General Contractor in Gardena, CA
A general contractor in Gardena files plans by email as PDFs with Building and Safety, follows the 2025 state codes on every application since January 1, 2026, and plans around a 50 percent front yard hardscape cap, a two-car garage trigger for larger additions and a new ADU chapter. MDG Builders, CSLB #1040337, manages eleven trades here.
Eleven Gardena trade guides, from reroofs to ADUs
Each guide below takes one trade through Gardena's Municipal Code, its permit handouts and its mid-century housing, with the sources linked. Open the one that matches your job.

Kitchen Remodeling in Gardena
A City handout that lists permit triggers, a whole-house fixture upgrade, 1960s wiring surprises and rentals where the owner holds the permit.
See Gardena kitchen remodeling →
Bathroom Remodeling in Gardena
Permit handout, shower and toilet clearances, 1950s tract homes, rentals and Saturday hours for Gardena bathrooms.
See Gardena bathroom remodeling →
ADU Construction in Gardena
New ADU chapter, City preapproved plans, garage conversions, soils strip and 60 day review for Gardena backyards.
See Gardena ADU construction →
Room Additions in Gardena
Two-car garage trigger, R-1 setbacks, soils reports, plan check lists and the southern liquefaction strip for Gardena additions.
See Gardena room additions →
Roofing in Gardena
A reroof permit at the Building counter, a Class B covering minimum, two answers on permit validity and 1950s and 1960s tract roofs with no mapped fire zone.
See Gardena roofing →
Windows in Gardena
Counter permit with no energy form, retrofit inspections, bedroom escape windows and safety glass for Gardena homes.
See Gardena window replacement →
Flooring in Gardena
A floor-only swap needs no permit, asbestos notice starts at 100 square feet, 1950s and 1960s subfloors, and half of Gardena households rent.
See Gardena flooring →
Painting in Gardena
No building permit for paint, lead-safe rules for older tract homes, stucco prep, rental turnover repaints and no color review for ordinary houses.
See Gardena painting →
Concrete in Gardena
The 50 percent front yard hardscape cap, street encroachment fees, retaining wall permit conflict, soils and a 20 by 20 garage slab.
See Gardena concrete work →
Decks in Gardena
No City deck permit threshold, 4 foot and 2 foot 6 inch yard projections, pool setbacks, rental balcony repairs, guards and costs.
See Gardena deck building →
Fencing in Gardena
A 6 foot permit line under an 8 foot zoning limit, 3.5 feet in the front setback, block wall sheets that disagree and shared-line paperwork.
See Gardena fencing →What sets a Gardena building job apart from one in a neighboring city?
Gardena's building stock follows its history closely. The valley began as part of the Rancho San Pedro grant of 1784, General Rosecrans bought 16,000 acres in 1869, and developers platted Gardena proper in 1887. After the Los Angeles and Redondo Railway arrived in April 1890 the area became Berryland, with strawberry and vegetable fields worked largely by Japanese American farmers. The City incorporated on September 11, 1930 by joining Gardena, Moneta and Strawberry Park, and according to Wikipedia card rooms made it the county's only legal gambling town from 1936 to 1980, while population rose from 5,909 in 1940 to 41,021 in 1970 as farmland became subdivisions. The Census Bureau's 2024 five year tables count 21,837 housing units: about 45 percent were built in the 1950s and 1960s, 71.5 percent before 1980, and the median year built is 1964. Only 43.8 percent are detached single-family houses, 28.4 percent sit in buildings of five or more units, 5.7 percent are mobile homes and renters hold 51.2 percent of households. A kitchen remodel therefore tends to meet original wiring and pipe, a bathroom remodel permit brings California Civil Code 1101.4 fixture upgrades for the whole house, and flooring work in an older building can disturb asbestos, which Municipal Code Chapter 15.32 covers at 100 square feet or more (owner-occupants of single-unit homes are exempt).
The route to a permit runs through email. The Building and Safety Division at City Hall takes applications as PDFs sent to building@cityofgardena.org under its Electronic Plan Review procedure: staff work out the plan review fee, notify you through Microsoft Teams, you pay by card, and only then does review begin. Unless a special zoning approval is needed, the City quotes about 10 business days for a first check and 5 for each resubmittal. Walk-ins and appointments at the counter are limited to reroof, service panel, sewer, water heater, forced air unit, new HVAC, block wall and window permits. The pages we read do not print counter hours, so call (310) 217-9672 before you drive over. Every application filed on or after January 1, 2026 follows the 2025 California codes, which the City re-adopted by Ordinance 1888 on March 10, 2026. Two sets of numbers disagree. The permit page says a permit lasts 180 days unless work is progressing, while Municipal Code 15.06.030 says 12 months, so ask which clock applies to you. The code notice designs for Seismic Design Category D and a 100 mph wind, the block wall sheet lists Category E and 110 mph, and your engineer should confirm the values. Under the fee schedule effective July 1, 2026, a permit issuance fee is $72, plan review equals 100 percent of the permit fee, and starting work before the permit quadruples the fees. Contractors and subcontractors alike need a Gardena business license.
