Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across San Marcos
Finding a general contractor in San Marcos who shows up when they say they will isn’t always easy. Penhallow Remodeling has built its reputation on written pricing before any work starts, background-checked crews in uniform, and a 365-Day Done Right Promise on every project. Whether you’re in San Elijo Hills dealing with settlement cracks or near Richland Road planning a kitchen remodel, we coordinate scheduling from our San Diego office with crews serving San Marcos locally. Call (936) 259-2607 and a real person answers, day or night.
Why Penhallow Remodeling Is San Marcos’s Preferred General Contractor Company
Homeowners across San Marcos call us because we put the number and the guarantee in writing before a single cabinet gets pulled. That’s the Kingswell standard: a written price up front, a real arrival window, and a 365-day promise to make it right if something’s not done correctly. Trevor Nash, who leads our team, insists on it for every project from a small bathroom vanity swap to a full home addition.
We know the difference between a cosmetic stucco hairline crack near San Elijo Road and the diagonal crack pattern that signals movement in the compacted fill pad underneath. That local knowledge means we don’t misdiagnose a structural problem as a finish issue, and we don’t wrap a structural fix inside a surprise change order either. San Marcos homeowners tell us the same thing: they’ve been burned before by a contractor who never showed or a price that ballooned after demo day. We answer our phones, we arrive in the window we gave you, and every technician who walks through your door is background-checked and in uniform.
General Contractor Services in San Marcos
General Contractor Services in San Marcos span the full remodeling spectrum, from first-upgrade kitchen refreshes in the tract homes near Twin Oaks Valley Road to whole-home reconfigurations in San Elijo Hills. A typical kitchen remodel here runs $14,000 – $45,000 depending on layout, cabinet line, and countertop material, while a small kitchen refresh in an original-condition tract home starts closer to $9,000. Bathroom remodels fall in the $9,000 – $28,000 range, with walk-in shower installations at $4,500 – $12,000. Home additions in San Marcos run $45,000 – $130,000, and ADU construction starts at $90,000.
Kitchen and Bath Renovation
San Marcos’s 1990s and 2000s tract homes came with builder-grade cabinets and laminate counters that are now 20 – 25 years old. We replace them with KraftMaid or Wellborn cabinetry and Cambria or Silestone quartz, and we document the structural condition underneath before any cabinet goes in. In a 2002 stucco-over-frame tract kitchen in San Elijo Hills, we opened the floor and found the original subfloor had heaved from a wet winter on the fill pad. Before any cabinet went in, we scoped a load-bearing check, sistered the framing, and relaid the subfloor, then set the cabinets and counters and confirmed inspection sign-off before closing the walls.
That’s the level of care every project gets, not just the ones where we find problems. We also caught a diagonal stucco crack above the garage that traced to a moving engineered retaining wall, documented it in writing, and priced the drainage correction in the same scope of work rather than springing it as a change order later.

Room Additions and ADUs
San Marcos has embraced ADU construction, and we build them from $90,000 – $220,000 depending on size, foundation work, and finish level. Room additions run $45,000 – $130,000. On hillside pads in San Elijo Hills, we pay close attention to the original retaining walls and subgrade drainage before we add load. The compacted fill beneath these homes moves after wet winters, and an addition that ignores that movement is a future crack waiting to happen.

