Fast, Reliable New Detached ADU Across Inglewood
A new detached ADU in Inglewood typically runs $285,000-$485,000 all-in for a custom build, with prefab and modular options starting closer to $195,000-$340,000 depending on size and specification level. Every project ships with a written price before any work starts, per Haven Standard Clause 1. Call (424) 551-7706 to schedule your free estimate.
We serve Inglewood from our Los Angeles office, and our crews know the local conditions that actually drive cost and schedule here: the LAX noise contours, the post-WWII housing stock, the rear service alleys that change where you can build. We’ve designed, permitted, and built ADUs in Inglewood since before SoFi Stadium broke ground. We know what Inglewood Building & Safety expects on a structural plan review, and we know where the permit process has slowed since the ADU volume surged.
Why Ellery ADU Studio Los Angeles Is Inglewood’s Preferred New Detached ADU Company
Nadia Ellery founded Ellery ADU Studio in 2015, the same year California’s ADU laws shifted. We’ve since completed 900+ ADUs across Los Angeles County, with a significant cluster in Inglewood’s post-WWII neighborhoods. Our clients here receive a documented photo record on every site visit, a written scope locked at signing under Haven Standard Clause 5, and the 365-Day Done Right Promise in writing before the first shovel hits dirt.
Dispatch and scheduling are coordinated from our Los Angeles office, but crews serve Inglewood locally. We’ve worked on alley-accessed lots near West 64th Street, on compact bungalows in Morningside Park, and on stucco boxes in the Century Heights area. The local knowledge matters because Inglewood’s Building & Safety department has been backlogged since the SoFi-era ADU boom began, and a studio that doesn’t know the current review timeline wastes months.
A live person answers our phones 24/7. No voicemail queue. No callback that doesn’t materialize.
Our New Detached ADU Services in Inglewood
Custom Built ADU
Custom builds are our core work in Inglewood, and they’re where lead time, not labour, sets the calendar. A 600 sq ft custom studio with rift-oak millwork, architectural glass, and specialty finishes typically runs $285,000-$395,000 all-in. The STC-rated glazing required under the LAX 65 dB CNEL contour is a long-lead custom order, usually 10-14 weeks from specification to delivery. We order that glass before the concrete pour, with the written price locked ahead of release, so the shell doesn’t sit waiting.
Prefab ADU Installation
Prefab systems from Abodu and Cover can compress the field schedule significantly, but the same Inglewood constraints apply. The unit still needs foundation, utility tie-ins, and the STC package if it’s within the noise contour. A 450-550 sq ft prefab studio in Inglewood typically runs $195,000-$285,000 installed, with the same written-price guarantee. We coordinate the prefab delivery within our single contract, so there’s no gap between the system supplier and the site crew.
Modular ADU
Modular construction from Dvele or Mighty Buildings works well on Inglewood’s compact lots where site access is tight. The modules arrive crane-set, which means we need to confirm alley width or driveway geometry early. Modular ADUs in Inglewood typically start around $240,000 for a 550 sq ft 1-bedroom and scale to $340,000+ for a 2-bedroom with upgraded finishes. The permit set accounts for modular-specific structural connections that Inglewood’s plan checkers now scrutinize closely.
Studio ADU
The studio is the most common detached ADU we design in Inglewood, sized to the lot and the event-economy rental math. A 400-600 sq ft studio on an alley-accessed lot near Hollywood Park can command nightly rates that change the financing conversation entirely. Our studio ADUs run $225,000-$340,000 depending on specification level, with the STC glass and custom millwork as the variable line items. We size the mechanical system for the heat load those west-facing windows create on Century Boulevard corridor properties.
1-Bed & 2-Bed ADU
Detached 1-bedroom and 2-bedroom ADUs in Inglewood require careful siting on 5,000-7,500 sq ft lots. The rear service alleys common in Inglewood’s older plats often let us site at the rear property line, gaining usable floor area that front-setback math would eat. A 1-bedroom typically runs $265,000-$385,000; a 2-bedroom with full kitchen and laundry runs $340,000-$485,000. Both include the electrical service upgrade from 100-amp original panels and the drain line replacement that Inglewood’s inspectors now flag on virtually every pre-1970 home.
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 Inglewood
We specify and coordinate prefab and modular systems from Abodu, Cover, and Dvele within the same single contract that covers design, permitting, and construction. Our Inglewood clients don’t manage separate vendor relationships. We source the STC-rated glazing through our trade partners, not as a homeowner add-on, and we verify the acoustic rating against the specific CNEL contour for your parcel before ordering. The brands are tools; the fixed written price and single point of accountability are the product.