A handful of local rules decide what an owner can do. A fence up to 6 feet needs no building permit, yet zoning lets side and rear fences reach 8 feet and holds a fence in the front setback to 3.5 feet, so the fence guide sorts out which height needs paperwork. A retaining wall is exempt only up to 3 feet from footing to top, but the City's older block wall sheet says every retaining wall shall be engineered, so the code and the sheet pull in different directions and the counter should settle it before a footing is dug. In the R-1 zone no more than half of a front yard may be hardscape, which limits a wider driveway or a concrete apron. An addition of 20 percent of the existing floor area or 300 square feet, whichever is less, triggers the two-car garage rule, and the room addition guide walks through it. The ADU chapter was rewritten by Ordinance 1893 on September 8, 2026, and the City also runs a preapproved plan program, both covered on the ADU page. For roofing, the amended tables read as a Class B minimum, a reading the City should confirm. A window replacement can go through the counter, and the City says the CF1R energy form is not needed when you only replace windows. Repainting and floor covering with no other work are treated as maintenance, so painting mostly comes down to an HOA check. The pages we read give no deck height threshold, so ask before framing a deck.
Ground and weather come last, and they are narrower than they sound. Hazard figures here come from points sampled on County copies of State maps, not from parcel lookups. Of 2,283 sample points, 1 touched the Alquist-Priolo fault zone near El Segundo Boulevard and Vermont Avenue, 92 (4.0 percent) fell in a liquefaction strip along Artesia Boulevard and the Dominguez Channel, none landed in the 100-year flood layer and 5 landed in the 500-year layer. Gardena sits outside every mapped fire hazard severity zone. The nearest weather record is Los Angeles International Airport, 5.6 miles away: 12.23 inches of rain a year, 80 percent of it from December through March, and 4.8 days at 90 degrees F or above. Construction noise is exempt only from 7 a.m. to 6 p.m. on weekdays and 9 a.m. to 6 p.m. on Saturdays. At resale the City's Truth in Sales report lists permit and zoning findings, so an unpermitted remodel can surface then. MDG Builders is the general contractor of record under CSLB #1040337: we write the scope, file the plans, schedule licensed specialty subcontractors and walk the finished work with you, as our subcontractor guide lays out. Neighboring hubs exist for Hawthorne, Torrance, Carson, Compton and Inglewood.

- Ordinance 1888 re-adopted Gardena's building codes for the 2025 state codes on March 10, 2026.
- No more than 50 percent of an R-1 front yard in Gardena may be paved or covered with hardscape.
- A Gardena addition of 20 percent or 300 square feet, whichever is less, triggers a two-car garage.
- About 45 percent of Gardena's housing went up in the 1950s and 1960s, and the median year built is 1964.
- Renters hold 51.2 percent of Gardena's occupied households, so landlord approval often comes into play.
- Ordinance 1893, dated September 8, 2026, rewrote the City's ADU chapter.
Gardena questions we hear before the first walkthrough
Does my contractor need a Gardena business license?
Yes, even a contractor based in another city needs one. The City's business license page lists a $150 business tax plus a $4 state fee for A and B contractors, and $75 plus the same $4 for C and D specialty contractors, with the tax prorated at half from July 1 to November 30.
How do I submit permit plans to Gardena?
You email a completed permit application and PDF plans to building@cityofgardena.org. The City works out the plan review fee, tells you through Microsoft Teams, and starts review after you pay by card. If no Teams notice arrives within 48 hours, call (310) 217-9672, and not before that.
How long does a Gardena permit stay valid?
It depends on which City document you read. The permit page says 180 days unless work is active and progressing, while Municipal Code 15.06.030 says a permit lapses after 12 months without a start or after a 12 month stoppage, with written extensions of up to 180 days. Ask Building and Safety before you plan around either.
Do I need a permit for a fence or a retaining wall in Gardena?
A fence up to 6 feet is exempt, and a retaining wall is exempt only up to 3 feet from footing to top. Zoning allows fences to 8 feet at the sides and rear, so taller ones need a permit. The City's block wall sheet says retaining walls shall be engineered, so confirm with the counter.
How much of my Gardena front yard can be concrete?
No more than 50 percent of an R-1 front yard, driveway included, may be hardscape, and the rest must be landscaped with permanent irrigation the City approves. A lot with under 100 feet of street frontage may have only one driveway. Plan a wider driveway or a patio apron against that cap first.
Can I build an ADU in Gardena in 2026?
Yes. Chapter 18.13 of the Municipal Code, rewritten by Ordinance 1893 on September 8, 2026, allows ADUs and JADUs on residential lots with a house. The City tells you within 15 business days if your application is complete and decides within 60 days after that, or 30 days with a preapproved plan.
Does a Gardena room addition need a two-car garage?
It does when the addition is 20 percent of the existing floor area or 300 square feet, whichever is less. Chapter 18.40 then requires a fully enclosed garage at least 20 by 20 feet inside. The Community Development Director may waive it or accept a one-car garage when two cars physically cannot fit.
Is Gardena in a fire, flood or fault zone?
Not for fire, and only at the edges for the rest. The City's Public Safety Plan says Gardena has no wildland fire exposure. A liquefaction strip runs along Artesia Boulevard, and an earthquake fault zone touches the city near El Segundo Boulevard and Vermont Avenue. A soils report is the only way to know a given lot.
Share your Gardena job with us
Tell us the street address, the year the house was built and what you want changed. We check the zone, front yard coverage and garage rules first, then tell you which Building and Safety steps your Gardena scope is likely to meet.