What happens when you call
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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.
Construction Company in San Marcos
As a Construction Company working in San Marcos, Penhallow Remodeling handles the structural and envelope work that older tract homes need before finish work even starts. Window replacement runs $4,500 – $15,000, impact window installation $8,000 – $25,000, and garage conversions $30,000 – $80,000. When a San Marcos homeowner calls us about sticking doors or cracks above window corners, we check the foundation and fill pad before we quote anything, because what looks like a finish problem often isn’t.
Whole Home Remodels
Whole-home remodels in San Marcos give us the chance to fix what the original builder got wrong: the drainage, the under-slab plumbing, the undersized HVAC trunk lines from an inland valley summer that regularly hits 100°F. We price the full scope in writing up front, from first wall opened to final walkthrough, so the number on day one is the number on the invoice.
Fire Zone Compliance
Large portions of San Marcos sit inside Cal Fire’s High and Very High Fire Hazard Severity Zones. That means any major remodel or addition has to use ignition-resistant materials and ember-resistant venting. Coastal crews rarely deal with these assemblies because their typical project never requires them. We spec them as standard on any San Marcos job where the map says the home falls inside the hazard zone, because that’s what the city and county will require at inspection.
Trusted Brands We Service in San Marcos
Our San Marcos clients usually want products they’ve heard of, and we work with names that back their work with real warranties. We install KraftMaid and Wellborn cabinetry, Cambria, Silestone, and Caesarstone countertops, Kohler and Moen fixtures, and James Hardie siding. Prefab and panelized options like Abodu and Dvele have also come up with San Marcos homeowners exploring ADUs, and we’re comfortable working alongside those systems when the site conditions allow. Because we pull materials from local supply houses, we keep San Marcos projects moving without waiting on freight from out of state.
Common General Contractor Problems We See in San Marcos Homes
- Diagonal stucco cracks and sticking doors. These usually trace back to the compacted-fill pads under San Elijo Hills and other early-2000s hillside tracts. Expansive clay swells after wet winters, the pad moves, and the house above it moves too. Cosmetic patching doesn’t fix it.
- Builder warranty confusion. Many 2000s homes in San Marcos still have language in the original builder’s warranties that can be voided by unpermitted structural modifications. We check that window before demo starts and document everything.
- HOA architectural review misses. Master-planned communities like San Elijo Hills have architectural committees that must approve paint colors, window styles, and fence materials. Skipping that review means a stop-work order and a redo.
- Wrong materials for fire zones. Using standard vents and combustible siding in a Very High Fire Hazard Severity Zone fails inspection and costs thousands to correct. We spec Cal Fire-compliant assemblies from the start.
Pricing for General Contractor in San Marcos, CA
Here’s what we see in San Marcos, based on the market right now. These are written ranges, not verbal ballparks, and the number we give you in writing is the number you pay.
| Project | San Marcos Range |
|---|---|
| Small Kitchen Remodel | $9,000 – $20,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
What moves the number on a San Marcos project is the condition beneath the surface: whether the fill pad has settled, whether the builder-grade plumbing needs replacing, whether the home sits in a fire zone requiring upgraded assemblies. Every estimate is free, and it’s always in writing before work starts.
We Also Serve Cities Near San Marcos
Our General Contractor team works throughout North County. In addition to General Contractor in San Marcos, we serve Vista, Escondido, Carlsbad, and Encinitas, with the same written pricing and 365-Day Done Right Promise on every job.
Serving San Marcos, CA - Our Local Coverage Area
We’re based in the San Marcos area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQ About General Contractor in San Marcos
It can, if the remodel involves structural changes, electrical or plumbing alterations, or anything that conflicts with the original builder’s warranty language. Many San Marcos tract homes built between 1998 and 2008 have warranty clauses that require the original builder or their authorized contractor to perform certain repairs, and unpermitted work can void coverage. We check the warranty language in writing before we open any wall. Call (936) 259-2607 and we’ll review it with you at no charge.
Yes. Master-planned communities like San Elijo Hills have architectural review committees that must approve exterior changes before work begins, including window styles, paint colors, fencing materials, and any exterior additions. The City of San Marcos also requires permits for structural, electrical, plumbing, and mechanical work. We handle the paperwork on both fronts. Call (936) 259-2607 for a free estimate and we’ll map out exactly what needs approval for your project.
In San Marcos’s hillside tracts, this usually means the compacted-fill pad under your home is settling over expansive clay. Wet winters cause the clay to swell, the pad shifts, and the stucco cracks diagonally above windows and garage corners. It’s not cosmetic, and patching it won’t fix the underlying movement. Call (936) 259-2607 and we’ll send someone to assess the foundation before you spend money on surface repairs.
If your home falls within the Cal Fire High or Very High Fire Hazard Severity Zone, yes. Large portions of San Marcos sit inside those zones, and the building department will require ignition-resistant exterior materials and ember-resistant venting for any major remodel or addition. We spec these assemblies as standard on qualifying projects, because we know the map well enough to know when they apply. Call (936) 259-2607 for a free estimate that includes the correct materials for your zone.
The kitchen. Most San Marcos tract homes still have their original builder-grade laminate counters and cabinet boxes, which are now 20 – 25 years old and failing. A small Kitchen Remodeling - San Marcos project runs $9,000 – $20,000, and it’s the upgrade that most changes how a home lives day to day. Call (936) 259-2607 to schedule a free estimate and we’ll put the number in writing.
Ready to work with a General Contractor who writes the price and the guarantee down before the first tool comes out? Call (936) 259-2607 today. A real person answers, and the estimate is free.
Written by Trevor Nash, Owner at Penhallow Remodeling, serving San Marcos and North County with written pricing and the 365-Day Done Right Promise on every project.







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