15,000 – $35,000
Bathroom addition (inside ADU or addition) $25,000 – $55,000
Kitchenette in garage conversion $18,000 – $40,000

What pushes a Carson project higher is almost always one of three things: an older home that needs electrical service brought up to code, soil that needs extra compaction before the pad goes down, or a setback variance that requires additional engineering work. Whatever the number turns out to be, you get it in writing before any work starts – and that written price is the price on the final invoice.

Neighborhoods We Serve in Carson

Carson is compact but varied, and we work across the whole city. Response time for a free estimate is typically within a few days, depending on the crew’s current schedule. We serve:

  • Victoria Park
  • Keystone
  • Carson Pointe
  • North Carson
  • South Carson, near the SouthBay Pavilion

Service Area – Cities Near Carson

In addition to our full coverage of Carson, we run crews in the surrounding South Bay and Gateway Cities. If you’re in Torrance, CA, Lakewood, CA, Lomita, CA, or Compton, CA, you’re inside our regular scheduling area and can reach us at the same number.

Serving Carson, CA - Our Local Coverage Area

We’re based in the Carson 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 Carson

The bathroom inside a new ADU

Ready to get started? Free estimates · Free in-home estimates response in Carson
Call (361) 315-4177

What happens when you call

  1. 1
    A real person answersNo phone trees - talk to a local adu 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 Carson Customers Say

★★★★★ 4.9 from 8+ reviews

"Foundation and slab poured on schedule. Crew kept the yard orderly."

- Marian J.

"Garage conversion with a new bath and kitchenette. Permit was handled by them. Inspection passed first time."

- Sheila B.

"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.

How It Works in Carson

Getting your adu handled is simple and fast.

1

Call or Request a Free Estimate

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

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Carson - 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.

More ADU services in Carson

Every build below starts the same way: a free site visit and a written price.

Getting started with Fielding

Every project starts with a conversation and a written price. Here is how to take the first step.

A project lead measuring a backyard ADU site with the homeowner

Free site visit

A project lead walks the lot with you, checks what it allows and hands you a written, line-item price. No obligation.

Book a site visit
A building crew carrying lumber to a backyard ADU site

Find your local team

Each location is independently owned and works to the same written standard. Enter your ZIP code to reach yours.

A worker protecting the lawn before an ADU build starts

Read our written promise

What we promise on every job, written down, with the terms spelled out before any work starts.

Our promise

Current Offers

Bring these savings to your next appointment.

Free On-Site Estimate & Written Quote

No obligation. We measure, price the job in writing, and the quote is yours to keep.

Expires Mar 31, 2027
Always

Written Price Before Any Work Starts

Expires Mar 31, 2027
Included

Written Guarantee on Every Repair

Expires Mar 31, 2027
Free

Free Second Visit if the Repair Fails

Expires Mar 31, 2027

Request a Free Estimate

Tell us what's going on in Carson - we'll get back to you fast. No obligation.

By sending this request, you acknowledge our Privacy Policy and consent to receive communications by telephone, text message, or email about your request, including by the independent contractors we may refer it to.

Call Now - 24/7 Dispatch
Areas We Serve
Call Now - 24/7 Dispatch