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Modern custom home built by Turnil Construction in San Mateo County
160+ happy customers on the Peninsula

We design, build and maintain your home.

Turnil Construction, Inc. is a licensed San Mateo County general contractor handling custom homes, remodels, concrete, landscaping and everything structural in between, with our own crews.

San Mateo County
Licensed & insured
Residential & commercial
200+
Projects completed
10+
Years building on the Peninsula
100+
Satisfied customers
10
Cities served
Who we are

One contractor, the whole project

At Turnil Construction, Inc. we build and renovate residential and commercial property across San Mateo County and the San Francisco Bay Area, from a kitchen remodel to a ground-up custom home.

Most jobs go sideways in the gaps between trades. We closed those gaps by keeping framing, concrete, roofing, landscaping and finish work in house, under one licensed contractor, with one schedule and one person you call. That is why clients keep bringing us the next project instead of starting over with somebody new.

  • Quality and precision on every project, from the footings up
  • Transparent written estimates and communication you do not have to chase
  • Comprehensive expertise: design, permits, construction and final inspection
“Gerson applies his knowledge and varied experience and together with his team performs excellent work.”
Terry K. · Turnil client
The Turnil Construction crew and fleet
Finished built-in millwork and fireplace surround
Turnil crew placing a concrete slab
What we do

Services

Remodeling, room additions, decking, patios, landscaping and concrete work, each project built to your vision and to the highest safety and code standards.

01

Custom Home Building

Ground-up homes built from your plans or ours, with design collaboration, permit coordination and full project management from the first survey to move-in day.

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02

Remodeling, Additions & ADUs

Kitchens, bathrooms, room additions, attic and basement conversions and full home renovations, all built to California building and electrical code.

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03

Concrete, New & Repair

Foundations, slabs, driveways, walkways, steps and retaining walls, formed and poured by our own crews rather than handed off to a sub we have never met.

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04

Landscaping, Decks & Patios

Outdoor spaces designed to be used: composite and wood decking, paver patios, planting beds, hardscape walls and drainage that actually works through a Bay Area winter.

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05

Framing & Structural Carpentry

Structural framing, shear walls, beams, stair framing and finish carpentry, including built-ins and custom millwork on the same job by the same crew.

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06

Roofing & Siding

Re-roofs, tear-offs, underlayment and flashing detail, plus siding and stucco repair, dry rot replacement and exterior painting.

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All services →
Built stronger

ICF construction: fire resistant, quiet, efficient

We build with insulated concrete forms, a reinforced concrete core inside rigid insulation, producing structures that are exceptionally strong and highly resistant to fire.

  • Reinforced concrete core for structural strength
  • Continuous insulation for lower heating and cooling loads
  • Substantially quieter interiors than standard wood framing
  • A serious advantage on wildfire-exposed Peninsula lots
ICF wall system braced and ready for the concrete pour
Our recent work

Projects across the Peninsula

Kitchens and baths, custom homes, concrete and outdoor spaces. Every photo here is our own work.

Modern custom home built by Turnil Construction
Custom kitchen with waterfall marble island
Stucco retaining wall, steps and new planting
Timber framing on a new two-story build
Finished concrete driveway and walkway
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How it works

From first walkthrough to final inspection

Step 01

Free consultation

We come out, look at the property and listen to what you actually want. No charge, no pressure, and an honest read on what is realistic.

Step 02

Plan & permits

Design collaboration, scope and a written estimate, then we handle drawings, engineering and the permit process with the city or county.

Step 03

Build

Our own crews on site with one point of contact, a schedule you can see, and the trades sequenced so the job keeps moving.

Step 04

Walkthrough & warranty

Final inspections, a punch list we actually finish, and a walkthrough before we call it done.

What clients say

Trusted by 100+ Bay Area homeowners

Reviews from Turnil clients across San Mateo County. Full reviews are on our Google, Yelp and Thumbtack profiles.

★★★★★

“Overall, I was pleased with the job and had a very quick turn around time which is really hard to get these days. I will definitely use them again.”

Mike T.
Verified client review
★★★★★

“Gerson applies his knowledge and varied experience and together with his team performs excellent work. Turnil Construction has built out an attic, poured concrete, landscaped my yard, installed an electrical tie-in for a pump and outdoor lights, tile work, and fence installation. I have been very pleased with the results.”

Terry K.
Verified client review
★★★★★

“Turnil Construction is not only the best group of guys I've ever worked with, but their work ethic and attention to detail is amazing. And talk about value, they can't be beat!”

Gwen F.
Verified client review
Where we work

Serving San Mateo County & the Bay Area

Based in San Mateo County and working up and down the Peninsula and into San Francisco.

Questions

Frequently asked

How much does concrete construction cost in San Mateo County?
It depends on project size, design complexity, site conditions and materials. We walk the property, measure, and give you a detailed written estimate so the pricing is transparent before anything is scheduled.
What is the process for building an ADU in San Mateo County?
Property evaluation, architectural planning, permit approval, site preparation, construction and final inspections. We manage each phase, including zoning compliance, so you are not chasing the city yourself.
What makes Turnil Construction different?
One licensed contractor handling framing, concrete, roofing, landscaping and finishes with our own crews, so the trades are coordinated instead of blaming each other. Precision craftsmanship, quality materials and communication you do not have to chase.
How do I choose the right contractor for my project?
Verify the company is licensed and insured, and that it has actually done your specific type of work, whether that is concrete, an ADU, excavation or structural framing. Ask to see finished projects like yours and get the scope in writing.
Do you handle both residential and commercial work?
Yes. We build and renovate single family homes, multi-unit properties and commercial spaces throughout San Mateo County and the greater Bay Area.

Ready to talk about your project? Get a free on-site estimate.

Free estimate

Tell us about your project

Send us the basics and we will schedule a walkthrough of your property. You get a detailed written estimate after we see the site, not a number over the phone.

Phone
(650) 640-0644
Service area
San Mateo County, the Peninsula and the greater San Francisco Bay Area
Scope
Residential and commercial construction, remodeling and outdoor work
Reviews
Google, Yelp and Thumbtack
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