County, Septic, Slope and Fire
Wastewater systems influence where a structure can sit, and geology reports are normal for slope work. Access is a real cost item: narrow canyon roads limit truck size and force staged deliveries and sometimes pumped concrete. Fire hardening and defensible space apply to every exterior assembly.
- /Los Angeles County permits with fire department review
- /Onsite septic systems that constrain siting and layout
- /Geology and slope stability reports for hillside work
- /Narrow canyon access with staged deliveries and pumped concrete
- /Fire-hardened exteriors and defensible space requirements
What We Build in Topanga
Most of our Topanga projects fall into a handful of categories. Whichever one you're planning, you get a fixed-price proposal with real specifications instead of a vague per-square-foot guess.
- Kitchen remodels, from same-footprint refreshes to full layout changes
- Bathroom remodels with waterproofing done by our own crews
- Detached ADUs, attached ADUs and garage conversions
- Room additions and second-story additions
- Structural work: foundations, framing, seismic retrofits and wall removals
- Complete home remodels and ground-up custom homes
Working With Canyon homes on steep, fire-zone parcels
Topanga is largely made up of canyon homes on steep, fire-zone parcels. Older houses here often need attention behind the walls before anything cosmetic makes sense, which is why we open things up early and price the real conditions instead of writing change orders later.
- Original wiring and undersized electrical panels
- Galvanized or cast-iron plumbing that needs replacing
- Framing that was never bolted to the foundation
- Little or no insulation and single-pane windows
Permits and Inspections in Topanga
Permits for your project go through LA County Building & Safety, and we handle the full submittal, plan check corrections and inspections. We never suggest skipping a permit, because unpermitted work shows up during appraisals and sales and costs far more to fix later than it did to do right.
- Plan submittal and corrections handled with LA County Building & Safety
- Structural engineering where the scope requires it
- Title 24 energy compliance
- Inspections scheduled and met at every milestone
How Your Topanga Project Runs
Design-build means the people who drew your project are accountable for building it. You get a milestone schedule up front and a private client portal with your payment schedule, signed documents, approvals and job-site photos, so you can see where things stand without chasing anyone.
- Free on-site consultation anywhere in Topanga
- Fixed-price proposal with real specifications
- One project manager as your single point of contact
- Milestone-based payments and photo updates
- Final walkthrough, punch list and written warranty
Services We Offer in Topanga
FREQUENTLY ASKED QUESTIONS
Do you work in Topanga?
Yes. Topanga is part of our regular service area across the Westside and Los Angeles County. We'll come out for a free on-site consultation, walk the property, and tell you what's realistic before you spend anything on design.
Do I need a permit to remodel in Topanga?
If you're moving plumbing, adding or relocating electrical, removing walls, or adding square footage, yes. Permits are issued through LA County Building & Safety. Cosmetic work on the same footprint generally does not require a permit. We pull the permits for you and you reimburse the fees.
Can I build an ADU in Topanga?
In most cases, yes. California ADU law overrides many local restrictions, but setbacks, height limits, fire-severity zones, sewer capacity and your electrical panel still decide what's buildable. We review your specific parcel before any design work starts.
How much does a remodel cost in Topanga?
Bathrooms start at $18,000 for a guest bath, $28,000 for mid-range and $58,000 and up for a master suite, kitchens start at $35,000 for small, $55,000 for average and $80,000 and up for large, and ADUs $120,000 to $350,000. Whole-home remodels are usually quoted per square foot. Site conditions in Topanga and your material selections move the number, which is why we price after walking the property.
Are you licensed and insured to work in Topanga?
Yes. 1 Smart Build is a licensed, bonded and insured California general contractor. License details and proof of insurance are available on request, and every project is permitted and inspected.
DISCUSS YOUR PROJECT WITH 1 SMART BUILD
Licensed, bonded and insured design-build general contractor serving Los Angeles County and Southern California. Tell us about your property and goals, and we'll walk you through feasibility, permitting and a clear plan.