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ADU Builder Quotes in Santa Clarita

Building an ADU in Santa Clarita

California HCD counted 29 ADU units with building permits issued in 2025 in the City of Santa Clarita, as reported so far.

Updated Sources: California HCD

Concept of a detached backyard ADU with white stucco, cedar siding and a small garden patio
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Santa Clarita at a glance

ADU units with building permits issued in 2025, City of Santa Clarita, as reported so far
29
ADU units completed in 2025, City of Santa Clarita, as reported so far
75
Rank by ADU units permitted in 2025 among reporting Los Angeles County cities, City of Santa Clarita
43 of 79

California HCD, Housing Element Annual Progress Report (APR), Table A2 · data as of

  • Numbers from HCD and US Census public records
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What do permits say an ADU costs?

From City of LA building permits, last 12 months. Not a contract price. How we calculate this

Declared values on City of Los Angeles building permits, last 12 months. The dataset covers the City of Los Angeles only, so treat it as a regional reference for Santa Clarita. A declared value is what the permit states, not your contract price. How we calculate this.

$140,544median declared value, new ADU

Middle half of 2,004 permits Median

Every lot is different. A local contractor can price your project.

Source: LA Department of Building and Safety, Building Permits Issued 2020 to Present (data.lacity.org), permits on one- and two-family homes issued to ; fire rebuilds excluded. ZIP medians need 20+ permits.

Santa Clarita housing and ADU permit facts

Santa Clarita housing and ADU permit facts

Local numbers for Santa Clarita, each with its source and date.

Change in ADU units permitted, 2022 to 2025, City of Santa Clarita1
-32.6%
Share of housing units built before 1980, City of Santa Clarita2
30.7%
Median year structure built, City of Santa Clarita2
1987
Share of occupied housing units that are owner-occupied, City of Santa Clarita2
71.8%
Median value of owner-occupied homes, City of Santa Clarita2
$784,700
  1. 1 California HCD, Housing Element Annual Progress Report (APR), Table A2 · data as of
  2. 2 U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates · data as of
ADU units permitted in Santa Clarita, by yearEach bar is one year of building permits, as the city reported them to the state.

43rd of 79 LA County cities for ADU permits in 2025

* 2025 counts can still rise as late reports come in. Source: California HCD, Housing Element Annual Progress Report (APR), Table A2, data as of .

Planning your project

What Santa Clarita's homes mean for your ADU

Most of Santa Clarita's housing is newer: 30.7% of housing units were built before 1980, and the median year built is 1987 (Census 2020–2024). For most lots, the key ADU questions are space, setbacks and utility connections, not old systems.

Owners hold most occupied homes here: 71.8% are owner-occupied (Census 2020–2024). Many ADU projects are built by owners improving the home they live in. The median value of owner-occupied homes is $784,700 (Census 2020–2024). Use that figure only to think about budget in general terms: decide how much to put into the home relative to what it is worth.

State HCD reports that 29 ADU units had building permits issued in 2025, and 75 ADU units were completed in 2025, both as reported so far. The permit count fell 32.6% from 2022 to 2025, so avoid reading it as a firm trend.

If you plan to rent out the ADU, check the local rental rules with the city before you commit to a design.

The typical path for an ADU in Santa Clarita

The typical path for an ADU in Santa Clarita

  1. Check what your lot allows

    Ask the City of Santa Clarita what your lot allows for an ADU, including space, setbacks and utility connections. Rules can change, so confirm them before you plan.

  2. Design and plan the ADU

    A local builder can turn your goals into a layout that fits the lot. If your home is one of the older ones, note the condition of its electrical, plumbing and foundation so the plans reflect real conditions.

  3. Submit plans for plan check and permit

    The city reviews your plans before it issues a permit. Expect that corrections may be requested, and do not assume approval on a set date.

  4. Build with inspections

    Inspections happen at key stages of construction. Where new utilities tie into existing systems in an older home, expect extra checks.

  5. Final sign-off

    When inspections pass and the city signs off, the ADU is ready for use. Check the license status of any contractor with the CSLB before you sign a contract.

Common questions about ADUs in Santa Clarita

How many ADU permits does Santa Clarita issue?

State HCD reports 29 ADU units with building permits issued in 2025, as reported so far. The city ranked 43 of 79 among reporting Los Angeles County cities for that year. Late reports can still add to these counts.

Does the age of Santa Clarita homes matter for an ADU?

30.7% of housing units in Santa Clarita were built before 1980, and the median year built is 1987 (Census 2020–2024). Most homes are newer, so focus first on lot space, setbacks and utility connections. If your home is one of the older ones, ask about its electrical and plumbing early.

Should I build an ADU if I plan to rent it out?

