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 Maywood
Adding an ADU in Maywood usually means working within tight dimensions: most lots here sit under 5,000 square feet, the existing home was built before 1960, and the rear yard is already spoken for by a detached garage. That is not a problem if the builder knows how to scope around it. Drafting and permitting an ADU in Maywood typically runs from $8,000 to $18,000, and full construction for a 400 to 600 square foot detached unit generally lands between $180,000 and $260,000 depending on whether you go prefab or site-built. Benson ADU Builders sends a scoped written price before any work starts, so you know the number before you commit. Call (903) 568-7222.
Why Benson ADU Builders Is Maywood’s Preferred ADU Builders Company
Most of our Maywood clients come to us after another contractor quoted a flat square-foot price that fell apart at plan check. The older parcel records matter here. A pre-1960 lot in Maywood often has a garage slab with no documented footing, an unpermitted rear addition from decades ago, or a side-yard setback conflict that only shows up when the city reviews the drawings. Troy Eastman and our team walk the lot first, pull the county assessor records, and check the existing structure before we put a number in writing. It keeps the price honest.
Our ADU Builders team has worked rear-yard and garage-conversion projects throughout the city, from the blocks around Maywood Park to the older single-story pockets off Alamo Avenue. We background-check everyone who steps onto your property, they arrive in uniform, and you get photo updates through the build. A live person answers our phone around the clock, every day of the year. No voicemail loops, no waiting until Monday.
ADU Contractor in Maywood
An ADU Contractor in Maywood is the general contractor who pulls the permit, manages the plan-check process, schedules the inspections, and runs the build from foundation to final walkthrough. You need one because Maywood’s building department, like most Los Angeles County cities, now reviews ADU plans against both the state’s 4-foot rear and side setback standard and the city’s own lot-coverage limits. A contractor who knows how those two rules interact on a 4,800 square foot lot will save you weeks and thousands. Scoping, permitting, and managing a Maywood ADU build as the general contractor typically runs $12,000 to $20,000 of the total project cost, depending on whether you convert a garage or build new.
Detached ADU and Garage Conversion Scoping
Detached ADUs are the most common path in Maywood because most homes already have a separate garage sitting in the rear yard. The question we answer first is whether that existing slab and footing can carry the new loads. In older Maywood rear yards, the slab is often a thin, undocumented pour from decades ago. It fails under the framing load, so it gets removed and replaced, and that changes the price. We catch that at the walkthrough, not at inspection.
Junior ADU and Attached Options
A Junior ADU, or JADU, converts space inside the existing home’s footprint, usually an attached bedroom or a converted porch, into a separate living unit with its own entrance and kitchenette. It costs less because the walls and roof already exist. Maywood lots occasionally suit a JADU when the rear yard is too narrow for a detached unit. Budget $60,000 to $110,000 for a finished JADU here, depending on plumbing and kitchen scope.
ADU Design in Maywood
ADU Design in Maywood means drawing a floor plan that respects the city’s narrow, deep lot reality and still delivers a livable unit. We design most Maywood ADUs as narrow rectangles, 14 to 18 feet wide, pushed against the rear property line within the setback. The design phase here typically costs $4,000 to $9,000 and includes site measurement, plan sets, structural calcs, and the energy compliance documents the city requires. You cannot just take a stock wide-lot plan and drop it onto a 25-foot-wide Maywood parcel. It will not clear the side setbacks.
Prefab and Modular Plan Options
For Maywood lots with a clean rear access path, prefab ADUs from brands like Cover and Dvele offer a faster build and less on-site framing. The module gets set by crane over the existing or new slab, and finishes are already built into the panel system. We have designed and permitted prefab ADUs for Maywood clients where the garage was torn down and the panelized unit set in its place. A 400 to 500 square foot prefab unit in Maywood typically lands between $190,000 and $240,000 installed, including foundation and utility hookups.
Site-Built Custom Design
When the rear yard is tight or oddly shaped, site-built framing gives more control over the footprint. A site-built 500 square foot ADU in Maywood typically runs $200,000 to $260,000. The number one design decision is whether the unit goes where the garage stands, or the garage stays and the ADU squeezes into the remaining yard. We model both options in the design phase so you are pricing a real plan, not a sketch.
Trusted Brands We Service in Maywood
We are authorized to build with and source from Cover, Dvele, and Mighty Buildings, plus Tuff Shed and James Hardie cladding. That gives our Maywood clients real options instead of one take-it-or-leave-it product. A Dvele panel arrives with windows, wiring, and insulation already integrated, which matters on a narrow Maywood rear lot where staging materials is a headache. If a prefab route fits your site, we quote the brand by name in your written price, so you can research it yourself before you sign. We coordinate delivery and crane access for your Maywood street. You get the written price before any work starts, and the 365-Day Done Right Promise covers the finished build.
