Licensed, bonded and insured  ·  Kaminskiy-certified technicians  ·  Workmanship warranty on every job
Kaminskiy Care + Repair Call 408-916-4022
Ceiling StainsSoft DrywallLeak SourceMold SpotsRebuild

Mold & Water Damage Repair in Sunnyvale, CA.
Dry and Done.

Kaminskiy technician rebuilding a water damaged wall
Your Water Damage ProsFIXED IN ONE VISIT
4.813 Sunnyvale Google Reviews
BBBBBBAccredited Business
10,000+Homes Cared For
21 Years in Business
Priced & scheduled in under 10 minutes
Kaminskiy technician rebuilding a water damaged wall
1Stain gone, wall rebuilt
and painted to match
Water Damage & Mold RepairDONE IN ONE VISIT
21 Years in Business
Priced & scheduled in under 10 minutes
A professional shows up. The work is done right. We fix it, you relax.
THE SHORT ANSWER

Kaminskiy Care and Repair repairs water damage and mold damage on drywall, ceilings, trim and cabinets: the leak confirmed stopped, wet material removed, the area dried and treated, then rebuilt and painted to match. Large scale remediation and air testing are referred to a licensed specialist, and we handle the rebuild after. We serve Sunnyvale and the surrounding California communities.

★ Google 4.8 · 13 Sunnyvale reviews●4.7 · 1,150 reviews company-wide●BBB Accredited●Best of Houzz●Union-Tribune Readers Poll●Kaminskiy-Certified Technicians●10,000+ Homes Cared For●Workmanship Warranty●21 Years of Kaminskiy●
WATER NEVER STAYS SMALL

If water got in,
we take the damage out

21 Years in Business Our office is on Murphy Avenue. Flat-roof scuppers and slab lines lead the Sunnyvale water list.
DRIED, REBUILT, FINISHED

Sunnyvale Water Damage Repair

Sunnyvale is Eichler and ranch-tract country, and its water damage comes from the roof and the floor. A flat or low roof shows a slow scupper as a ceiling stain after the first storm; a supply line poured into a radiant slab shows as a warm spot and a dark baseboard. Add sixty-year-old tub walls. We find which, schedule the licensed roofer or plumber who closes it, cut out the wet ceiling, drywall and trim, dry the cavity, and rebuild it to read as original.

CeilingsWallsBaseboardsUnder SinksWindow SillsFlat Roofs
Call About Your Project Get a Free Online Quote
★ FLAT ROOFS, SLABS, REBUILT RIGHT
A brown water stain spreading across a bedroom ceiling before repairThe same ceiling repaired, textured and painted with no trace of the stainAFTERBEFORE
Leak Source CheckWe confirm where the water came from before anything gets closed up.Get it fixed
Wet Drywall RemovalSoft, stained or crumbling drywall cut out cleanly to sound material.Get it fixed
Drying & TreatmentThe cavity dried and surfaces treated so the problem does not return.Get it fixed
Ceiling RepairStained or sagging ceilings rebuilt, textured and painted to match.Get it fixed
Mold Spot RepairSmall spots on drywall, trim and grout removed and the surface restored.Get it fixed
Baseboard & TrimSwollen, warped trim replaced and finished like it was never touched.Get it fixed
Under-Sink CabinetsCabinet floors and panels ruined by slow leaks rebuilt.Get it fixed
Full RebuildTexture, prime and paint so the repair disappears into the room.Get it fixed
SUNNYVALE HOMES, SUNNYVALE PROBLEMS

Flat roofs and radiant slabs
leak in their own ways

Call 408-916-4022
A stain spreads across the tongue-and-groove ceiling under a Fairbrae scupper after the first storm.
One stretch of the slab is warm underfoot and the baseboard above it has gone dark.
The drywall outside a Cherry Chase hall bath is soft at the floor where the tub wall lets go.
The mahogany panel at the bottom of an Eichler wall has swelled and the finish has lifted.
The floor of the sink cabinet in a Lakewood kitchen is warped and smells musty.
The ceiling of a north-side condo has a ring under the unit upstairs that grows every week.

Our office is minutes from every one of these. A Kaminskiy-certified technician meters it, names the source and writes the scope at the look.

