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

ADU Company in Valencia - 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 compact kitchen inside a new ADU
A new modern ADU with wood cladding
The bedroom inside a new ADU
The bathroom inside a new ADU
A small deck outside 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.

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ADU Company in Valencia, CA

Fielding ADU Builders handles ADU construction, garage conversions, and room additions throughout Valencia, CA. We price every job in writing before work starts, and we back the finished build with The Garrison Standard: a full-year written guarantee. Valencia’s planned neighborhoods, HOA density, and hot inland summers shape how we approach foundations, insulation, and permitting here. If you’re weighing an ADU against a room addition, call (361) 315-4177 and we’ll walk you through what your lot can actually support.

Call (361) 315-4177

Why Valencia Homes Are Different

A new two-story ADU over a garage

Valencia is a master-planned community, and that changes the paperwork more than the framing. Most lots sit inside HOAs with their own architectural review on top of city permitting. A detached ADU that clears the city’s setback rules can still stall at an HOA design committee over roof pitch or exterior siding color. We’ve worked enough Valencia jobs to know which questions to ask before you spend money on plans.

The housing stock matters too. Homes near Valencia Town Center and along McBean Parkway lean toward production builds from the 1960s through 1990s, with slab foundations and stucco exteriors. That means trenching for new electrical service, matching stucco texture on additions, and accounting for clay-heavy soil that shifts with the wet winters and dry summers. Newer tracts up in the Bridgeport and Tesoro areas sit on smaller lots with tighter side-yard setbacks, which pushes more homeowners toward attached ADUs or garage conversions instead of freestanding backyard units. Summer heat is the other constant: insulation upgrades and window placement get more attention here than they would closer to the coast.

Our Main Valencia Services

Most Valencia homeowners call us about one of three jobs, and each has its own dedicated page with local pricing and detail.

Room Addition Contractor in Valencia

A room addition in Valencia usually means a ground-floor bump-out for a bedroom, family room, or home office. The work involves matching existing stucco or siding, tying the roofline into the current structure, and extending the foundation onto soil that needs proper compaction before concrete goes down. HOA approval is often the longest lead item, so we recommend starting the design conversation early. Full detail on Room Addition Contractor in Valencia.

Room Addition Contractor in Valencia

Garage Conversion Contractor in Valencia

Garage conversions are common in Valencia’s older tracts, where attached garages sit on slab and the driveway already handles parking. The job turns the garage into conditioned living space: insulation in the walls and ceiling, drywall, flooring raised or leveled to match the house, and a new window or French door where the roll-up door used to be. Electrical panels in these homes sometimes need sub-panel work to carry the added load. Details and pricing are on the Garage Conversion Contractor in Valencia page.

Garage Conversion Contractor in Valencia

ADU Builders in Valencia

Detached ADUs in Valencia run into lot geometry fast. Backyards in the master-planned tracts are compact, and the city’s setback rules plus HOA design review usually rule out anything oversized. We build to fit: attached units off the garage, conversions of existing detached structures, and compact backyard units with the utility runs planned around mature trees and existing drainage. We work with prefab platforms like Abodu and Cover, plus conventional stick-built units. See ADU Builders in Valencia for full pricing and process.

ADU Builders in Valencia
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 Valencia

We work with Abodu, Cover, and Dvele prefab platforms in Valencia, coordinating site prep, foundation, utility trenching, and finish work around each manufacturer’s build schedule. Parts and materials are sourced through our Los Angeles-area suppliers, so lead times stay predictable. See our brands page for the full list we are set up to install.

Pricing for ADU Company in Valencia, CA

Service Typical range in Valencia
Garage conversion $90,000 – $145,000 before permit fees
Detached ADU (prefab, 400 – 600 sq ft) $180,000 – $260,000 before permit fees
Detached ADU (conventional, 400 – 600 sq ft) $220,000 – $320,000 before permit fees
Attached ADU / junior ADU $120,000 – $200,000 before permit fees
Room addition (ground floor, 200 – 400 sq ft) $110,000 – $195,000 before permit fees
Room addition (second story, 400 – 600 sq ft) $180,000 – $290,000 before permit fees
Foundation and utility trenching $12,000 – $35,000 depending on access and soil
HOA design review package and resubmittals $1,500 – $4,500

What moves the number up in Valencia is usually HOA review cycles, clay soil requiring deeper footings, or an electrical panel that needs a service upgrade to carry the new square footage. Whatever the final scope, the price goes in writing before any work begins, and the number you approve is the number on the final invoice.

Neighborhoods We Serve in Valencia

We cover all of Valencia, CA, from the older tracts near the Santa Clarita Valley’s original planned streets up through the newer developments on the east side. Our crews are local to the Santa Clarita Valley and schedule most Valencia estimates within a week of first contact.

  • Bridgeport
  • Northbridge
  • Valencia Summit
  • Tesoro del Valle
  • Old Orchard

Service Area – Cities Near Valencia

Fielding ADU Builders serves the Santa Clarita Valley and the surrounding foothill communities. If you’re in Santa Clarita, CA, Newhall, CA, Canyon Country, CA, or Castaic, CA, we send the same crew, the same written pricing, and the same one-year guarantee. Dispatch is coordinated from our Los Angeles office, with crews working locally in Valencia.

Serving Valencia, CA - Our Local Coverage Area

We’re based in the Valencia 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 Valencia

The living room inside a new ADU

Ready to get started? Free estimates · Free in-home estimates response in Valencia
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 Valencia 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 Valencia

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 Valencia - 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 Valencia

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.

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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

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