Full Home Renovation in San Dimas

San Dimas is its own building department, not LADBS, and that catches a lot of homeowners by surprise. Permits, plan-check turnaround, and inspection cadence are different than the City of LA, and the foothill VHFHSZ-adjacent zones north of Foothill Blvd add WUI fire-hardening (Chapter 7A) that flatland contractors routinely miss. Add Marshall Canyon equestrian-overlay parcels and you've got a renovation that needs a GC who reads the local rules. We've been designing in 91773 since 2016 and pulling our own permits as the GC since 2023. Real cost band: $220-$420/sf. We'll tell you the scope-risk read before you sign.

What a San Dimas whole-home renovation actually costs in 2026

Off real invoices closed in the last 18 months on 91773 work: $220-$300/sf for a clean cosmetic-plus-systems renovation on a 1970s-90s tract home — kitchen, baths, flooring, paint, HVAC, panel upgrade, no wall moves. $300-$380/sf when you're moving non-bearing walls, opening up the kitchen-to-family, redoing the primary suite, and replacing windows. $380-$420/sf for a gut-to-studs with structural reframing, new roof, full electrical re-pipe, and high-end finish package. Foothill VHFHSZ-adjacent parcels above the 210 freeway add $30-$60/sf for Chapter 7A WUI compliance (ember-resistant vents, Class A roofing, 1-hour exterior wall assemblies in some cases, ignition-resistant decking).

About 40% of San Dimas homes north of Foothill Blvd are inside or adjacent to the LA County VHFHSZ. The Bldg Dept will require WUI compliance for substantial renovations and the cost premium is real. We price it as a separate line item so you see exactly what the fire-hardening is costing you.

Off your bid by more than 10%? We'll show you the line items — labor by trade, materials by spec, soft costs and contingency — and explain why the number is what it is. About 65% of clients who come to us off a competing bid stay because the line-item transparency clarifies what they're paying for.

San Dimas Bldg Dept — what it actually does to your timeline

San Dimas runs its own plan check and inspections out of City Hall on Bonita Ave. Plan-check turnaround on a residential renovation is typically 3-5 weeks for first review, 2-3 weeks for resubmittals. That's faster than LADBS but slower than a flatland LA Co. unincorporated permit, and the over-the-counter pre-screen they offer for minor work saves a real week if you qualify. We've pulled 40+ permits at San Dimas City Hall — the plan-checker rotation matters, and we know which way they lean on grading, retaining walls over 4ft, and Chapter 7A interpretations.

Marshall Canyon equestrian-overlay parcels have additional setback and easement rules that don't show on the standard zoning sheet. If your lot is in or adjacent to the equestrian overlay, we read the title report and pull the overlay map before we design — saves a redraw cycle.

Foothill VHFHSZ parcels need Chapter 7A signoff from the Bldg Dept as part of the permit. We bake that into the plan set from day one so it doesn't become a corrections-list item three weeks into plan check.

1970s-90s tract construction — what's actually under the drywall

Most San Dimas housing stock is 1970s-90s tract built — Galaxy Homes, Lewis Homes, and similar production builders. We've opened enough of these to know the patterns: aluminum branch-circuit wiring in some 1972-75 vintage (recall risk, panel upgrade triggers a remediation conversation), polybutylene supply lines in some 1985-92 builds (replace at re-pipe), and undersized ridge beams when the original owner added a sunroom in the 90s. Pre-renovation we do a destructive-inspection at three test points — attic, crawl, and a wall cavity behind the kitchen — and we tell you what's actually there before we bid.

About 30% of 1970s-90s San Dimas homes have at least one prior un-permitted addition or conversion. The Bldg Dept will require legalization or removal during permit on the new work. We map this on the title and the as-built before we price.

Foundation issues are less common in San Dimas than in older LA basin stock, but the foothill-adjacent parcels north of the 210 sit on alluvial fan soils with seasonal expansion. We pull the geotech if there's any structural sign and we price soil-stabilization separately so it's not a surprise at framing.

Why one-firm design-build beats architect-then-bid on tract renovations

The traditional model — hire an architect, finish drawings, then bid to GCs — wastes 3-6 months on tract-home renovations because the architect doesn't have a GC at the table during schematic. We've watched San Dimas clients get a $180K architect's estimate turn into $310K at bid because the original 200A panel couldn't carry the load, the ridge beam wasn't sized for the wall the architect wanted to remove, and the WUI requirement on a north-of-Foothill parcel wasn't priced. Design-build means our structural and electrical sub are at the table at schematic — the budget on page one is the budget at framing.

GMP contracts mean the construction number on page one is the number at framing. If a sub gives us a surprise, that's on us. Shared-savings structure means we have the same incentive you do to hit the number.

Architect-then-bid is fine for big custom projects where the design is the point. On a $300-$600K tract renovation, the savings on coordination and re-drawing more than pay for the design fee.

Our process and what you get when you call

First call is 15 minutes. We look up your APN, pull the zoning, the VHFHSZ overlay, the equestrian overlay if applicable, and the permit history. We tell you whether your renovation is a 3-month permit job or a 7-month one, and we give you a realistic cost band before the site visit. If it's worth a site visit, Netanel walks the home — free, no commit, no follow-up if you decide we're not the fit. CSLB #1105249, BBB A+, 200+ LA County projects since 2016. We're booked through Q2 2026 on San Dimas work; new project intake for Q3+ slots opens monthly.

We don't take every job. If we're not the right fit, we'll tell you that on the first call and point you toward a local San Dimas builder who is. We don't oversell our pipeline.

Realistic Q3 2026 start dates require commitment by Q1 2026. If we can't start in your timeframe, we'll tell you on the first call.