Deck Builder in Los Altos

Key Takeaways

• One project manager coordinates scheduling and inspections for the life of the project, from the first measurement through final sign-off.
• Failed ledger flashing is one of the most common reasons a deck inspection needs a return trip, since the weather barrier has to lap over the ledger correctly.
• A footing and framing inspection has to pass before any decking goes down, which is what sets the schedule more than the size of the deck does.
• Elevated and second-story decks cost more because they need deeper engineered footings and additional structural support, not because of the decking surface.
• Most residential deck replacements finish in one to three weeks once permits clear.
• Decking samples, railing systems, and color options can be seen in person at GVD's showroom on Five Star Blvd in Rocklin before anything is ordered.

How GVD builds decks

GVD Renovations designs, permits, and builds decks in Los Altos, from ground-level backyard platforms to elevated decks on sloped lots. Where a permit is required, the work is reviewed and inspected by the City of Los Altos or Santa Clara County. GVD holds California contractor license #989637 and carries full liability and workers' compensation insurance. Recent site visits have ranged from Country Club to nearby Sunnyvale and Cambrian Park, and every design starts with a measurement of your grade and attachment point.

How you plan to use the deck decides its size, where the stairs land, and how much railing it carries, and those choices drive the framing plan more than the house does. A deck built for a large dining table and gatherings needs a different joist layout and stair width than one meant for two chairs off a bedroom door. Tell us the use first, and the structure follows from that.

Carpenters, not a rotating crew assigned the week of the build, handle the framing that everything else depends on.

What a deck costs in Los Altos

Most of a deck quote is the part you never see once boards are down: the footings that carry the load and the framing that spans between them. Board selection is the visible choice homeowners weigh hardest, but it is a smaller share of the total than the structure underneath it.

The useful question at the outset is not which board you want but what the grade and the attachment point are going to require underneath it.

Composite deck replacement, standard size, $17,000 to $30,000. Trex, TimberTech, or DuraLife boards on treated framing with composite railing. No sealing cycle, and the most common build GVD does.

Wood deck replacement, redwood, $25,000 to $35,000. Redwood boards and railing over treated framing. Chosen for its natural grain rather than to save money, and it asks for periodic refinishing.

Premium PVC or stone-surface deck, $30,000 to $45,000. AZEK-type full-PVC decking, or stone or tile set over a waterproofed substrate, for owners who want the strongest moisture and stain resistance.

Large custom deck, covered porch, or waterproofed system, $45,000 to $100,000 and up. Covered structures, multiple levels, integrated lighting or benches, or a deck that doubles as a roof over living space. Most of the cost sits in engineering and framing.

For scale at the low end: a ground-level pressure-treated deck under 100 square feet runs near $5,000, which is the smallest project worth mobilizing a crew for.

The complete cost breakdown is on our main decking page.

Two quotes for the same footprint usually differ mainly on the surface material, since the framing, footings, and railing underneath carry a similar base cost. What pushes an elevated or second-story deck higher is the deeper footing work and added structure.

Wood, composite, and PVC compared

A decking material has to survive full sun, standing water, and foot traffic simultaneously, which narrows the field faster than the aesthetic conversation does.

Because redwood prices above standard composite, there is no payback period to calculate. Composite is both the lower-cost build and the lower-maintenance one, and wood is chosen for the look rather than the budget.

In Los Altos's mild, sunny climate the stressor is UV rather than heat or damp. Capped composite and PVC hold their color better than unsealed wood, and a lighter board keeps the surface more comfortable on sunny afternoons.

Trex, TimberTech, and DuraLife

Every line here has a track record long enough to judge. The question is which color and texture you want to look at for twenty-five years.

Our lines include Trex (Transcend and Enhance), TimberTech with its AZEK PVC boards, and DuraLife. Choose among them on color, texture, railing and hidden-fastener options, and price. The real fork in the road is capped composite versus full PVC: PVC contains no wood fiber, so it resists moisture and stains best and costs more.

Do you need a permit to build a deck in Los Altos?

Most decks attached to the house, or built more than 30 inches above grade, require a building permit, because both conditions trigger structural and guardrail review. The City of Los Altos or Santa Clara County applies that test to the specific project.

Under the California Residential Code, a deck is generally exempt from permitting only when all of these hold: it is 200 square feet or smaller, no more than 30 inches above grade at any point, not attached to the house, and not serving as the required exit from a door. Once any one of those fails, which is common the moment a deck is attached at a slider or French door, the project needs a permit and inspections. Some jurisdictions add their own rules, so we confirm locally.

When a permit is required, we draw the plans, submit them to the City of Los Altos or Santa Clara County, and schedule each inspection ourselves.

Deck code requirements and inspections

Passing inspection is not the goal in itself, but the things inspectors check are a reasonable list of the things that cause decks to fail.

The framing rules cover the parts you will not see: footing depth and bearing, how the ledger attaches to the house rim joist, and joist spacing matched to the decking's rated span. Guardrails are required at 30 inches or more above grade, and stair geometry and baluster spacing are checked at final.

Expect inspections at the footings, at framing and ledger attachment, and at final. Inspectors look closely at the ledger flashing, since the weather barrier has to lap over it rather than butt against it, and that is a detail we get right on the first visit.

Elevated and second-story decks

Height above grade changes the guardrail requirement, the footing depth, the post sizing, and the number of inspection stages, all at once.

In Old Los Altos and Country Club, the deciding factor is how fast the ground falls away from the house, and that is measured on site rather than assumed.

When the ground falls away steeply, the deck becomes a true structure: deeper engineered footings, a ledger rated for more load, and full-height guardrails. We design the footing layout for the measured slope, not a flat-lot spacing template.

How we build your deck

Knowing the sequence helps a homeowner read progress, since a deck spends a surprising share of its build looking like bare framing.

Each stage has to close out before the next begins, which is why a deck cannot be compressed the way some projects can. Footings and framing in particular gate everything after them.

How long a deck takes to build

A typical deck replacement runs one to three weeks on site. Where a specific project lands depends more on the structure below than on the square footage above.

Plan check timing is the biggest unknown before construction starts. Once building begins, elevated and second-story decks take longer than ground-level ones because of deeper footings and more inspections.

Maintaining your deck

The routine below takes very little time and is the difference between a deck that looks its age and one that does not.

Why Los Altos homeowners hire GVD Renovations

Our in-house carpenters handle a Los Altos deck from the first footing through the final walkthrough, rather than rotating out-of-area crews on and off the job. That matters most at the connections that carry weight: the ledger where the deck meets the house, the post-to-beam joints, and the stair stringers. The people who set those details are the people who stand behind them at inspection. When a permit is required, GVD handles the permitting process with the City of Los Altos or Santa Clara County, depending on where your parcel sits. Homes in Old Los Altos, Country Club, North Los Altos, and the Highlands vary in grade and setback, so we measure each site before quoting. Our showroom lets you compare decking boards and railing in person before you commit.

Having taken decks through the City of Los Altos or Santa Clara County plan review before, we know what inspectors check at the ledger, footings, and guardrails.