A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateTrusted ADU Builders for Woodland Hills Homeowners
An accessory dwelling unit in Woodland Hills is typically permitted faster than in most Los Angeles neighborhoods, with the Department of Building and Safety processing plan-check submissions in roughly 4 to 6 weeks when the drawings are clean and the site survey matches the parcel record. That speed only matters if the builder handling your project knows the local filing sequences and does not stall the paperwork. Fielding ADU Woodland Hills, led by Reed Calloway, has been building accessory units, garage conversions, and room additions under the Garrison Standard since 2006. Every project starts with a written price before any work begins. Call (559) 254-0116 to talk through your lot, your budget, and what is actually buildable.
We put the number in writing, pull permits by the book, and back every build with a 365-day written guarantee. If something fails within that year, we return and correct it at no charge. That is the whole arrangement.
ADU Construction
ADU Construction is the full build of a secondary dwelling on your property, whether attached to the main house, converted from a garage, or framed as a freestanding unit in the rear yard. ADU Builders in Woodland Hills see a standard new-build ADU typically running $220,000 to $420,000 before permit fees, while a garage conversion usually lands between $110,000 and $190,000 depending on the condition of the existing slab, the electrical panel, and how much of the original framing can stay. Fielding ADU Woodland Hills handles the entire sequence: survey, structural drawings, title 24 energy calculations, permit filing, foundation or slab work, framing, mechanicals, and finish. Reed Calloway walks every estimate personally before it is handed over.
Ground-Up vs. Conversion
A conversion reuses an existing structure and works best when the garage is in sound shape and the ceiling height clears seven feet six inches after insulation and drywall. A ground-up build costs more because it carries full foundation, framing, and utility trenching work from scratch. We price both paths honestly and tell you which one your lot actually supports.
What the Written Price Covers
Our written price includes all labor, materials, structural engineering, and the permit package as described in the contract. The number you approve on day one is the number on the final invoice. Change orders happen only when you request a change and sign off on it in writing.
Detached ADU
A Detached ADU is a separate dwelling unit built away from the main home, usually in the rear setback of a Woodland Hills lot. These projects typically cost between $250,000 and $450,000 depending on unit size, site access, slope conditions, and whether the utility run from the main home to the new structure requires trenching through hard soil or around existing trees. Fielding ADU Woodland Hills builds detached units from the slab up, including the electrical subpanel feed, the sewer lateral tie-in, the water meter branch, and all interior finish work. On sloping lots we see in the hills south of Ventura Boulevard, foundation design is the first thing we nail down because it drives the rest of the budget.
Site Access and Excavation
Detached units at the back of the lot need a path for equipment, material staging, and concrete trucks. Some lots work clean; others need a pump truck or hand carry. We flag access constraints in the initial walkthrough so the written price reflects real conditions, not a best-case guess.
Utility Tie-Ins
Sewer, water, and power all have to reach the new unit. On a flat lot that is straightforward; on a hillside lot it can add real money. We include the actual utility run in the written estimate, so there is no surprise line item after excavation begins.
JADU
A JADU (junior accessory dwelling unit) is a unit of 500 square feet or less created entirely within the footprint of an existing single-family home, usually by converting a bedroom, a den, or part of a garage into a small self-contained studio with its own entrance, bath, and kitchenette. In Woodland Hills, a JADU conversion typically runs $70,000 to $130,000 depending on whether the space needs a new exterior door, a small kitchenette, and a separate electrical circuit. Fielding ADU Woodland Hills has handled JADU projects where the owner wanted rental income without giving up yard space, and others where the goal was housing an aging parent close by. The owner occupancy requirement applies to JADUs in most cases, and we explain that rule plainly before plans are drawn.
Owner Occupancy Rules
Los Angeles generally requires the owner to live in either the main house or the JADU. That rule affects how you rent the unit and what you tell prospective tenants. We go over it at the first meeting so there are no surprises later.
Efficiency Kitchen Requirements
A JADU needs a kitchenette, not a full kitchen. That means a small refrigerator, a sink, and a cooking appliance like a two-burner cooktop, all on its own circuit. We spec these details into the plan set so the inspector sees exactly what they expect to see.
