Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Westmont
Finding a general contractor in Westmont who understands county permitting, mid-century framing, and the realities of renovating an unincorporated LA County pocket is harder than it should be. Penhallow Remodeling Los Angeles serves Westmont homeowners with written pricing before any work starts, a real arrival window, and a 365-day guarantee in writing on every job. If you’re planning a kitchen remodel, a bathroom update, a whole-home rewire, or an ADU on your Westmont lot, call (213) 277-6578 and we’ll walk the property with you before quoting. No verbal ballparks. No surprises at inspection. Just a number you can hold us to.
Why Penhallow Remodeling Los Angeles Is Westmont’s Preferred General Contractor Company
Westmont homeowners call us because we know the difference between a City of LA permit and a Los Angeles County Title 26 permit, and that difference can stall a project for weeks if someone gets it wrong. Our General Contractor team plans every Westmont job around county review timelines, local amendments, and the inspectors who actually sign off on your block. That local knowledge shows up in the estimate, not as a change order later.
We carry the Kingswell standard on every Westmont job: written price before work starts, a defined arrival window, a clean job site, and a written guarantee. Trevor Nash runs the crew the same way whether we’re roughing in a bathroom near 108th and Western or scoping an ADU setback off Vermont Avenue. You get background-checked, uniformed technicians who answer to a real person on the phone, 24/7. Not a voicemail maze.
Styles & brands we work with
Hire a General Contractor in Westmont
Hire a General Contractor in Westmont when the project touches structure, plumbing, electrical, or anything a county inspector will need to sign off on. That means kitchens, bathrooms, additions, ADUs, garage conversions, and major rehabs. Westmont’s unincorporated status means your permit file lives with LA County, not City of LA, and the contractor you hire needs to know which code book applies before the first wall comes down.
A typical kitchen remodel in Westmont runs $14,000 – $45,000 depending on cabinet line, countertop material, and how much of the original 1950s framing and wiring you’re keeping. We install Cambria quartz and KraftMaid cabinetry, both of which carry manufacturer warranties that layer on top of our own 365-Day Done Right Promise.
Whole-home scope and the mid-century reality
Most Westmont homes were built between the 1940s and 1970s with wood framing, stucco exteriors, and original plumbing and electrical. That means a whole-home remodel often includes a rewire, a repipe, and some foundation attention before finish work begins. We scope all of that before quoting, so the written number reflects what the house actually needs, not what a salesperson hoped it needed.
General Contractor Services in Westmont
General Contractor Services in Westmont span kitchens, baths, additions, ADUs, garage conversions, and whole-home remodels, all planned around county inspections and the aging bones of mid-century homes. A bathroom remodel runs $9,000 – $28,000. A home addition runs $45,000 – $130,000. An ADU on a Westmont lot with septic and well setbacks typically runs $90,000 – $220,000 depending on site work, drainage, and utility runs.
We source materials from recognized trade brands, Kohler and Moen fixtures, James Hardie siding, Cambria and Silestone countertops, so the finish work stands up to Westmont’s hot summers and occasional heavy rain events the same way the framing does.
Additions and ADUs on county land
Westmont lots fall under county zoning, which means setbacks, septic field distances, and drainage patterns all get scrutinized differently than they would across the city line. Our crews pre-check Title 26 amendments and grading requirements before we ever pull a permit, because county inspectors in Westmont enforce those stricts and a missed detail becomes a stop-work order.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Westmont
We stock and install materials Westmont homeowners ask for by name: KraftMaid and Wellborn cabinetry, Cambria, Silestone, and Caesarstone countertops, Kohler and Moen fixtures, and James Hardie siding. When a Westmont kitchen or bath needs a part matched or a fixture replaced, we can usually source it locally through our trade suppliers and keep the job moving without waiting on a long haul across town. The brands behind your remodel carry their own manufacturer warranties, which sit alongside the written guarantee we put on every job.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Westmont Homes
- City of LA permits filed by mistake. Westmont is unincorporated Los Angeles County, so a permit pulled through the wrong jurisdiction gets rejected and the job stalls. We verify jurisdiction first on every Westmont project.