Common ADU Builders Problems We See in Maywood Homes
- Undocumented garage slabs and footings. A 1940s garage in Maywood often sits on a 3-inch slab with no rebar record. The new ADU framing, roofing, and drywall loads exceed what that slab can carry, so the foundation scope grows and the honest price reflects it before you sign, not after.
- Side-yard setback conflicts on narrow lots. Maywood’s small lots and the 4-foot side setback standard often force the ADU plan into a narrow, deep rectangle. A plan drawn for a wide lot, like the ones common in neighboring Bell Gardens, fails Maywood plan check and resets your timeline.
- Unpermitted prior garage or room additions surfacing at plan check. The city’s older parcel records sometimes do not show a rear addition built decades ago. When plan check discovers it, the scope changes because the unpermitted work must be resolved or absorbed into the new plans.
- Rear access for prefab delivery and first-floor framing. Some Maywood streets have narrow rear alleys or overhead utility lines that restrict a crane set. We check the access path during the walkthrough so a prefab module does not arrive on a truck that cannot reach your yard.
Pricing for ADU Builders in Maywood, CA
For a detached ADU in Maywood, expect $190,000 to $260,000 for a 400 to 600 square foot unit, including foundation, framing, roofing, electrical, plumbing, drywall, paint, and final inspection. A garage conversion with an existing solid slab runs $130,000 to $180,000. A Junior ADU runs $60,000 to $110,000. Design and permitting on top of construction runs $8,000 to $18,000. The biggest cost driver is the existing slab and footing, because Maywood’s older rear yards rarely have a documented foundation that passes current load requirements. The second driver is the lot width: narrow lots force custom narrow plans instead of stock prefab modules. We give you a written line-item price before work starts, including the brand name if you choose prefab. Call (903) 568-7222 for a free estimate.
We Also Serve Cities Near Maywood
Our crews serve Maywood and the nearby communities of Bell, Huntington Park, Bell Gardens, and South Gate. The same written-price rule applies everywhere we work. If you are adding an ADU in Maywood or across the city line, call (903) 568-7222 and we will walk the lot and scope the job the same way: in writing, with the permit sequence laid out.
Serving Maywood, CA - Our Local Coverage Area
We’re based in the Maywood 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 Maywood
Usually yes, because Maywood’s city rules track the state’s 4-foot rear and side setback standard, which leaves a buildable strip on most lots under 5,000 square feet. The realistic route on a fully built-out lot is either a garage conversion on the existing footprint or a narrow detached unit squeezed behind the garage. We scope both options at the walkthrough and price them in writing, so you can compare the real numbers. Call (903) 568-7222 for a free lot assessment.
You submit architectural plans, structural calculations, energy compliance documents, and a site plan showing the setbacks and lot coverage to the city’s building department, then you respond to plan-check comments and revise until the permit is issued. In Maywood, the older parcel records and unpermitted prior work are what usually generate comments. Our team handles the full submittal and revision cycle, and we include the permit fees in your written price. Call (903) 568-7222 and we will walk you through the exact sequence for your lot.
Yes, and for many Maywood lots a garage conversion is the fastest and most affordable ADU path because the footprint already exists and the rear yard stays open. The variables are the slab and footing condition, the existing wall framing, and whether the garage is too close to the rear property line. We inspect the structure first and tell you honestly whether conversion or tear-down-and-rebuild makes more sense. A Maywood garage conversion typically runs $130,000 to $180,000, and the written price includes the structural upgrades.
A site-built detached ADU in Maywood typically takes 7 to 10 months from first walkthrough to final inspection, while a prefab unit from Cover or Dvele can finish in 4 to 6 months because the module is built off-site in parallel with your foundation work. Plan check at the city usually runs 6 to 10 weeks depending on resubmittal rounds. We give you a written schedule with your price, and the live tracker shows progress as it happens. Call (903) 568-7222 to get a realistic timeline for your specific lot.
The two changes we see most often in Maywood are a failed garage slab that must be replaced and an unpermitted prior addition discovered at plan check that must be resolved before framing. Both are knowable before work starts if the walkthrough is thorough. We put the scope in writing and flag known risk items upfront, and we do not bill change orders for conditions we should have caught. If something genuine comes up mid-build, you get the number in writing before the work proceeds. Call (903) 568-7222 for a free estimate, and we will tell you what is actually on your lot before you sign.
Written by Troy Eastman, Owner at Benson ADU Builders, serving Maywood homeowners with written-price ADU construction.