ADU Plans
ADU Plans are the architectural and structural drawing sets required to pull a permit in the City of Los Angeles for any accessory dwelling unit. In Woodland Hills, plan fees for a full ADU set typically run $5,000 to $12,000 depending on whether the unit is standard rectangular construction or a custom design with hillside foundation details and upgraded exterior finishes. Fielding ADU Woodland Hills works with licensed architects and structural engineers who prepare the full submittal package: site plan, floor plan, elevations, foundation plan, title 24 energy documentation, and waterproofing details. We file the plans with LADBS and manage the plan-check corrections until the permit is issued.
What a Complete Plan Set Includes
A complete submittal has enough detail that the plan checker does not kick it back for missing information. That means every dimension called out, every window and door scheduled, every electrical fixture located, and the foundation designed for the soil conditions on your specific parcel. Incomplete plans are the most common reason ADU permits stall in Woodland Hills.
Prefab Plan Coordination
When a client chooses a prefab unit from Abodu or Cover, the platform provides factory drawings that still need to be adapted to the site plan, setbacks, and utility locations on your lot. We coordinate that adaptation so the module spec and the site work line up on paper before any money is spent on fabrication.
ADU Contractor
An ADU Contractor is the licensed general contractor who carries the ADU build from permit issuance to final inspection, coordinating the surveyor, the concrete crew, the framers, the plumbers, the electricians, and the HVAC subcontractors under one contract and one schedule. In Woodland Hills, the contractor’s general conditions and supervision typically represent 15 to 20 percent of the total project cost, a number we show as a separate line item on our written estimate. Fielding ADU Woodland Hills is the ADU and room-addition specialist inside the Garrison Partners family, holding itself to the Garrison Standard on every project: written price upfront, permitted work done by the book, and a full year of written guarantee. Reed Calloway oversees each project personally.
Why the Contractor Choice Matters More Than the Plan
A good plan on paper means nothing if the contractor does not sequence the work correctly and pass inspections the first time. We schedule inspections as soon as the work is ready, not when it is convenient, and we do not move to the next phase until the inspector signs off. That discipline is what keeps an ADU build from dragging into a second year.
One Contract, One Point of Contact
You deal with Fielding ADU Woodland Hills, not with five different subcontractors. We hold the contract, we hold the schedule, and we answer for every trade on site. If something is not right, you call one number and we own the fix.
ADU Design
ADU Design is the layout and architectural decision-making phase where unit size, room placement, window location, ceiling height, and exterior finish are set before structural drawings begin. In Woodland Hills, a design engagement for a custom ADU typically runs $8,000 to $18,000, including multiple layout options and a final design package that goes to the structural engineer. Fielding ADU Woodland Hills works with prefab platforms like Abodu, Cover, Dvele, and Mighty Buildings when a factory-built module fits the site, and with conventional construction using James Hardie siding when the design calls for a custom exterior. The design phase is where we reconcile what you want with what the lot, the setbacks, and the budget will allow.
Matching the Build Method to the Lot
Some Woodland Hills lots are perfect for a prefab module that gets craned into place; others need conventional framing because of access, slope, or a design that does not fit the factory catalog. We are fluent in both paths and do not push one over the other unless the site conditions make the choice obvious.
Exterior Finish Decisions
Stucco, James Hardie siding, and composite panel systems all read differently from the street and age differently over time. We show samples, price the options honestly, and let you decide with the numbers in front of you. The exterior finish you choose affects both the permit submittal and the final invoice.
Backyard ADU
A Backyard ADU is a detached or attached accessory unit built in the rear yard of your Woodland Hills home, either as a ground-up structure or as a conversion of an existing detached garage. These builds typically run $250,000 to $450,000 for a new structure and $110,000 to $190,000 for a detached garage conversion, with the final number driven by unit size, site access, and the condition of any existing structure being reused. Fielding ADU Woodland Hills has built backyard units on flat lots served by Canoga Park ADU Builders, on sloped parcels near Topanga Canyon Boulevard, and on tight urban lots where the unit had to fit between a pool and a property line. The Garrison Code applies to all of them: show up in the window, price in writing, by the book, leave it clean, stand behind it for a year.
Backyard Clearances and Setbacks
Los Angeles allows a detached ADU to sit within four feet of the side and rear property lines, but variances exist for odd-shaped lots and some hillside zones. We pull the exact setback requirements for your parcel during the initial feasibility check and design to them from the first sketch.