HOW IT WORKS

Three steps from stain
to like it never happened

Kaminskiy team member answering a call
01
Call us or fill out the form

Priced and on the calendar during the first call.

Clear written quote
02
Get your free estimate

A written quote you approve before anyone drives out.

Kaminskiy technician greeting a client at the door
03
We fix it. You relax.

One crew, the whole list, warranty in writing.

The Kaminskiy Guarantee

A one-year workmanship warranty, in writing, on every Sunnyvale water damage repair.

Workmanship warrantyLicensed, bonded & insuredKaminskiy-certified techniciansBackground checked crews

Ceilings we saved
in Sunnyvale

4.8 of 5 · 13 Google reviews on our Sunnyvale profile, read October 2026
★★★★★
Ray Trejo did an excellent job repairing a wall for me. He was punctual, professional, efficient, and friendly. And, the job price was very reasonable. I will definitely be requesting Ray at Kaminskiy Care and Repair Handyman Services the next time I need w...Kristin Brantz · Google, 2 years ago
★★★★★
Dairain did a great job with the electrical, plumbing and carpentry projects. He checked with us on the options and worked hard to complete the job in a timely manner.Jeremy Sheryl · Google, 2 years ago
★★★★★
Celso has done a fantastic job- it is great to know our deck is in great shape again! Than you!Paul Roben · Google, 2 years ago
★★★★★
Celso was great! We scoped-out the project together, agreed on a plan-of-action, and did a trial on one section of flashing. The result was not to Celso's standards and we agreed the original plan would not work. So, we changed gears and I asked Celso to...John Peters · Google, 2 years ago
THE WATER DAMAGE GUIDE

Know what water does
before you paint over it

Why the stain comes back

Paint hides a stain for a few weeks; it does not stop one. Tannin and minerals follow the water to the surface, and they keep coming as long as the route is open. In Sunnyvale the route is often a flat roof that drains to a scupper, so the stain grows with each storm and stops in April, and the owner forgets it until November. Or it is a slab line that never stops at all. We find the route first, meter the cavity dry, and only then seal, texture and paint.

Repair, or replace?

A firm, stained board or sheet with nothing growing behind it can be dried, sealed with a stain-blocking primer and refinished. Drywall that is soft, sagging or crumbling comes out to sound edges, with the insulation behind it and the baseboard that swelled. An Eichler tongue-and-groove ceiling board or a mahogany panel that has cupped is replaced in kind and finished to match the run, because a patch reads from across the room on a ceiling like that. Subfloor that delaminated comes out to the joists. The written scope says which, board by board.

When it is a remediation company's job, not ours

California licenses no mold trade, so the line we hold is the EPA's: surface growth of about ten square feet or less is removed, treated and rebuilt over by the technician; more than that, growth inside the wall cavities of more than one room, a sewage backup, or anyone in the home with breathing trouble means a remediation company with containment and a written protocol, and that is not our lane. Air and surface sampling is a testing specialist's. They clear it, then we rebuild.

Keeping it dry

On a flat roof, clear the scuppers and the drains before the first storm and look at the ceiling under each one after it; on a radiant slab, note a warm spot or a jump in the water bill and call before the baseboard shows it. Look under every sink once a season, replace the dishwasher and washer hoses when they stiffen, put a pan under the garage water heater, and recaulk the tub corners the year the bead cracks. Most of the water damage we rebuild in Sunnyvale had been going for a month before the stain showed.

SUNNYVALE, SOUTH TO NORTH

The Sunnyvale water story,
house by house

Our South Bay office is downtown on Murphy Avenue. An Eichler in Fairbrae, a Heritage District cottage and a north-side condo take on water from different directions.
THE EICHLERS AND THE MID-CENTURY TRACTS

Fairbrae, Cherry Chase, Birdland, Las Palmas, Sunnyvale West

Post-and-beam houses with flat or low roofs that drain to scuppers, radiant slabs with the supply and drain lines poured in, tongue-and-groove ceilings and mahogany paneling, beside ranch tracts with the same 1950s and 1960s tub walls and sink supplies. A slow scupper or a failed roof membrane stains the ceiling; a failed slab line warms the floor and darkens the base; the original tub wall lets go into the hall. We dry the ceiling cavity, replace what is wet, and rebuild the paneling and the ceiling boards to the original lines, with the licensed plumber re-running a slab line overhead rather than cutting the floor.