- Knob-and-tube wiring hiding in the walls. Homes built in the 1940s and 1950s often still have original wiring that cannot support a modern kitchen or bath. We include a contingency for this when we scope a mid-century Westmont remodel.
- Cast-iron drain lines under the slab. Original plumbing from the 1950s and 1960s corrodes, and a bath remodel can uncover a drain that needs replacement before tile goes down. We flag this in the written estimate, not after demo.
- Drainage and grading failures on open lots. Westmont’s semi-arid climate means long dry stretches, then sudden heavy rain. If runoff crosses a septic field or well setback on an ADU or shop build, the county won’t sign off. We plan grading before we quote.
Pricing for General Contractor in Westmont, CA
Here are the market ranges for common Westmont projects, scoped for county permitting and mid-century housing stock:
| Project | Westmont Price Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
What moves the number: whether you’re keeping the original layout, the condition of the existing wiring and plumbing, county-required drainage work on the lot, and the cabinet line and countertop material you choose. We hand you a written price before any work starts, and that number is the number on the invoice. Call (213) 277-6578 for a free estimate on your Westmont project.
We Also Serve Cities Near Westmont
Our crews serve Westmont directly, and we also take projects in nearby Los Angeles, Burbank, Santa Monica, and North Hollywood. If you’re just outside the Westmont boundary and wondering whether we cover your street, call (213) 277-6578 and ask. If it’s within reach, we’ll scope it the same way: written price, real arrival window, written guarantee.
Serving Westmont, CA - Our Local Coverage Area
We’re based in the Westmont area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About General Contractor in Westmont
Westmont’s unincorporated status means every permit, inspection, and code reference runs through Los Angeles County Title 26, not City of LA municipal code, which typically adds one to three weeks to the permitting phase compared to a city jurisdiction, and that timeline holds if the plans are clean. A City of LA permit filed by mistake gets rejected and can add weeks. We pre-check plans for county amendments before we submit, which keeps the review moving instead of bouncing. Call (213) 277-6578 and we’ll pull the specific timeline for your address.
A scope of work for a 1950s Westmont rewire should include removing knob-and-tube wiring, upgrading the panel to at least 200 amps, adding AFCI and GFCI protection where county code requires, and patching the drywall or plaster that gets opened for wire runs. On a 1950s wood-frame home near 108th and Western, we scoped a whole-home rewire and repipe before county inspectors arrived. Our general contractor walked the original crawlspace, flagged a deteriorating subfloor under the kitchen, and added a change order for joist sistering, so the rough-in passed on the first inspection sign-off instead of triggering a stop-work order. A tight scope avoids exactly that kind of surprise. Call (213) 277-6578 for a scope review, estimates are free.
Yes, any load-bearing wall change in Westmont requires a Los Angeles County building permit, and you’ll need a structural engineer’s letter or stamped plan before the county will sign off. County inspectors in Westmont enforce Title 26 strictly on structural changes, so unpermitted work becomes a title issue when you sell and a safety issue while you live there. We pull the permit, schedule the inspection, and make sure the beam sizing is in the plans before the wall comes down. Call (213) 277-6578 to talk through your wall removal.
Yes, you can add an ADU on a Westmont property with septic and a well, but the county requires separation distances between the ADU, the septic field, and the well head, which can move the building envelope or change the foundation plan. Drainage and grading plans also get scrutiny, because runoff cannot cross the septic field or well setback and still pass inspection. We scope the site before quoting so the written number includes whatever grading, retaining, or repositioning the county will actually require. Call (213) 277-6578 for a site-specific ADU evaluation.
The biggest hidden cost in a mid-century Westmont remodel is electrical and plumbing work inside the walls: knob-and-tube wiring that must go, cast-iron drains that have corroded, and a subpanel that cannot carry a modern kitchen or bath. On the lot side, drainage and grading requirements for additions or ADUs on open Westmont parcels can add real money to the site work. We write a contingency for these into every mid-century quote, so the number you sign is close to the number you pay. Call (213) 277-6578 for a free estimate tailored to your house.
Written by Trevor Nash, Owner at Penhallow Remodeling Los Angeles, serving Westmont under the Kingswell standard since 2004.