Working Around Existing Yard Features
Pools, mature trees, retaining walls, and utility easements all shape where a backyard ADU can go and what it will cost. We survey the actual site before we draw anything, and we do not design a unit that will require moving a pool or paying for a tree removal you did not budget for.
Whether your property is on a flat street near the Warner Center or up a winding drive in the hills above Ventura Boulevard, the build conditions in Woodland Hills change fast. We have built home additions and ADUs across the Valley and know how the soil, the access, and the LADBS field office behave in each pocket. If you are also weighing options in the neighboring areas, our ADU Builders in Sherman Oaks service page covers the permit realities on that side of the hill, and our ADU Builders in Encino page walks through costs and lot constraints for the flatlands along Ventura Boulevard. For a direct read on what your Woodland Hills lot can support, see the full scope on our ADU Builders in Woodland Hills page.
Brands We Service
We build conventional units framed on site using James Hardie siding when the design calls for a custom exterior that reads like the main house from the street. That includes HardiePlank lap siding, HardiePanel vertical siding, and the trim boards that hold up to Woodland Hills summers without the paint failures common with cheaper fiber cement substitutes. Our crews know the fastening schedule and flashing details Hardie requires, and we do not shortcut them.
We also work with leading prefab platforms including Abodu and Cover for clients who want a faster build with factory-controlled quality. The module arrives finished to a high standard, and our job is to have the slab, the utilities, and the permits ready before the crane shows up. We coordinated the site work on Abodu and Cover units across the Valley, and we understand their foundation tolerance requirements. Whether you have one of those brands in mind or any other make, we can help you evaluate it against conventional framing and pick the method that fits your lot and budget.
Signs You Need a Pro Right Now
- Your garage slab has settled or cracked at the edges. A conversion built on a slab that is moving will transmit that movement into the walls and the roof structure. We check the slab with a level before we quote a conversion, and if it is not sound we price the repair into the written estimate instead of discovering it after demo starts.
- Your property has a slope greater than 10 percent. Hillside lots in Woodland Hills require foundation engineering and often a soils report before a detached ADU can be permitted. If a contractor quotes you a flat-lot price on a sloped parcel, the number will not hold. We price slopes from the actual site conditions.
- Your electrical panel is at capacity. An ADU adds a significant electrical load, and an older 100-amp panel often will not carry it. We check the panel rating and the service size in the first walkthrough, and we include any panel upgrade in the written price so it does not become a change order later.
- Your sewer lateral runs under the proposed build area. Moving or abandoning an existing sewer line under a new ADU footprint is real money, and it must be handled by a licensed plumber with a permit. We locate and map the lateral before we finalize the unit placement.
- You have already received a bid that seems too low. Low bids on ADU work usually mean the contractor has left out the permit package, the site work, or the utility connections. A written, line-item price from Fielding ADU Woodland Hills shows every allowance and every trade, so you can compare real numbers instead of a round figure that is missing half the job.
Our Process, Step by Step
- 1
Site walk and feasibility check. Reed Calloway or a senior Fielding project lead walks your lot, measures the buildable area, checks the panel, the sewer path, the slope, and the setback lines. We tell you honestly what the parcel will support and what it will not.
- 2
Written price, before any work starts. You get a line-item estimate that includes the design, the engineering, the permit fees, the site work, the utility connections, and the finish trades. The number you approve is the number on the final invoice, with change orders only by your signed request.
- 3
Plans, permit filing, and plan-check management. We bring in the architect and structural engineer, prepare the full submittal package, file with LADBS, and answer plan-check corrections until the permit is issued. This is the phase where most ADU projects stall; we keep it moving.
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The build, inspection by inspection. We sequence the work so every inspection happens when the work is ready, not when it is convenient for the crew. Foundation, framing, rough mechanicals, insulation, drywall, and final all pass before we move to the next phase. You always know who is on your site, because every crew member is background-checked and arrives in a Fielding uniform.
- 5
Final walkthrough and the 365-day guarantee. We walk the finished unit with you, itemize any punch-list work, complete it, and hand over the written guarantee. For one full year, if something fails due to a workmanship defect, we come back and correct it at no charge. That is the Garrison Standard, and it is in writing.
How Much Does ADU Builders Cost in Woodland Hills?