THE MIDDLE OF TOWN

the Heritage District around Murphy Avenue, Washington Park, Ponderosa Park, Raynor

The oldest houses in the city, some from the 1900s to the 1930s with lath and plaster, wood windows and raised floors, beside 1960s and 1970s stucco tracts with pop-out sills and a water heater in the garage. The old houses leak at the roof and the wood sill into plaster; the tracts leak at the sill corner, the water heater and the dishwasher hose. We cut plaster back to sound lath or set a patch finished to the same plane, rebuild the subfloor over the joists, and keep the Heritage District look on anything that shows.

THE NORTH SIDE

Lakewood, San Miguel, Fair Oaks, the condos and townhomes toward the Bay

Compact 1950s homes with builder baths and kitchens, and 1970s and 1980s condos and townhomes where the leak is the unit upstairs, a shared stack or a balcony door. A ring on the ceiling under a neighbor's tub, a soft wall at a shared stack, a swollen base at the slider to the balcony. We dry and rebuild your side, scope it in writing with the source named for the association, and the licensed plumber the association books closes the stack.

WHAT A VISIT LOOKS LIKE

One call, priced
before we come

01Call or text photos

Call 408-916-4022 or text a photo of the stain and the roof, the bathroom or the floor nearest it. Small repairs get a range on the call and a date for the look, which from Murphy Avenue is usually soon.

02The look, the source and the scope

A technician meters the ceiling, the wall and the slab, follows the wet path to a scupper, a roof membrane, a slab line, a tub wall or a sink supply, and writes the scope: what comes out, which licensed trade closes the source, what we rebuild, the price.

03Stop it, open it, dry it

The licensed roofer or plumber we schedule stops the water; we cut out the wet drywall, ceiling boards, insulation, baseboard and subfloor, set fans and a dehumidifier, treat the framing and meter it until it reads dry.

04Rebuild and match, warranty in writing

Drywall, ceiling boards or paneling replaced in kind, texture, trim and paint matched to the room, the dust gone with us, and the one-year workmanship warranty on the invoice.

Not our lane in Sunnyvale: mold remediation and air sampling, which belong to a remediation company and a testing specialist; the leak itself, a slab line, a tub valve, a sink supply or a re-pipe, which the licensed plumber we schedule fixes; the flat-roof membrane, the scuppers and the flashing, which the licensed roofer does; the radiant loop, which is the licensed plumber's too; and any beam, joist or bearing post the water softened, which goes to the engineer before we close it.
RULES WORTH KNOWING

Licenses, Sunnyvale permits
and the condo line, in plain words

Who can do the work

Under California law a job below a set small amount may be done without a contractor license, but only when it needs no permit and no one is employed on it; a water damage rebuild, ceiling, drywall, insulation, trim and paint, is past that line before lunch. Kaminskiy Care and Repair is a licensed California contractor (License #1106209), bonded and insured, with Kaminskiy-certified, background-checked technicians. The roof is the licensed roofer's and the line the licensed plumber's; we schedule both and do the tear-out, the drying and the rebuild.

Permits

Sunnyvale publishes a sheet of work that needs no building permit, with painting and similar cosmetic work on it and a note that the list is not all-inclusive, and a separate sheet that makes replacing water supply piping a plumbing permit. The state residential code the city builds to needs no application for an ordinary repair to a structure, as long as no wall, beam or bearing post is cut and no supply, drain or waste pipe is replaced or moved. So drywall, ceiling boards, baseboard and a subfloor patch in the same place are ours with no permit; a re-run slab line is the licensed plumber's permit; a roof membrane is the licensed roofer's; and a rotted beam end or joist is a permit and an engineer. We say which at the look.

Insurance and the condo line

Most California homeowner policies pay for sudden water, a burst line, a failed water heater, an overflow, and exclude slow seepage, a roof that has leaked for three winters, and flood, which is a separate policy. A slab leak is its own question on many policies: the line itself is often not covered, the damage it did often is, and the policy decides, not us. We photograph before and after, log the meter readings, keep the cut-out material until the adjuster has seen it, and write the scope line by line; we do not adjust claims, and a public adjuster is a licensed trade of its own. In the north-side condos the inside of your unit is usually yours and the stack, the roof and the balcony the association's under the governing documents, so we put the source in writing for the board.

