Expert General Contractor in Whittier – HomeSense Construction & Remodeling

Last updated: September 2026

What we actually see on Whittier job sites

Whittier issues its own building permits. Plan check and inspections run through the City's Building and Safety Division at 13230 Penn Street, with applications and inspection scheduling handled through the City's online permit portal, and nothing goes to LADBS. Fire is the split most people get wrong: the Whittier Fire Department was disbanded in July 1975 and fire protection and emergency medical service have been provided by the Los Angeles County Fire Department ever since. So the building permit is a City matter while fire plan review, fuel modification and brush clearance are County matters — two agencies, two calendars, and a project in the hills that needs both should start the County track first, because it is the slower of the two.

There is a third counter that surprises homeowners: Public Works. Anything in the public right-of-way — a new driveway approach, a sewer lateral connection, a curb cut for an ADU, a sidewalk repair after a foundation pour — is a separate Public Works permit, not part of the building permit, and the City's Public Works customer service division also handles the water utility side. Because service boundaries around Whittier are a patchwork of the City utility and private systems, we confirm the actual water purveyor for the address before requesting a fire-flow letter or a meter upsize. On more than one project the fire-flow test was ordered from the wrong agency and cost several weeks.

Whittier's housing stock is genuinely old for Southern California, and that changes the work. College Hills, Hadley and the streets around Uptown are full of pre-1940 Craftsman and Spanish Colonial bungalows: original narrow-dimension framing, no engineered shear walls, knob-and-tube remnants, unbraced cripple walls at the crawlspace, and cast-iron drains that have outlived their design life. The 1 October 1987 Whittier Narrows earthquake was centred here and hit Uptown's masonry buildings hard, which is why so much of the commercial core carries retrofit history. On a residential remodel the practical consequence is that a foundation bolting and cripple-wall bracing package is often the highest-value line item in the whole budget, and it is cheapest when the walls are already open for other reasons.

Above the flats, the Whittier Hills are a different construction problem. Parcels in the mapped fire hazard severity zones are subject to the CWUIC — materials and construction methods for exterior wildfire exposure — which in practice means a Class A roof assembly, ember-resistant attic and foundation vents, enclosed eaves, and exterior wall and deck materials chosen for ignition resistance rather than appearance. Those same hillside lots sit in the Puente Hills fault and landslide belt, so a geotechnical report drives the foundation, the retaining walls and the drainage design. If you are reroofing a hillside Whittier house, the reroof is the moment to bring the vents and the eaves up to standard, because the scaffolding is already paid for.

HomeSense services for Whittier homeowners

• ADU design and construction
• Home additions and expansions
• New construction
• Custom home building
• Roofing and cool roof installation
• Bathroom remodeling
• Whole-home remodeling
• Remodeling cost guides
• Full service area map
• Frequently asked questions

2026 code note. The wildfire construction rules described above changed on 1 January 2026. The California Building Standards Commission deleted Chapter 7A from the California Building Code and consolidated it — together with Residential Code Section R337 and Fire Code Chapter 49 — into the 2025 California Wildland-Urban Interface Code (CWUIC), Title 24 Part 7, which took effect the same day. A 2026 plan set that still cites “Chapter 7A” is citing a chapter that no longer exists. One threshold catches most homeowners by surprise: replacing 50 percent or more of a roof covering within 12 months triggers the full Class A new-construction standard rather than a like-for-like repair. Full detail is in our Los Angeles wildfire home hardening guide. Last reviewed September 2026.

Sources & official references

• City of Whittier — Building and Safety — the permitting authority for 90601–90606. Permits are required to build, enlarge, alter, repair, move or demolish any building, and for most plumbing and electrical work.
• City of Whittier — Plan Check, Permits and Inspections — submittal requirements, plan-check process and inspection scheduling for residential projects.
• City of Whittier — Public Works permits — the separate counter for right-of-way work: driveway approaches, curb cuts, sewer laterals and sidewalk restoration. Not covered by the building permit.
• Los Angeles County Fire Department — Fire Prevention — the fire authority for Whittier since July 1975. Fire plan review, fuel modification and brush clearance requirements are issued here, not by the City.
• CAL FIRE Office of the State Fire Marshal — Fire Hazard Severity Zones — the official maps. Check the parcel before design: a mapped zone in the Whittier Hills triggers CWUIC wildfire-exposure construction.
• California Geological Survey — earthquake fault, liquefaction and landslide zones of required investigation, including the Puente Hills system beneath the Whittier Hills.
• Contractors State License Board (CSLB) — verify any contractor's licence and bond before signing. HomeSense Construction & Remodeling holds CA Licence #1125001. CSLB also caps a residential down payment at 10% of the contract or $1,000, whichever is less.
• California Building Standards Commission — Title 24 — the California Residential, Plumbing and Electrical Code editions Whittier enforces, including the CWUIC and locally adopted amendments.
• California Energy Commission — Title 24 Part 6 — energy standards and the alteration pathway that governs envelope, insulation and water-heating upgrades in a pre-1940 Whittier bungalow.
• CALGreen — Title 24 Part 11 — construction and demolition waste diversion, water-efficient fixtures and EV-ready requirements for additions and new construction.
• US EPA — Lead Renovation, Repair and Painting (RRP) Rule — certified-firm containment for pre-1978 housing. Whittier's pre-1940 stock makes this a standing requirement rather than an exception.
• South Coast AQMD — Rule 1403 asbestos notification — required before demolition and before renovation that disturbs asbestos-containing material. Web submission only since 1 November 2016.
• California ADU statute — Gov. Code 66310 et seq. — the statewide ADU and JADU floor, including the 2026 changes under SB 1211 and AB 2533, that Whittier's local ADU ordinance cannot fall below.
• Southern California Edison — the electric utility for Whittier. Panel and service upgrades, including the 200-amp service most whole-home remodels here require, are scheduled through SCE.