Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Roofing Across Kensington
Roof replacement in Kensington typically runs $8,000-$20,000, while roof repair lands between $400 and $1,800 for most jobs. Those numbers assume a standard roof, but Kensington homes rarely hand you a standard roof. The steep hillside lots, the fog that sits on the ridge, and the 1920s-to-1950s framing underneath all shape what a roofing quote actually costs here. The county permitting process does too, because Kensington is unincorporated Contra Costa County, which routes every permit through Martinez instead of a local counter. We know that before we walk your roof. Call Barrett & Sons Construction at (877) 610-1318 and we’ll price your roof with the hillside in mind, not as a flatland guess.
Why Barrett & Sons Construction Is Kensington’s Preferred Roofing Company
Tom Barrett founded this company in 1998, and he still answers his own phone. His sons run the roofing crews, and they work Kensington regularly, which means the crew that shows up knows two things before the ladder comes off the truck: the permit goes through Contra Costa County in Martinez, and the roof deck is probably hiding something. That’s not pessimism. It’s experience with pre-war redwood framing and the way Kensington fog rots it on the uphill side.
We publish Tom’s name, his license number, and his address. Look any of it up before you sign anything. Our Kensington customers have given us a strong local reputation over the years, and most of what they tell us starts with some version of “wish I’d called you first,” usually right after a national outfit handed them a phone quote that didn’t survive contact with a Kensington hillside. Our crews are background-checked and uniformed, we show up when we say we will, and we stand behind the work with a written 90-Day Done Right Promise: if it’s not done right, one call brings Tom back. We serve the whole Kensington area, from the flats near Arlington Avenue up to the ridgeline streets off Coventry Road.
Our Roofing Services in Kensington
Roof Replacement & Installation
Most Kensington homes built between the 1920s and 1950s are at or past the end of their original roof’s service life. A full replacement here isn’t a tear-off-and-nail thing. The existing deck is often skip sheathing with gaps that old shingles covered just fine, but once a permit is pulled through Contra Costa County, the assembly has to meet current WUI standards for the high fire hazard zone nearly all of Kensington sits in. That means solid plywood or OSB sheathing, ember-resistant venting, and a Class A assembly rated for the hills. We price that reality into the first quote, not as a surprise. Roof replacement in Kensington runs $8,000-$20,000 depending on deck condition, steepness, and the roofing system you choose. Every job gets a written scope, written allowances, and a written change order before any additional work begins.

Roof Repair
Small leaks in Kensington have a habit of pointing uphill. Fog trapped against the ridgeline keeps the north and west roof faces damp for weeks longer than the flatlands below, which means what looks like a missing shingle near the gutter is often a rotted section of redwood sheathing higher up the slope. We diagnose the full path of the water before we patch anything. Roof repair in Kensington typically runs $400-$1,800. If a repair turns into something larger mid-job, you get a written change order with a price before we cut a single additional board. Nobody likes a surprise invoice tied to a roof they thought was a quick fix.

Metal Roofing
Standing seam metal is a smart fit for Kensington’s fire hazard zone. It’s a non-combustible Class A surface, it sheds embers far better than any shingle, and on a roof that’s already steep, the clean seam lines look like they belonged there from the start. Metal roof installation in Kensington runs $15,000-$40,000. The range is wide because a 1930s Tudor on a 30-degree slope is a different job than a 1950s rancher on a gentle pitch. Hidden fasteners, custom trim, and the underlayment system all move the number. We’ll walk you through each line item before you sign.

