A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable ADU Builders Across Inglewood
Adding an ADU in Inglewood usually costs between $180,000 and $420,000 for a detached unit, with prefab installations landing closer to $180,000 – $280,000 and custom site-built homes running higher. The number moves based on lot coverage limits, utility trenching, and what the city’s plan check actually requires, not on a brochure price. We scope every Inglewood project against the plot plan before we quote anything. That’s the difference between a price that holds and one that changes at the door. Call (903) 568-7222 for a free estimate, and we’ll walk the lot with you.
Key Takeaways
- Detached ADUs in Inglewood typically run $180,000 – $420,000 depending on size, site conditions, and finishes.
- Inglewood’s combined rear-yard coverage limit, not building height, is the real constraint on ADU size.
- Every Benson ADU Builders project starts with a written price before any work begins.
- Our 365-Day Done Right Promise covers every Inglewood build in writing.
Why Benson ADU Builders Is Inglewood’s Preferred ADU Builders Company
We’re led by Troy Eastman, and we operate differently than the contractors Inglewood homeowners tell us about: the ones who hand over a verbal estimate, disappear for weeks, then show up with a change order. Benson ADU Builders puts the plan and the price in writing from the first conversation. You get a written quote, a defined scope, and a project calendar before any money changes hands.
Inglewood homeowners consistently mention the same three things after working with us: the price didn’t move once work started, the crew arrived in uniform and background-checked, and there was a live person on the phone every time they called. That’s not an accident. We’re part of the Relay Home Co. family, established in 2006, and each location operates under The Relay Visibility Guarantee: written pricing, real-time tracking, and a 365-Day Done Right Promise. If something isn’t right within a full year, we make it right. In writing.
We build with brands Inglewood homeowners can research themselves – Abodu, Cover, and Dvele among them – so you’re never stuck with a single take-it-or-leave-it product. Crews are dispatched from the Los Angeles office and serve Inglewood locally.
Detached ADU in Inglewood
A Detached ADU in Inglewood is a separate dwelling unit built in the rear yard of a single-family lot, and on the city’s typical 5,000 – 6,000 sq ft R-1 parcels, the 4-foot rear and side setbacks are usually manageable. The real constraint is Inglewood’s combined rear-yard coverage limit. That’s the total square footage your lot can hold behind the main home, including the ADU, the garage, and any covered patio. It’s why a 1,200 sq ft unit that fits on paper in Hawthorne might not fit on your lot near La Brea Avenue. We pull the plot plan first.
For Inglewood homeowners, this work makes sense when you want rental income, a place for aging parents, or a separate workspace. A typical detached ADU here runs $200,000 – $420,000 site-built, or $180,000 – $280,000 for a prefab unit from a brand like Abodu or Cover. Site work is where the real cost lives: foundation, utility trenching, gas and electrical disconnects and reconnects, and plan check fees.
Site Work and Utility Trenching
Before a single panel or wall section arrives, we’re digging. Inglewood’s ADUs require the same foundation and utility scope as full additions: concrete slab or raised foundation, trenching from the main dwelling to the new unit, and proper disconnects. That’s often $30,000 – $60,000 of the project, and it’s the part brochure pricing skips.
Setbacks and Coverage on R-1 Lots
On a standard 6,000 sq ft lot, the combined rear-yard coverage limit typically caps your ADU smaller than the maximum 1,200 sq ft the state allows. We measure this before quoting. It saves Inglewood homeowners from paying for plans for a unit that can’t be legally placed.
JADU in Inglewood
A JADU in Inglewood is a junior accessory dwelling unit, built within the existing walls of the main home, and it’s capped at 500 sq ft. It’s the fastest, least expensive route to a rental unit here, typically running $60,000 – $130,000 depending on how much interior work the existing layout needs. Inglewood’s code requires a separate entrance and what the city calls an efficiency kitchen, not a full kitchen. That’s a compact cooking space with a small refrigerator and a sink – no four-burner range required.
The catch many Inglewood homeowners hit: you can’t just wall off a bedroom and call it a JADU. The separate entrance is mandatory, and if the main home’s existing kitchen or bathroom was going to be shared, that doesn’t pass plan check. So the interior scope grows: new door opening, a small kitchenette, possibly a compact bathroom. The permit gets pulled, then the change order arrives. We scope JADUs against the actual floor plan before quoting.
Efficiency Kitchen Requirements
Inglewood’s plan check looks for a specific configuration: a sink with running water, a compact refrigerator, and food preparation space. Adding this in an existing bedroom or den usually means relocating plumbing, which is the single biggest JADU cost driver we see on older homes near Crenshaw Boulevard.
Separate Entrance Rules
Every JADU in Inglewood needs its own exterior door. That sounds simple, but on a 1940s stucco home it can mean cutting through an exterior wall, adding a landing, and updating the egress path. We handle it, but it’s not a line item any honest contractor should leave off the first quote.
Trusted Brands We Service in Inglewood
We build with and install prefab and panelized units from Abodu, Cover, and Dvele, plus we use James Hardie cladding on site-built and hybrid projects. For Inglewood customers, that means you’re not waiting on a custom framing crew for every wall. Prefab sections arrive on a truck, get craned into place, and we handle everything before and after: the slab, the trenching, the disconnects, the finish work. Parts and materials for these brands are stocked at our Los Angeles distribution point, so Inglewood projects don’t stall waiting on a backordered panel from out of state.
Common ADU Builders Problems We See in Inglewood Homes
- Brochure pricing that ignores lot coverage. A prefab price quoted without checking Inglewood’s combined rear-yard coverage limit is a guess. We’ve seen homeowners near West Boulevard and 108th Street pay for plans for a unit that couldn’t legally fit where they wanted it.
