A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Lennox, CA
Adding an ADU in Lennox means working with a tight urban lot, an older housing stock, and a coastal climate that rewards smart material choices. Most Lennox homes were built between the 1940s and 1970s, which means framing, foundations, and electrical panels often need attention before a new unit ever goes vertical. Benson ADU Builders approaches every Lennox project the same way: a written price before any work starts, real product options from brands you can research yourself, and a 365-Day Done Right Promise on the finished build. Call (903) 568-7222 when you’re ready to talk numbers.
Why Lennox Homes Are Different
Lennox sits on a flat, dense grid just east of LAX, with lots that run narrow and long. That geometry shapes almost every ADU decision here. Setbacks, the required distance between a structure and the property line, often force a detached unit toward the rear yard, which means planning for equipment access through a side gate that’s usually less than five feet wide. Prefab panel systems like Cover or Dvele become a real advantage on these lots because the panels arrive flat and get assembled in place, avoiding the need for a crane or a wide staging area.
The housing stock is another factor. Many Lennox properties are stucco-over-wood-frame homes built in the 1950s and 60s, and a significant number have had piecemeal additions over the years. Before we quote an ADU or addition, we check how the existing roofline ties in, whether the original slab was ever extended, and whether the panel can carry a second dwelling’s load. These aren’t dealbreakers, but they’re exactly the kind of thing that shows up on a Lennox job and not on a blank suburban lot.
Marine air also matters. Lennox gets the same coastal moisture as nearby beach cities without the sea breeze clearing it out as fast. We recommend cladding and trim that handles damp air without swelling or staining, and James Hardie fiber cement is a common choice on Lennox projects for that reason.
Our Main Lennox Services
Lennox homeowners typically come to us for two reasons: adding a rentable or family ADU in the backyard, or expanding the footprint of the house itself. Each of these has its own dedicated Lennox page, because the pricing, permitting, and site work are different enough to warrant it.
ADU Builders in Lennox
An ADU in Lennox is usually a detached unit at the rear of the lot, and the first conversation is about what the property can actually fit. We work with prefab brands like Abodu and Boxabl, plus site-built options for lots that need a custom footprint. The written quote covers everything: foundation, utility runs, finish work, and permits. Read the full breakdown on our ADU Builders in Lennox page.
Home Addition Contractor in Lennox
A home addition in Lennox expands the existing structure rather than building a separate unit. This often means matching a 60-year-old stucco exterior, tying into the current roofline, and upgrading the panel to handle new square footage. We put the entire scope and price in writing before demo day, and every addition carries the 365-Day Done Right Promise. See what a Lennox-specific addition involves on the Home Addition Contractor in Lennox page.
Room Addition Contractor in Lennox
A room addition in Lennox usually means one of three things: a primary suite off the back, a legal fourth bedroom, or a home office that doesn’t eat the garage. These jobs are smaller than full additions but share the same site realities: tight access, older foundations, and a panel that likely needs a subpanel. We handle the full permit set, and you get a written price before we start. Details are on the Room Addition Contractor in Lennox page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Lennox
We build with Cover, Dvele, Mighty Buildings, and Boxabl in Lennox, among other prefab and materials lines. Each brand has a different panel system, finish package, and lead time, so we walk you through the tradeoffs in plain English before you commit. For a deeper look at what separates these systems, see our brands.
Pricing for ADU Company in Lennox, CA
| Service | Typical range in Lennox |
|---|---|
| Prefab ADU (one-bedroom, 400 – 600 sq ft) | $180,000 – $260,000 |
| Prefab ADU (two-bedroom, 600 – 800 sq ft) | $240,000 – $340,000 |
| Site-built ADU (one-bedroom, 400 – 600 sq ft) | $240,000 – $330,000 |
| Site-built ADU (two-bedroom, 600 – 800 sq ft) | $310,000 – $410,000 |
| Garage conversion ADU | $120,000 – $180,000 |
| Primary suite addition (300 – 400 sq ft) | $130,000 – $190,000 |
| Bedroom addition (150 – 250 sq ft) | $80,000 – $120,000 |
| Home office room addition (120 – 200 sq ft) | $60,000 – $90,000 |
| Full home addition (800 – 1,200 sq ft) | $280,000 – $420,000 |
What moves a Lennox quote higher is usually site access, a panel upgrade, or foundation work on an older slab. The price we put in writing is the price you pay – no change orders hidden in the fine print, no surprise line items after the walls go up.
Neighborhoods We Serve in Lennox
We work across the full Lennox footprint, from the lots along Hawthorne Boulevard to the residential streets north of Imperial Highway and east of the airport flight path. Crews are typically able to be on-site for an initial walkthrough within a few business days of your call.
- Lennox proper, north of Imperial Highway
- The residential grid east of Hawthorne Boulevard
- Streets bordering Eucalyptus Park
- The blocks near Lennox Middle School
- South Lennox, toward the 105
Service Area – Cities Near Lennox
Benson ADU Builders serves Lennox and the surrounding metro. If you’re in Los Angeles, CA, Long Beach, CA, Anaheim, CA, or Riverside, CA, the same written-price guarantee and 365-Day Done Right Promise apply. Scheduling for Lennox is coordinated from our Los Angeles office, with local crews serving Lennox directly.
Serving Lennox, CA - Our Local Coverage Area
We’re based in the Lennox 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 Company in Lennox
After you approve the written quote, the next step is permit submission, which is handled by our team. Site work typically begins once the city issues the permit, and we stay in communication with updates throughout. Call (903) 568-7222 and we’ll give you a realistic timeline for your specific lot.
Some Lennox properties fall under HOA or covenant rules that add a review step, though California state law limits how much an HOA can restrict ADU construction. We check the title work during quoting and flag any extra approval before you sign anything.
Yes. We prepare and submit the full permit set for your Lennox project, including site plans, structural details, and utility drawings. You get a written price that includes the work and the paperwork, and any inspection corrections are handled on our end.
Call (903) 568-7222 to schedule your free estimate. You’ll get a real person on the phone, a written price before any work starts, and a straight answer about what your Lennox property can support.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Lennox Customers Say
"Booked a consult online and met the project manager two days later. Weekly progress updates arrived by text with photos. ADU finished on schedule."
- Hannah W."Clean, quiet crew. They respected the neighbors, kept noise to working hours, and swept the driveway every evening."
- Hope C."Communication was the best part. I always knew what was happening that week without having to ask."
- Dolly N.
