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Unincorporated community · Contra Costa County, California

Home Improvement Contractors in Kensington, CA

Kensington is an unincorporated community in Contra Costa County; building permits are issued by the county. Every trade we cover, for homes in Kensington. Tell us the project once and we connect you with licensed, insured contractors for it through one national line - and you compare written scopes. The median Kensington home dates from 1945, so most jobs start with what is already there.

  • Licensed and insured contractors only
  • Written scope before work starts
  • No obligation on quotes
  • Local permit knowledge
Sourced local data

About homes in Kensington

Census and NOAA figures for the community of Kensington in Contra Costa County, not the metro, with a source for each.

1945Median year built1U.S. 1980
94%Built before 198011% built since 2010
1945Owner-occupied median year built1rentals 1949
96%Detached single-family10% in 5+ unit buildings
87%Owner-occupied156% statewide
$1,539kMedian home value1California median $735k

The median home in the community of Kensington was built in 1945, older than the U.S. median of 1980 and older than the California median of 1976. That is older than the Contra Costa County median of 1978.1 Older housing stock means a contractor's first job is finding what is behind the finish - wiring, plumbing and roof decking - before a price is final. The stock is old by national standards: 94% of Kensington's housing units were built before 1980 (U.S. 50%), and only 1% since 2010. The largest single share, 47%, dates from 1940-1959. That makes it a newer stock than Contra Costa County as a whole (53% built before 1980).1 On houses from the 1940s and 1950s, contractors routinely check for original cast-iron drains, two-wire electrical and undersized panels before pricing a remodel.

Owner-occupied homes in Kensington are older than rentals: a median build year of 1945 against 1949.1 Where owner-occupied homes skew older, a repair-versus-replace conversation is the usual starting point rather than a like-for-like swap. Housing in Kensington is mostly detached single-family: 96% of units, with 0% in buildings of five or more units.1 A mostly detached stock means the full range of exterior work applies: roofs, garage doors, chimneys and backyard units.

Home ownership is the norm in Kensington: 87% of occupied homes are owner-occupied, above the California share of 56%.1 The median owner-occupied home in Kensington is valued at $1,539,000 (ACS), above the California median of $734,700. Within Contra Costa County the median is $866,800, so Kensington sits above it.1 Home values above the state median tend to support fuller scopes; the written scope should still separate must-do from nice-to-have. Freezing nights are rare: the nearest NOAA station (San Francisco Dwtn) averages 0 nights a year at or below 32°F.2,3 With few freezing nights, water and sun rather than ice are what exterior details are built against.

Hot days are uncommon: about 3 days a year reach 90°F.2,3 Annual precipitation is moderate, about 23 inches.2,3 Heating dominates the year: about 2,781 heating degree days against 121 cooling degree days (base 65°F).2,3 In a heating-led climate, insulation and air sealing carry most of the energy-code weight for any work that opens the envelope.

Kensington is about 12 miles from the ocean or Gulf coast in a straight line.4,5 Proximity to salt air makes fastener grade and corrosion protection part of every exterior quote. Kensington sits in IECC climate zone 3B (Hot-Dry).6 Building permits in Kensington are normally issued by the county, as this is an unincorporated community.7,8 As an unincorporated community, permits and inspections run through the county.

Share of Kensington housing units by year built
Before 194038.6%
1940-195947.1%
1960-19798.3%
1980-19995.1%
2000-20090%
2010 or later0.9%
Sources and notes (8)
  1. U.S. Census Bureau, American Community Survey 5-year estimates (ACS 2020-2024 5-year (released 2026-01))
  2. NOAA NCEI U.S. Climate Normals, nearest station (1991-2020 normals (published 2021))
  3. NOAA NCEI normals station inventory (1991-2020)
  4. U.S. Census Bureau Gazetteer files (2025)
  5. U.S. Census Bureau TIGER/Line coastline (2025)
  6. Guide to Determining Climate Zones by County: Building America and IECC 2021 Updates (PNNL-33270) (September 2022 (IECC 2021 county map))
  7. U.S. Census Bureau population estimates (Vintage 2024)
  8. U.S. Census Bureau geographic code files (2020)
  9. Climate figures are for NOAA station San Francisco Dwtn, 12.1 miles from the place center; housing figures are ACS ACS 2020-2024 5-year with 90% margins of error in the source tables.

Get a free Kensington quote

Written scope, no obligation. Call now or email and we will get back to you.

Service area

Kensington and nearby

Requests for Kensington and the surrounding California area go through our national line. Call (844) 624-3161 with the address and the project and we confirm whether we have a contractor who can take it on.

Nearest places with a page

Straight-line distances between place centers, not drive times.

Single-story cream stucco ranch house with a gray shingle roof, drought-tolerant plantings and a young olive tree.

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Questions

Kensington questions

How much does home remodeling cost in Kensington, CA?

Most home remodeling projects in Kensington, CA land between $25,550 and $134,900, depending on scope, access and material grade. That is an estimated range for planning, not a quote - call (844) 624-3161 and we will scope your job properly.

Do I need drawings before calling?

No. If you have them, good - if not, we start from what you want to change and work back to what the house allows.

How old are the homes in Kensington?

The median home in the community of Kensington was built in 1945, older than the U.S. median of 1980 and older than the California median of 1976. That is older than the Contra Costa County median of 1978. The stock is old by national standards: 94% of Kensington's housing units were built before 1980 (U.S. 50%), and only 1% since 2010. The largest single share, 47%, dates from 1940-1959. That makes it a newer stock than Contra Costa County as a whole (53% built before 1980). Those are Census figures for the whole housing stock, including apartments, not a statement about any one house.

Who issues building permits in Kensington?

Building permits in Kensington are normally issued by the county, as this is an unincorporated community. Whether a specific job needs one is decided by that office; the contractor confirms it before work starts.

Get a free Kensington quote

Written scope, no obligation. Call now or email and we will get back to you.