Tile Roofing
Barrel tile roofs are common in Kensington’s Mediterranean revival homes, and when they fail it’s usually not the tile itself. The felt underlayment wears out, or the flashing at a valley or chimney gives way, or a hillside shifts just enough to crack a tile course. Tile roof repair in Kensington runs $600-$2,500 for typical fixes. We stock common barrel tile profiles locally so we’re not waiting on a special order while a tarp sits on your roof. GAF and CertainTeed are our standard roofing brands, materials you can look up and verify yourself.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
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.
Trusted Brands We Service in Kensington
Our Roofing crew installs GAF and CertainTeed, two of the most widely tracked roofing brands in the industry. That matters in Kensington because you can verify the assembly rating, the fire classification, and the material warranty without taking our word for anything. We keep common GAF shingle colors and CertainTeed underlayment stocked for faster turnarounds on Kensington repairs, and we’ll include the exact product names and model numbers in your written estimate. No mystery brands off a van, and no “equivalent” substitutions without a written change order.
Common Roofing Problems We See in Kensington Homes
- Fog-trapped moisture rotting the uphill roof face. Kensington sits in the East Bay hills where coastal fog lingers against the ridge. The north and west roof faces stay damp far longer than flatland roofs in El Cerrito or Richmond, and redwood sheathing from the 1920s and 1930s is especially vulnerable. By the time a leak stains the ceiling, the rot is usually two or three feet wide upslope.
- Original skip sheathing that fails WUI inspection. Homes built before about 1960 often have skip sheathing: boards spaced apart, with gaps between them. That was fine when the standard was wood shake and no ember rules. Today, Contra Costa County applies WUI ember-resistance standards to almost all of Kensington, and skip sheathing won’t pass. You only find out when the permit triggers the upgrade.
- Hillside runoff overwhelming old gutters. Steep roofs shed water fast. When gutters rust through or pull loose, water concentrates at the downspout and saturates the soil behind retaining walls. Over years, that saturated soil moves, the wall leans, and the flashing at the roof-to-wall intersection pulls apart. We see this chain reaction across Kensington’s hillside streets regularly.
- Failed flashing at sidewalls and chimneys. Kensington homes with original brick chimneys and stucco sidewalls are prone to flashing failure where the roof meets vertical surfaces. Differential movement, seismic settling, and decades of wet-dry cycles break the seal. The roof looks fine from the street; the leak shows up in a bedroom ceiling three feet inside the wall line.
Pricing for Roofing in Kensington, CA
Here’s what roofing work runs in Kensington, based on the homes we actually work on here:
| Service | Typical Kensington Price Range |
|---|---|
| Roof Replacement | $8,000 - $20,000 |
| Roof Repair | $400 - $1,800 |
| Tile Roof Repair | $600 - $2,500 |
| Metal Roof Installation | $15,000 - $40,000 |
What moves the number on a Kensington roof? The deck condition, mainly. If the original skip sheathing has to be completely re-sheathed for WUI compliance, that’s a meaningful add. The pitch of the roof matters too: a steep hillside roof requires more safety equipment, more time, and more care. Underlayment choice, ventilation upgrades, gutters, and whether the roof has valleys, skylights, or chimneys all carry line items of their own. You’ll see every one of them in the written estimate before work starts. Call (877) 610-1318 for a free roofing estimate in Kensington. We’ll walk the roof, photograph what we find, and give you a real number, not a phone promise.
We Also Serve Cities Near Kensington
While most of our roofing work keeps us in the Kensington hills, we also serve neighboring communities including El Cerrito, Albany, Richmond, and Berkeley. If you’re across the line in any of those areas, the same county permitting realities and the same written pricing apply. Call us at (877) 610-1318 and we’ll let you know our current schedule for your street.
Serving Kensington, CA - Our Local Coverage Area
We’re based in the Kensington area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Roofing in Kensington
Kensington is unincorporated Contra Costa County, so there is no City of Kensington building department at all. Roof permits go through the Contra Costa County Building Department in Martinez. We pull the permit on your behalf for every eligible job. Faster if the paperwork is clean, slower if the county asks for something extra, but we handle it either way.
Almost never. The original skip sheathing on pre-war Kensington roofs has gaps that fail current WUI ember-intrusion rules, and the county enforces those rules in the fire hazard zone. A re-roof will almost certainly require solid plywood or OSB sheathing over the old deck. We’ll flag it at the estimate stage, price it as a written line item, and pull the permit through Contra Costa County before a single shingle moves. Call (877) 610-1318 for an exact quote: estimates are free.
The fog that hangs against the Kensington ridge keeps the uphill roof faces damp for weeks longer than roofs in the flatlands of El Cerrito or Richmond. Combined with original redwood sheathing that was never designed for that kind of sustained moisture, the uphill side rots long before the downhill side even looks worn. When we tear off a Kensington roof, the uphill deck is nearly always the worst section.
Usually not by itself. A roof permit triggers code compliance on the roof assembly, not the foundation. But if we open the roof and find structural framing that has rotted through or shifted, that becomes part of the job, and we’d issue a written change order before doing anything structural. We don’t pretend a roof is separate from the house under it. Call (877) 610-1318 if you’re unsure what your home might trigger.
We document it, we price it, and we hand you a written change order before we touch the extra work. No verbal “trust me” and no end-of-job invoice that’s 40% higher than the estimate. On a 1930s Tudor off Coventry Road, we found original skip sheathing with gaps up to two inches and no solid decking: a condition that fails WUI ember standards. We photographed it, issued a change order for full plywood re-sheathing, and pulled the permit through Contra Costa County before closing the roof, so the final inspection sign-off matched the Class A assembly the hillside required. That’s how every Barrett & Sons roof goes: scope in writing, allowances in writing, change orders in writing. Call (877) 610-1318 for a free estimate.
Written by Tom Barrett, Owner at Barrett & Sons Construction, founded 1998 and proudly serving Kensington and the surrounding East Bay communities.







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