Common New Detached ADU Problems We See in Inglewood Homes
- Ordering stock glazing before confirming the LAX noise-contour STC requirement. Inglewood’s location under the 65 dB CNEL corridor means habitable space needs STC-rated windows and enhanced wall assemblies. Stock vinyl windows don’t pass plan check. We confirm the contour, specify the glass, and order long-lead before the foundation sets.
- Missing the rear service alley on older platted blocks. Many Inglewood lots off Crenshaw Boulevard and Prairie Avenue have alley access that permits rear-property-line siting. Assuming standard front setbacks can cost you 150+ sq ft of buildable footprint. We check the plat first.
- Letting designer selections slip past the pre-order cutoff. Custom millwork and specialty finishes have 8-12 week lead times. If the architect’s shop drawings aren’t approved before we lock the written price, the schedule extends or the specification downgrades. We set a hard cutoff and hold to it.
- Discovering the 100-amp Zinsco panel and galvanized drains after framing starts. Inglewood’s post-WWII housing stock almost universally needs electrical and plumbing upgrades before the ADU permit closes. We inspect and price these during the pre-application phase, not as a mid-project surprise.
Pricing for New Detached ADU in Inglewood, CA
A new detached ADU in Inglewood carries specific cost drivers you won’t find in neighboring cities. The STC-rated glazing package adds $18,000-$32,000 versus standard windows. Electrical service upgrades from 100-amp panels run $8,500-$15,000. Original galvanized drain line replacement adds $6,000-$12,000. These aren’t upsells; they’re code-required conditions on most Inglewood homes built 1940-1970.
All-in pricing ranges:
- Studio ADU (custom): $225,000-$340,000
- 1-bedroom ADU (custom): $265,000-$385,000
- 2-bedroom ADU (custom): $340,000-$485,000
- Prefab studio (Abodu/Cover): $195,000-$285,000
- Modular 1-bedroom (Dvele/Mighty Buildings): $240,000-$340,000
Every range is a written price before any work starts, per Haven Standard Clause 1. No change orders. No scope creep. Call (424) 551-7706 for your free estimate.
We Also Serve Cities Near Inglewood
Our crews work throughout the metro core, including Inglewood and nearby Hawthorne, Culver City, Los Angeles, and Venice. The LAX noise contour, alley-lot plats, and post-WWII housing conditions we manage in Inglewood also appear in varying degrees across these neighboring cities. Our New Detached ADU team applies the same single-contract, written-price model everywhere we build.
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 - New Detached ADU in Inglewood
Because Inglewood sits under the LAX 65 dB CNEL noise contour, a detached ADU permitted as habitable space here needs STC-rated glazing and upgraded wall assemblies that neighboring Hawthorne or Gardena do not typically require. That glass package is usually a long-lead custom order, not a stock item, and we order it before the concrete pour to protect the schedule. Call (424) 551-7706 for an exact quote on your parcel - estimates are free.
Yes. Many Inglewood residential blocks, particularly those platted in the 1940s and 1950s near Morningside Park and the Century Heights area, include rear service alleys that allow a new detached ADU at the rear property line without triggering standard front-setback calculations. This can add 150+ sq ft of buildable footprint on a compact 5,000 sq ft lot. We verify the plat and the alley width during our initial site survey. Call (424) 551-7706 to schedule yours.
Inglewood’s Building & Safety department has seen ADU permit volume surge since SoFi Stadium opened, and structural plan review timelines have stretched well beyond the state-mandated 60-day window for ministerial approvals. We mitigate this by filing a complete permit set the first time and attending pre-application meetings to surface objections early. Most of our Inglewood ADUs clear plan check in 75-110 days. Call (424) 551-7706 for a timeline estimate on your specific project.
The two most common upgrades are the electrical service and the drain lines. Inglewood’s post-WWII bungalows and stucco boxes almost universally have 100-amp panels, often Zinsco or Federal Pacific brands that inspectors now flag, plus original cast-iron or galvanized drain lines that fail hydrostatic testing. We inspect both during pre-application and include the upgrade pricing in the written scope. Call (424) 551-7706 for a free assessment of your existing systems.
The custom materials drive the calendar. STC-rated glass from the LAX noise-contour requirement is 10-14 weeks. Rift-oak millwork built to architect’s shop drawings is 8-12 weeks. Specialty finishes and architectural hardware are 6-10 weeks. Labour installs in predictable phases; the materials have to be on-site first. We lock the written price before ordering, then sequence procurement so the shell doesn’t wait on the interiors. Call (424) 551-7706 to review the procurement schedule for your project.
Written by Nadia Ellery, Owner at Ellery ADU Studio, serving Inglewood since 2015.