
Luxury Remodeling in Downey
Design-build pools, outdoor living and ADUs for Downey homeowners, planned around the city's R-1 and ADU standards.
Building in Downey
Backyard builds, pools and ADUs on Downey's flat R-1 lots.
Downey grew out of Rancho Santa Gertrudes, the land between the Rio Hondo and the San Gabriel River that former governor John Gately Downey began dividing into small farms in 1865. Citrus farming carried the area for almost ninety years before the Second World War brought aviation, and the plant that closed here in 1999 had been the birthplace of the systems for the Apollo program. When Downey incorporated in December 1956, the city's own history records, it already held some of the finest new homes in southeastern Los Angeles County. The ground beneath those homes is predominantly flat, so the questions that shape a backyard here are rarely about slope: they are about where pool equipment may legally sit, how a pool house carries the architecture of the main house, and how much floor area the zoning leaves to add.
Predominantly flat single-family lots zoned R-1, in sub-zones whose minimum lot sizes run from 5,000 to 10,000 square feet with minimum widths of 50 to 70 feet. The floor area ratio tops out at 0.45, or 0.50 with the city's renewable energy bonus, and lot coverage at 45 percent, so the size of an addition is weighed against those limits from the start. A pool house or other accessory building may rise no higher than 12 feet and, garages and patio covers aside, is limited to 700 square feet in one open room without a kitchen or bedroom, designed to match the style, form, color and materials of the house.
One team designs, permits and builds every project, and our own crews self-perform the work, so the people who plan your Downey project are the people on site building it.
Part of our service area in Los Angeles County.
Local Conditions
What building in Downey involves
Permits in Downey
City of Downey Community Development Department, Building and Safety Division
Residential permits, pools included, are issued by the Building and Safety Division of the Community Development Department, on the first floor of Downey City Hall. The division routes plans to each involved city department for concurrent review, and inspections are scheduled through the Accela Citizen Access portal. The zoning code keeps pool equipment, like other mechanical equipment, out of street setbacks and at least four feet from interior property lines, and requires it to be screened from neighboring properties and public streets and placed so noise and vibration do not carry to abutting lots. Detached ADUs beside a single-family home are generally limited to 16 feet in height with four-foot side and rear setbacks, under standards the city adopted in April 2025 and amended in June 2026.
Permit details checked September 2026 against Downey Municipal Code. Rules change, so we confirm them again for your parcel.
What we plan for here
- Pool equipment setbacks and screening
- Pool houses matched to the main house
- ADU design and setback compliance
- Geotechnical planning for liquefaction zones
- Work kept to 7 a.m. to 7 p.m., Monday through Saturday
Since the Army Corps of Engineers finished raising the channel levees in 2000, FEMA has placed no Downey property in a 100-year flood zone, and current flood maps show most of the city as Zone X, an area with reduced flood risk due to levee.
State seismic hazard maps place the entire city in a liquefaction zone, a condition tied to the area's silty, sandy soils and relatively high water table, and the city requires geotechnical reports for construction projects to identify and mitigate that risk.
The city is predominantly flat, with no identified landslide areas, and a permit is required for grading that exceeds 50 cubic yards or affects the drainage of the site, a threshold that matters when pool excavation spoils are spread on site rather than hauled away.
Downey sits in California Energy Code climate zone 8, with zone 9 north of Vista Del Rio, and energy calculations are typically required once a project adds or modifies lighting, mechanical systems or the building envelope.
CAL FIRE's fire hazard severity zone map of March 2025 classifies Downey as non-wildland, with no hazard zone assigned anywhere in the city.
Neighborhoods we work in
- Downtown Downey
- Gallatin
Downey Services
Everything we build in Downey
Each page covers permits, costs and the build process for that work in Downey.

Pool & Spa Remodeling in Downey
We design and build pools and spas with our own crews, start to finish.

Backyard & Outdoor Living in Downey
Outdoor living, hardscape, and curb appeal, designed and built to outlast the SoCal sun.

ADUs & Additions in Downey
We design, permit, and build ADUs and additions that actually add value.
Also available in Downey
Downey Guides
Remodeling guides for Downey
Local planning notes, costs and design direction for Downey homeowners.
Whole-Home Remodel Sequencing: What to Do First
A whole-home remodel done in the wrong order costs 15 to 25 percent more. Here is the correct sequence, from structural and roof through to paint, and why each stage has to precede the next.
Read guideIndoor-Outdoor Living Conversions in Southern California
A 16-foot multi-slide door runs $18,000 to $45,000 installed. Here is how the full indoor-outdoor conversion works, from structural header to flush threshold to covered patio tie-in.
Read guideTarzana Outdoor Living: A Builder's Guide to South of the Boulevard Lots
Tarzana backyards run hot and deep. A working outdoor living build here (shade, hardscape, kitchen, lighting) typically lands between $85,000 and $220,000, and the ground drives most of the number.
Read guidePorter Ranch Backyard Transformation: Wind, Slope and What It Costs
A full backyard transformation in Porter Ranch runs $95,000 to $280,000. Wind exposure, slope, HOA review and fire-zone material rules shape the design before anything about style enters the conversation.
Read guideNearby service areas
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