- Treating prefab delivery as the whole project. The box is the easy part. Foundation, utility trenching, gas and electrical disconnects, and reconnects are what Inglewood’s inspectors actually review. Skipping those in the quote means a five-figure change order after the permit is pulled.
- Assuming a JADU can share the main home’s kitchen. Inglewood requires a separate entrance and an efficiency kitchen. If that’s not scoped before the permit, the interior remodel scope changes after work starts, not before.
- Not pulling the plot plan before quoting. We won’t put a number in writing for any Inglewood ADU until we’ve seen the plot plan and confirmed setbacks and coverage. Any contractor who will is pricing a guess.
Pricing for ADU Builders in Inglewood, CA
A detached ADU in Inglewood runs $180,000 – $420,000, with prefab options from Abodu or Cover typically landing at $180,000 – $280,000. A JADU conversion inside the existing home is $60,000 – $130,000. Site work – foundation, trenching, disconnects – is usually $30,000 – $60,000 of any detached build. What actually moves the price once work starts in Inglewood: unverified lot coverage, utility routing that plan check flags, and interior scope added after the permit. The honest way to price this is a written quote against your plot plan and floor plan, not a brochure. We do that for every Inglewood project, free. Call (903) 568-7222 to schedule your free estimate.
We Also Serve Cities Near Inglewood
Our ADU Builders team works throughout the South Bay and Mid-City, including Hawthorne, Culver City, El Segundo, and Lawndale. If you’re in any of those cities and want the same written-price, 365-day guarantee approach we bring to Inglewood, call (903) 568-7222 and we’ll set up a walkthrough.
Serving Inglewood, CA - Our Local Coverage Area
We’re based in the Inglewood 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 Inglewood
Yes, in most cases you can build a detached ADU on a 5,000 sq ft R-1 lot in Inglewood, but the combined rear-yard coverage limit will likely cap your unit below the state maximum of 1,200 sq ft. On a 5,000 sq ft lot, you’re usually looking at 700 – 900 sq ft of buildable ADU after accounting for the existing garage, covered patio, and the 4-foot rear and side setbacks. The answer depends on what’s already in the rear yard. Call (903) 568-7222 and we’ll pull your plot plan and give you the exact number.
A detached ADU is a separate building in the rear yard with its own kitchen, bathroom, and entrance, while a JADU is built inside the existing home, capped at 500 sq ft, and requires an efficiency kitchen and separate entrance. In Inglewood, a detached ADU runs $180,000 – $420,000; a JADU runs $60,000 – $130,000. The JADU is faster and less expensive but it’s tied to your main home’s plumbing and layout. If you’re weighing both, call (903) 568-7222 and we’ll scope each option against your floor plan.
An Inglewood ADU typically takes 8 – 14 months from the first walkthrough to final inspection, with plan check alone running 6 – 10 weeks and construction taking 5 – 9 months depending on whether you choose prefab or site-built. Prefab units from Abodu or Cover compress the on-site framing phase, but foundation, trenching, and inspections move on the city’s calendar, not ours. We give every Inglewood homeowner a project calendar in writing before work starts. Call (903) 568-7222 for a free estimate and a realistic timeline.
The three things that change price after work starts in Inglewood are lot coverage discovered during plan check, utility routing that the city requires after trenching begins, and interior scope added after the permit is pulled – usually in JADU projects where the efficiency kitchen or separate entrance wasn’t scoped correctly. Our written price includes the site work we can measure from the plot plan: setbacks, coverage, trench path, disconnects. If plan check flags something we couldn’t see, you’ll know before we dig, not after. Call (903) 568-7222 for a quote built on your actual lot.
No, you don’t have to choose a prefab brand, but for Inglewood lots where coverage limits constrain size, prefab units from Abodu, Cover, or Dvele often fit more cleanly than site-built framing because their dimensions are fixed and documented before plan check. We build custom site-built ADUs too, and we’ll quote both so you can compare. The brand you choose matters less than whether the unit fits your lot’s coverage limit. We’ll show you both options in writing. Call (903) 568-7222 for a free estimate.
Our Inglewood Track Record
Our crew built a detached 2-bedroom Abodu unit on a standard 6,000 sq ft R-1 lot near the corner of West Boulevard and 108th Street, where the homeowner had been quoted a fast price by another builder before anyone measured the rear-yard coverage. We pulled the plot plan, confirmed the 4-foot rear and side setbacks against the combined coverage limit, then set a concrete slab and utility trench before the prefab sections arrived. The finished ADU passed its final inspection, but the lesson for the homeowner was that the siting and utility work, not the box itself, drove the schedule. That’s the part of the project we spend the most time getting right in Inglewood.
Built on Inglewood’s Actual Rules
Inglewood’s residential zones are overwhelmingly R-1 and R-2 at 5,000 – 6,000 sq ft lots, and because the city adopted its ADU ordinance ahead of the 2020 state updates, a detached ADU’s rear and side setbacks are commonly 4 feet while the combined rear-yard coverage limit, not building height, becomes the real constraint on how large an ADU the lot can physically hold. That’s why we don’t quote any Inglewood project from a brochure. The plot plan tells the truth. Between La Brea Avenue, Century Boulevard, and the neighborhoods around Inglewood Park Cemetery, the lots are consistent, and so are the coverage math and the plan check questions. We know what the city asks for because we’ve answered it on projects across Inglewood, from Morningside Park to the streets off Prairie Avenue.
For a written price before any work starts, call (903) 568-7222 today. Estimates are free, and we’ll walk your lot with you.
Written by Troy Eastman, Owner at Benson ADU Builders.