A typical garage conversion in Woodland Hills runs $110,000 to $190,000, a JADU runs $70,000 to $130,000, and a new detached backyard ADU runs $250,000 to $450,000 depending on size, site access, and finish level. The spread is real: a 500-square-foot prefab unit on a flat lot with easy street access lands at the bottom of the range, while a custom 1,000-square-foot ground-up with a sloped foundation, new sewer lateral, and upgraded exterior finish near the top of the hills pushes toward the high end. Plan fees add roughly $5,000 to $12,000, and design work runs $8,000 to $18,000 when it is a custom layout rather than a stock plan.
What drives the price: site access (can the concrete truck reach the pour, or do we need a pump?), slope and soils (hillside foundations cost real money), utility runs (distance from the main house to the unit), the electrical panel rating, and the finish package you select. The way to avoid overpaying is to get a written, line-item price from a contractor who has walked the actual site, not a ballpark from someone who quoted over the phone without seeing the lot. Our free estimate includes the full written price with every allowance and every trade listed. Call (559) 254-0116 and we will set a time to walk the property.
Our Service Area Near Woodland Hills
Fielding ADU Woodland Hills builds across the full stretch of the southwest Valley. We are active in Woodland Hills, Sherman Oaks, Encino, Pacific Palisades, Canoga Park, West Hills, ADU Builders - Tarzana, Winnetka, Calabasas, Reseda, Topanga, and Chatsworth. A call from Warner Center or Walnut Acres gets the same live person on the phone and the same written-price-first process as a call from the hills above Topanga Canyon.
Serving Woodland Hills, CA - Our Local Coverage Area
We’re based in the Woodland Hills area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions About ADU Builders in Woodland Hills
An ADU builder is a licensed general contractor who specializes in accessory dwelling units: detached backyard units, garage conversions, JADUs, and attached additions. The builder handles the design coordination, the permit filing, the foundation, the framing, the mechanicals, the finish work, and the inspections under one contract and one schedule. Fielding ADU Woodland Hills has specialized in ADU construction since 2006 and holds every project to the Garrison Standard: written price upfront, permitted work, and a one-year written guarantee.
A typical garage conversion takes 4 to 6 months from permit issuance to final inspection; a ground-up detached unit runs 8 to 12 months depending on size and site conditions. The plan-check phase adds 4 to 8 weeks on top of that, and hillside foundations or complex utility runs can stretch the build longer. We give you a written schedule with the written price, and we hit the inspection dates on the calendar because the work is sequenced to pass on the first visit. Call (559) 254-0116 for a build timeline based on your specific lot.
A garage conversion typically runs $110,000 to $190,000, a JADU runs $70,000 to $130,000, and a new detached ADU runs $250,000 to $450,000 depending on size, site access, slope, and finish level. The number you approve on day one is the number on the final invoice, because our price is written before any work starts. Call (559) 254-0116 for an exact written quote. Estimates are free.
Yes, we coordinate site work, foundations, utilities, and permits for Abodu and Cover units, as well as other prefab platforms. The module arrives factory-finished, and our job is to have the slab poured to tolerance and the permits issued before the crane is scheduled. We also build conventional units using James Hardie siding and Tuff Shed-style structures when that method fits the budget better.
ADU construction is planned work, not emergency work, but our live person answers every call 24 hours a day, 7 days a week if you need to reach us about a schedule, an inspection date, or an issue on an active site. You will not get a voicemail. Call (559) 254-0116 any time.
The Garrison Standard covers workmanship defects for 365 days from final completion. If something fails inside that year, we return at no charge and correct the defect. The guarantee is spelled out on paper: what it covers, how long it runs, and exactly how we make it right. You get that document at the final walkthrough.
Gather any old site plans or surveys you have, note the age of your electrical panel, and think through how the unit will be used: rental income, a parent, a returning adult child. That use case shapes the layout, the entrance location, and the finish level. Then call (559) 254-0116 to schedule a free site walk, and we will handle the rest from the written price to the final inspection.
Schedule Your ADU Builders Service in Woodland Hills Today
A written price, a permit pulled by the book, and a full year of guaranteed work. That is what you get when you build with Fielding ADU Woodland Hills. Call (559) 254-0116 for a free, no-obligation estimate, and Reed Calloway or a senior project lead will walk your lot and tell you straight what it will cost and what it will take.
Written by Reed Calloway, Owner at Fielding ADU Woodland Hills, serving the San Fernando Valley since 2006.
