Fast, Reliable New Detached ADU Across Woodland
A new detached ADU in Woodland typically runs $265,000-$385,000 all-in, from permit set through final inspection, depending on whether you choose site-built or a prefab system. Most Woodland projects we complete take 9-14 months from signed contract to certificate of occupancy. If you’re weighing a backyard unit on a tight lot off College Street or a deeper parcel near Pioneer Park, the numbers change with site access, historic-inventory review, and utility routing. Call (971) 497-2402 and we’ll walk through your specific parcel before you commit to anything.
We know Woodland’s lots, its permit counter, and its older neighborhoods. That matters because a detached ADU here isn’t a generic build. It’s a project shaped by historic-inventory triggers near downtown, narrow side yards in 1950s tract blocks, and a summer climate that punishes any builder who skimps on HVAC sizing. We design, permit, and build under one contract at one written price. No designer-versus-builder blame gap. Just a permit set, a photo record, and a written warranty.
Why Ellery ADU Studio Is Woodland’s Preferred New Detached ADU Company
Ellery ADU Studio has designed, permitted, and built 900+ ADUs since 2015, every one with a written price before work started and a documented photo record at completion. Nadia Ellery leads the studio, and the 365-Day Done Right Promise sits in writing in every contract: if the finished ADU isn’t built to the permitted drawings, we make it right. That clause matters when you’re spending six figures on a structure that should outlast your mortgage.
Woodland homeowners come to us after reading horror stories about designer-versus-builder finger-pointing. Our one-contract model removes that dynamic entirely. The drawings, the permit set, and the construction are a single scope at a single price. When the city asks for a design-compatibility review on a historic-inventory parcel near downtown, we’re the ones who pre-screen it, not someone who hands you a change order later.
Our crews serve Woodland locally. Dispatch and scheduling coordinate from the brand’s Sacramento office, but the people on your site know Woodland’s work-hour rules, its soil conditions, and its permit sequencing. A live person answers calls 24/7 at (971) 497-2402. No voicemail queue, no callback promise that evaporates.
Our New Detached ADU Services in Woodland
Custom Built ADU
A site-built detached ADU in Woodland gives you full control over footprint, roofline, and finishes, which matters on a historic-inventory parcel where the city reviews materials and massing. We handle the pre-application meeting with the historic preservation planner before drawings go in, so your design doesn’t stall weeks into plan check. Typical cost: $290,000-$385,000.
Prefab ADU Installation
Prefab systems from Abodu, Cover, Dvele, and Mighty Buildings can cut site time dramatically, but Woodland’s older lots and mid-block access points need a delivery plan before you order panels. We stage everything on-paper first: crane reach, truck turn radius, what happens when the rear alley is too tight for a 40-foot trailer. We’ve done it on West Street. We’ll do it on yours. Typical cost: $265,000-$340,000 including site work and utilities.
Modular ADU
Modular construction works well on Woodland’s east-side tract lots where a 1950s slab and narrow side yard limit conventional framing access. The modules arrive mostly complete; we coordinate the crane, the lift plan, and the utility tie-in. Your neighbors get a written notice before the delivery date. Typical cost: $275,000-$350,000.
Studio ADU
A studio ADU of 700-900 square feet is the most common unit we build in Woodland. It fits a standard 50-by-100 lot with minimal setback variance, and when paired with good HVAC design, it stays comfortable through a 105°F Sacramento Valley July without crushing your tenant’s power bill. Typical cost: $240,000-$300,000.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Woodland
We specify and coordinate prefab and modular systems from Abodu, Cover, Dvele, and Mighty Buildings within our single contract. That means you don’t buy a unit from one company, hire a GC from another, and pray they communicate. We handle the ordering, the delivery sequencing, and the site work. For Woodland homeowners, we stock the common connection hardware and trim components locally so a missing flashing detail doesn’t idle your crew for a week.
Common New Detached ADU Problems We See in Woodland Homes
- Historic-inventory design reviews. Portions of Woodland’s older residential streets near downtown are documented in the city’s historic resources inventory, and a backyard ADU on an affected parcel can trigger a design-compatibility review for materials, roofline, and massing. Contractors who miss this pre-screening get a rejection at plan check and lose weeks redesigning on a tight lot.
- Narrow side-yard access on 1950s tract lots. The east and south sides of Woodland are dominated by slab-on-grade tract homes with side yards too narrow for a crane or a concrete pumper. Without a pre-planned staging map, you pay crane fees and hand-carry delays that quietly eat a five-figure hole in the labor budget.
- Utility trenching close to a neighbor’s foundation. Detached ADUs need their own sewer lateral and water service, and on a tight lot that trench can come within a few feet of the property line. If the excavation hits without written notice to the adjacent owner, you can get a formal complaint under Woodland’s work-hour rules that stalls the whole phase.
