
Cracked, uneven, or missing a floor entirely? We pour and finish concrete floors for garages, ADUs, and home additions - prepped right for Bay Area clay soil conditions.

Concrete floor installation in Mountain View means pouring a reinforced slab on a properly compacted base, finishing the surface to your specs, and cutting control joints to manage cracking. Most residential garage floors take one day to pour and are ready for light foot traffic within 48 hours, with full strength reached over 28 days.
Mountain View homeowners ask about floor installation for a few common reasons: a cracked garage slab that has gotten worse each wet season, a garage conversion or ADU project that needs a finished floor as a starting point, or a room addition where there is currently no slab at all. In any of these situations, the prep work before the pour matters as much as the pour itself - and in Mountain View's clay soils, skipping proper base compaction is one of the fastest ways to end up with cracks again in two or three years. If you are adding a floor as part of a larger project, we can also look at garage floor concrete finishing options that give you a surface built specifically for how you use the space.
Mountain View's ADU and garage conversion market is particularly active, and floor specifications for living spaces differ from standard garage slabs. If your project involves a conversion, talk with us and the city's building department before the pour - changing the floor spec after the fact is expensive.
Small hairline cracks in concrete are common and often harmless, but if you notice cracks widening, running diagonally, or with edges at different heights, the slab may be moving. In Mountain View, this kind of movement is often tied to clay-heavy soil shifting with seasonal wet and dry cycles - and it tends to get worse, not better, on its own.
If water sits in low spots rather than draining toward a floor drain or the garage door, the floor is no longer level. This can happen gradually as the slab settles, and it creates a slipping hazard and a moisture problem that can damage anything stored on the floor.
When the top layer of concrete is flaking, pitting, or breaking down into powder, that is called spalling. It can happen when a floor was not finished or sealed properly, or when moisture has been working through the slab for years. Once spalling starts it tends to spread, making the floor harder to clean and a potential tripping hazard.
Mountain View's permitting process for ADU and garage conversion projects typically requires a floor that meets residential standards. A raw or unfinished slab may not qualify. Getting the floor right at the start saves significant rework later - and in this city, conversion projects move fast once permits are in hand.
We handle concrete floor installation for garages, basements, room additions, ADUs, and light commercial spaces in Mountain View and across the surrounding area. Every project starts with base preparation - compacting the subgrade, laying gravel where needed, and placing a moisture barrier before the concrete goes down. We reinforce with steel mesh or rebar depending on the intended use and thickness, pour the slab, and finish the surface to your specs - broom, trowel, sealed, or stained. Control joints are cut after the pour so that if any shrinkage cracking occurs, it follows planned lines rather than running randomly across your floor.
For pool surrounds and outdoor entertainment areas that need a finished concrete surface, we can also discuss concrete pool decks as part of the same project. And if you are upgrading your garage floor specifically - whether after a conversion or just to improve an aging slab - our garage floor concrete work covers finishing options like sealed, epoxy-ready, or polished surfaces that go beyond a basic pour.
Suits homeowners with a cracked, settled, or deteriorating slab that needs a full replacement rather than patching.
Suits garage conversions and ADU projects where the floor needs to meet residential standards, including moisture barrier and finish requirements.
Suits room additions, workshops, or enclosed utility spaces where there is currently no concrete floor and one needs to be poured from scratch.
Suits homeowners who want a functional, clean-looking surface that resists oil and water and is easy to maintain long-term.
Mountain View's ranch-style homes from the 1950s and 1960s often have original concrete garage floors that are now 60 to 70 years old. Those floors have been through decades of clay-soil movement, wet winters, and dry summers, and many of them show it - uneven surfaces, widening cracks, and a surface that spalls and collects dirt. In a city where home values rank among the highest in Santa Clara County, an old cracked garage floor is one of the details that buyers notice at an open house. A new floor does not just fix a problem; it changes how the whole space reads.
We install concrete floors regularly throughout Mountain View and nearby communities. Homeowners in Sunnyvale, CA deal with the same clay-soil conditions and aging housing stock, and so do homeowners in Santa Clara, CA where garage conversions and ADU projects are also common. If you are planning a floor project anywhere in the South Bay, we can help.
We come to your property to look at the space, assess the existing base or old slab, and determine what prep work the site needs. You get a written estimate that breaks down what is included - prep, pour, finish, and permit fees - before anything is agreed to.
We pull the building permit through the City of Mountain View before work begins. Permit approval typically takes a few days to two weeks depending on city workload. We handle the application entirely - you do not need to visit the building department or follow up with the city.
The crew removes any old flooring, compacts the subgrade, lays the gravel base and moisture barrier, then pours and finishes the slab in a single session. The pour itself takes several hours. Once it is down, the surface is off-limits - plan to park elsewhere for at least a week.
We allow the full curing period before the space is returned to use. If the project required a city permit, a building inspector signs off before we close out the permit. We walk the finished floor with you and explain the control joints, any sealer applied, and what to watch for over time.
We reply to all inquiries within one business day. The estimate is written, specific, and there is no obligation.
We will come see your space, give you a written estimate that covers prep, permit, and finish - no surprises on the invoice.
(650) 582-0077We compact the subgrade and add a gravel layer with a moisture barrier on every floor we pour in Mountain View - because Bay Area clay soils require it. A floor poured on a poorly prepared base in this climate will show cracks within a few years. Getting the base right is how we avoid that call.
Mountain View's ADU ordinance has specific floor requirements for converted living spaces. We know what the city looks for, and we build floors for conversions that pass inspection the first time. Getting this right early avoids expensive retrofits after the rest of the conversion is finished.
We pull permits through the City of Mountain View Building Division for every eligible project. Permitted and inspected work is documented - which matters when you go to sell a home in one of the most scrutinized real estate markets in the country.
Every estimate we provide breaks down prep work, pour, finishing, and permit fees separately. You know exactly what you are paying and why before any work begins. In a market where contractor costs can vary widely, that transparency lets you compare bids and make a confident decision.
A concrete floor done right the first time is the foundation for everything else you plan to do with that space - whether that is a clean garage, a finished ADU, or a workshop. Call us and we will walk you through exactly what your project needs.
For outdoor entertaining areas around a pool, a finished concrete deck extends your living space and handles foot traffic and moisture.
Learn MoreA garage-specific pour with finish options like sealed, troweled, or epoxy-ready surfaces built for vehicle traffic and daily use.
Learn MoreBay Area summers give concrete the ideal curing conditions - spots fill fast and we want your project on the calendar before the season closes.