WHO CALLS US

One crew for every kind
of Sunnyvale water damage

Eichler and ranch ownersThe scupper stain on the ceiling boards, the warm spot on the slab, the soft wall outside the hall bath, from a crew that rebuilds to the original lines.
Condo and townhome ownersThe ceiling under the unit upstairs, dried and rebuilt on your side, scoped in writing for the association with the source named.
Landlords and property managersThe water-heater closet and the kitchen cabinet in the apartments off El Camino, dried and rebuilt between tenants with photos for the file.
Real estate agentsThe stain on the inspection report explained, the source closed by the licensed trade, dried and rebuilt before the reinspection.

Our office is downtown on Murphy Avenue. The South Bay crew starts the day at 100 S Murphy Avenue, a few minutes from any Sunnyvale street, which is why a Sunnyvale call is usually the first stop on the calendar. Call 408-916-4022, text a photo, or send the form.

OUR SUNNYVALE OFFICE100 S Murphy Ave, Suite 200K, Sunnyvale, CA 94086Monday to Friday 8 to 6:30, Saturday and Sunday 9 to 6:30408-916-4022
GOOD QUESTIONS

Water damage questions,
answered

Can't find your answer? Call 408-916-4022 and ask us anything.

Call 408-916-4022

Not ours; a remediation company does that work. We remove and treat small surface growth on drywall, ceiling boards, trim and framing as part of the rebuild, about the EPA's ten square feet or less. Larger growth, growth through the wall cavities of more than one room, a sewage source or anyone in the house with breathing trouble goes to a remediation company with containment and a written protocol, and sampling to a testing specialist. California licenses neither, so we name companies we have rebuilt behind and come back when they clear it.

Nearly always. A technician meters the ceiling, the wall and the slab, follows the wet path to its high point and matches it to what is there: a scupper or a roof membrane, a slab line, a tub wall, a sink supply, the unit upstairs. In Sunnyvale a stain that grows only when it rains is the roof; a warm floor and a dark baseboard with no rain is the slab. The scope names the source and the licensed roofer or plumber who closes it.

Yes, and on an Eichler that matters more than anywhere. Tongue-and-groove ceiling boards and mahogany panels are replaced in kind and finished to the run, drywall gets the texture matched and feathered past the cut, plaster in the Heritage District gets a patch finished to the same plane, and the paint goes corner to corner so there is no edge to find.

It depends on how much got wet and for how long. A firm stain that needs drying, sealing and paint is a short visit; a ceiling that comes down with its insulation, or a slab-edge wall with the baseboard and the paneling, is a few days with fans running between. Text a photo and you get a range on the call; after the look, a written scope with the tear-out, the drying, the licensed trade and the rebuild priced before anything starts.

Often, when the water was sudden: a burst line, a failed water heater, an overflow. A scupper that has leaked for three winters, and flood, usually are not, and a slab leak is its own clause on many policies. Your policy and your adjuster decide, not us. We give you what the claim needs, dated photos, meter readings, the cut-out material kept until the adjuster has seen it, and a scope written line by line. We do not adjust claims.

Usually nothing is cut. The original supply lines were poured into the slab, and the licensed plumber re-runs a failed line overhead through the walls and the ceiling cavity rather than breaking the floor. Our part is the wall and the ceiling that line runs through, and the baseboard, paneling and drywall the leak darkened: dried, replaced in kind and finished to the house.

Not for drywall, ceiling boards, baseboard or a subfloor patch in the same place; the city's sheet exempts cosmetic work and the state code calls that an ordinary repair. A re-run supply line is the licensed plumber's permit, a roof membrane is the licensed roofer's, and a rotted beam end or joist is a permit and an engineer. We tell you which at the look, before anything is cut.

All of Sunnyvale from Murphy Avenue, including Cherry Chase, Fairbrae, Birdland, Las Palmas, the Heritage District, Ponderosa Park, Raynor, Lakewood and San Miguel, plus Mountain View, Cupertino, Santa Clara and Los Altos. Call 408-916-4022 to confirm your address.

RATHER TYPE THAN TALK?

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LOCATIONS

Mold & Water Damage Repair near Sunnyvale

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