- Undersized cooling loads. A detached ADU in Woodland has no shared-wall thermal buffering. In June through September, when highs run past 105°F, an undersized mini-split means a miserably hot unit and a tenant who calls you constantly. We size HVAC to the room-by-room load on a standalone structure, not a rule of thumb.
Pricing for New Detached ADU in Woodland, CA
A new detached ADU in Woodland runs $265,000-$385,000 all-in, drawings through final inspection. Here’s the breakdown:
- Prefab studio ADU (Abodu, Cover, or Mighty Buildings): $265,000-$315,000
- Modular 1-bed or 2-bed ADU: $275,000-$350,000
- Custom site-built ADU (700-1,200 sq ft): $290,000-$385,000
- Site utilities, foundation, and grading (added if not included): $45,000-$85,000
- Historic-inventory design-compatibility review and revisions (when triggered): $6,000-$12,000
Every price includes the permit set, the written scope, and the 365-Day Done Right Promise. The number we quote is the number you pay. No change orders, no door-side upsells, no “discovered conditions” that double the bill at the rough-in stage. That’s Haven Standard Clause 1. Call (971) 497-2402 to schedule your free estimate and get a written price before any work begins.
We Also Serve Cities Near Woodland
While this page focuses on New Detached ADU in Woodland, our crews regularly work in Davis, West Sacramento, Sacramento, and North Highlands. If your property sits near the city line, the same team handles the whole corridor. For details on our broader New Detached ADU service and the municipalities we cover, see the linked pages.
Serving Woodland, CA - Our Local Coverage Area
We’re based in the Woodland 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 - New Detached ADU in Woodland
Yes, it can. Woodland’s historic resources inventory includes many residential streets near downtown, not just individually landmarked buildings. If your parcel is documented in that inventory, the city may require a design-compatibility review for the ADU’s materials, roofline, and massing, even when the existing house was never formally landmarked. The review typically adds two to four weeks to permitting, and it happens before plan check approval, not after. We pre-screen every downtown-area parcel against the inventory during the free estimate so you know before you spend money on drawings whether this applies to your site. Call (971) 497-2402 for a written price and a parcel-specific review.
We stage from the front yard or the driveway apron, and we plan the delivery sequence before the foundation is even formed. On a narrow lot off West Street, our crew staged a Mighty Buildings modular ADU entirely within the front two-thirds of the yard because the rear alley couldn’t accommodate the delivery truck. We used an unused driveway apron that once served a detached garage, notified both adjacent property owners before trenching began, and kept the project on schedule despite a two-week historic design review because we’d already secured the pre-application meeting. If your lot has no side-yard access, the quote includes a staging line item and a written delivery plan, not a vague promise. Call (971) 497-2402 with your parcel number and we’ll tell you what’s feasible.
Legally, notification requirements vary by city and by the depth of the excavation, but as a practice, yes, we always notify the adjacent property owner before trenching comes within a few feet of their foundation. It prevents a formal noise or right-of-entry complaint that can stall the excavation phase under Woodland’s work-hour rules. Our notice includes the trench depth, the timeline, and the contact number for the crew lead on site. It costs nothing and keeps the job moving. Call (971) 497-2402 and we’ll include the party-wall notice in your written scope.
Woodland restricts construction noise to defined daytime hours, typically 7 a.m. to 6 p.m. on weekdays with reduced or no work on Sundays and certain holidays. For an ADU project, that means concrete pours, framing, and utility trenching all need to be sequenced within those windows, and we plan the schedule so the loudest phases don’t land on a weekend. If you live near downtown or in a denser block, we also stage material deliveries to avoid early-morning truck idling. Your written schedule includes the work-hour plan. Call (971) 497-2402 for the full build calendar on your specific site.
Yes, and it changes the math on what you can afford to build. Woodland is the primary bedroom community for UC Davis and the city of Davis, which enforces Measure D slow-growth policies that cap major residential development. Rental demand within a 10-minute commute of campus is chronically unmet, so a Woodland ADU can realistically rent for near-Davis rates while the land beneath it costs significantly less than anything in Davis. A well-built two-bedroom unit can generate $2,400-$2,900 a month in Woodland’s current market, which supports a build cost in the $300,000-$385,000 range on a realistic rental-income basis. That return doesn’t exist for the same project in Sacramento, Dixon, or Vacaville. Call (971) 497-2402 and we’ll run your specific parcel’s rental-income projection alongside the written build price.
Written by Nadia Ellery, Owner at Ellery ADU Studio, serving Woodland since 2015.