A new modern detached ADU in a backyard
ADU Builders · Valencia, CA

ADU Builders 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 former garage converted into a guest house
A second-story addition with a balcony, matched to the original house
A bedroom and desk inside a converted garage
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

Fast, Reliable ADU Builders Across Valencia

Adding an ADU in Valencia means clearing two approval tracks before framing starts: your HOA’s architectural review and the City of Santa Clarita’s permit desk. We’ve built detached units, garage conversions, and JADUs across Valencia’s paseo neighborhoods, and we know which HOAs in the Summit, Northpark, and Tesoro communities ask for what. The number to call for a free written estimate is (361) 315-4177. Reed Calloway leads our Valencia crews, and he’ll be the one walking your lot and putting the scope in writing.

Call (361) 315-4177

Why Fielding ADU Builders Is Valencia’s Preferred ADU Builders Company

A new two-story ADU over a garage

Valencia homeowners call us after a previous contractor went quiet, moved the price, or filed nothing. That’s the customer we’re built for. We hand you a written price before any work starts, and the number you approve on day one is the number on the final invoice. The Garrison Standard covers workmanship defects for 365 days; if something fails, we come back and make it right at no charge. That’s on paper, not a handshake.

Reed Calloway and our ADU Builders team work Valencia jobs with background-checked, uniformed crews. You’ll know exactly who is on your site. Dispatch and scheduling are coordinated from our Los Angeles office, but the crews running your Valencia project are local to the Santa Clarita Valley and know the HOA boards, the city inspectors, and the utility easements here.

We work with major prefab and modular platforms, including Abodu, Cover, and Dvele, plus conventional builds using James Hardie siding. That matters in Valencia, where HOA CC&Rs often cap roof pitch, unit height, and visible exterior materials. Matching the right build method to your lot and your HOA’s rules is half the job.

JADU in Valencia

A JADU in Valencia is a conversion of existing space inside your home’s footprint, typically a spare bedroom, den, or attached garage area turned into a legal studio unit with its own entrance, small kitchen, and bath. For Valencia homeowners whose HOA restricts detached structures or whose lot won’t fit a separate unit, a JADU is usually the fastest permitted path to rental income. A typical JADU conversion in Valencia runs $95,000 to $160,000 before permit fees, depending on whether you’re adding a full second kitchen or working with a wet bar setup, how much plumbing has to move, and whether your panel needs a subpanel for the unit.

When a JADU beats a detached unit

Northbridge and older Valencia Summit homes often have a bonus room or a wide attached garage that converts cleanly. If your HOA caps detached structures or your side setbacks are too tight for a separate unit, a JADU stays inside the existing envelope, which usually shortens the HOA review. You still pull City of Santa Clarita permits, but the architectural review conversation is much shorter when nothing new rises above the existing roofline.

What a Valencia JADU actually involves

We scope the plumbing and panel work first, because moving a drain line or adding a subpanel is where JADU budgets move. The build itself is framing, drywall, a compact kitchen, a bath, and a separate exterior entrance. Most Valencia JADUs finish in 10 to 14 weeks from permit approval to final inspection.

ADU Plans in Valencia

The living room inside a new ADU

ADU Plans in Valencia are the permit-ready architectural drawings, structural calculations, and site plan the City of Santa Clarita requires before it will accept your ADU application. If your HOA has CC&Rs, as most Valencia communities do, you’ll also need a set of plans detailed enough for the HOA’s architectural review committee. A full plan set for a detached or attached ADU in Valencia typically runs $4,500 to $9,500, with JADU plans at the lower end and two-bedroom detached units with grading notes at the upper end.

Plans that clear Valencia HOAs

Valencia HOAs request elevations, finish schedules, and roof details, not just a floor plan. We prepare plans that show the exact James Hardie siding color, window style, and roofline treatment the committee wants to see. That saves you the round-trip rejection letter that stalls so many Valencia ADU projects after design money is already spent.

Plans tied to your lot’s actual conditions

Many Valencia lots slope toward the street or back to a drainage channel, particularly in the older tracts along McBean Parkway and Decoro Drive. A plan set that ignores your lot’s drainage pattern will get kicked back at plan check. We include grading and retaining notes where the lot needs them, so the plans match what the inspector will actually see.

Trusted Brands We Service in Valencia

We install and finish prefab and modular ADU platforms including Abodu, Cover, and Dvele, and we build conventional units with James Hardie siding. For Valencia customers, that means you’re not locked into one build method. A detached unit from Abodu or Cover gets you speed and a controlled factory build; a conventional stick-built unit gives your HOA the finish-matching flexibility some CC&Rs demand. We keep the decision tied to your lot, your budget, and your HOA’s written rules, not to what a sales rep wants to sell that month.

Common ADU Builders Problems We See in Valencia Homes

  • HOA stall after design money is spent. A homeowner pays for plans, then finds out the HOA caps unit height or roof pitch and the plans have to be redone. We pull the HOA architectural review and City of Santa Clarita permits in parallel, so one doesn’t wait on the other and the plans already reflect the CC&R limits.
  • Sloped lots that weren’t in the first bid. Valencia lots along the older Newhall Land tracts often slope toward a rear drainage channel or the street. Grading, retaining walls, and drainage swales add real scope, and we bid them from the start instead of discovering them mid-trench.
  • Utility tie-ins priced as a guess. Panel capacity, gas meter size, and sewer lateral depth vary block to block in Valencia. A turnkey number that ignores the trench work is a number that will move. We scope utilities before we quote, and the price goes in writing.
  • Plans that don’t clear plan check. Santa Clarita plan check is particular about drainage notes and fire access on rear-lot units. We submit plans with the site-specific details already covered, which keeps your permit moving instead of bounced back.

Pricing for ADU Builders in Valencia, CA

A detached one-bedroom ADU in Valencia typically runs $180,000 to $280,000 before permit and HOA fees. A two-bedroom unit with utility upgrades can reach $320,000. A garage conversion in Valencia runs $130,000 to $190,000, and a JADU runs $95,000 to $160,000. What moves these numbers in Valencia specifically: HOA-required exterior finishes, lot slope and retaining work, utility panel and sewer lateral upgrades, and fire sprinkler requirements the building code triggers on certain floor plans. We’ll walk your lot, check your panel and sewer, and give you a written line-item price before any work starts. Call (361) 315-4177 to schedule that free estimate.

We Also Serve Cities Near Valencia

Our crews work ADU projects throughout the Santa Clarita Valley. We serve ADU Builders in Valencia and the surrounding communities of Santa Clarita, Newhall, Canyon Country, and Castaic. If you’re in one of those areas and weighing a detached unit, garage conversion, or JADU, the same written-price-first process applies.

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 Builders in Valencia

Why Valencia Chooses Fielding ADU Builders

We set the standard for adu builders in Valencia.

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 Valencia

Getting your adu builders handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your adu builders 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.

What happens when you call

  1. 1
    A real person answersNo phone trees - talk to a local adu builders 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

Trusted by homeowners across Valencia and surrounding areas.

★★★★★

"Built a detached ADU behind our house. The builder is a veteran and runs the site like a platoon: schedule posted, crew on time, everything labeled. Finished within a few days of the date."

Ken W. · Verified customer
★★★★★

"Room addition over the back patio. Framing is square, windows are tight, and the roofline matches."

Danny L. · Verified customer
★★★★★

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

Marian J. · Verified customer

More ADU services in Valencia

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

Getting started with Fielding

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