71.8% of occupied homes in Santa Clarita are owner-occupied (Census 2020–2024). If you plan to rent out the ADU, check the local rental rules with the city before you commit.

How does the budget compare with home value?

The median value of owner-occupied homes in Santa Clarita is $784,700 (Census 2020–2024). Compare your budget with what your home is worth, and set a clear limit before you ask for a quote.

What should I ask the builder first?

Ask how the design fits your lot's space and setbacks, what the city plan check involves, and how inspections are scheduled. Check the license status of any contractor with the CSLB.

Compare ADU activity across LA County

Where LA County is building ADUs

ADU units permitted in 2025, city by city. Select a city to open its guide.

Map of LA County cities shaded by ADU units permitted in 2025, with Santa Clarita outlinedAgoura Hills: 17 ADU units permitted in 2025Alhambra: 102 ADU units permitted in 2025Arcadia: 98 ADU units permitted in 2025Artesia: 39 ADU units permitted in 2025Azusa: no HCD reportBaldwin Park: 119 ADU units permitted in 2025Bell: 25 ADU units permitted in 2025Bell Gardens: 26 ADU units permitted in 2025Bellflower: 18 ADU units permitted in 2025Beverly Hills: 31 ADU units permitted in 2025Bradbury: no HCD reportBurbank: 241 ADU units permitted in 2025Calabasas: 15 ADU units permitted in 2025Carson: 41 ADU units permitted in 2025Cerritos: 12 ADU units permitted in 2025Claremont: 23 ADU units permitted in 2025Commerce: no HCD reportCompton: no HCD reportCovina: 34 ADU units permitted in 2025Cudahy: 24 ADU units permitted in 2025Culver City: 83 ADU units permitted in 2025Diamond Bar: 50 ADU units permitted in 2025Downey: 146 ADU units permitted in 2025Duarte: 23 ADU units permitted in 2025El Monte: 107 ADU units permitted in 2025El Segundo: 25 ADU units permitted in 2025Gardena: 52 ADU units permitted in 2025Glendale: 371 ADU units permitted in 2025Glendora: 57 ADU units permitted in 2025Hawaiian Gardens: 11 ADU units permitted in 2025Hawthorne: 76 ADU units permitted in 2025Hermosa Beach: 11 ADU units permitted in 2025Hidden Hills: no HCD reportHuntington Park: 45 ADU units permitted in 2025Industry: no HCD reportInglewood: 147 ADU units permitted in 2025Irwindale: no HCD reportLa Canada Flintridge: 30 ADU units permitted in 2025La Habra Heights: no HCD reportLa Mirada: 23 ADU units permitted in 2025La Puente: 28 ADU units permitted in 2025La Verne: 22 ADU units permitted in 2025Lakewood: 99 ADU units permitted in 2025Lancaster: 209 ADU units permitted in 2025Lawndale: no HCD reportLomita: 7 ADU units permitted in 2025Long Beach: 644 ADU units permitted in 2025Los Angeles: 7,446 ADU units permitted in 2025Lynwood: no HCD reportMalibu: 5 ADU units permitted in 2025Manhattan Beach: 24 ADU units permitted in 2025Maywood: no HCD reportMonrovia: 58 ADU units permitted in 2025Montebello: 61 ADU units permitted in 2025Monterey Park: 78 ADU units permitted in 2025Norwalk: 119 ADU units permitted in 2025Palmdale: 68 ADU units permitted in 2025Palos Verdes Estates: 20 ADU units permitted in 2025Paramount: 57 ADU units permitted in 2025Pasadena: 222 ADU units permitted in 2025Pico Rivera: 96 ADU units permitted in 2025Pomona: no HCD reportRancho Palos Verdes: 16 ADU units permitted in 2025Redondo Beach: 25 ADU units permitted in 2025Rolling Hills: no HCD reportRolling Hills Estates: 5 ADU units permitted in 2025Rosemead: 136 ADU units permitted in 2025San Dimas: 30 ADU units permitted in 2025San Fernando: 40 ADU units permitted in 2025San Gabriel: 54 ADU units permitted in 2025San Marino: 14 ADU units permitted in 2025Santa Clarita: 29 ADU units permitted in 2025Santa Fe Springs: 15 ADU units permitted in 2025Santa Monica: 143 ADU units permitted in 2025Sierra Madre: 26 ADU units permitted in 2025Signal Hill: 8 ADU units permitted in 2025South El Monte: 22 ADU units permitted in 2025South Gate: 154 ADU units permitted in 2025South Pasadena: 26 ADU units permitted in 2025Temple City: 69 ADU units permitted in 2025Torrance: 89 ADU units permitted in 2025Vernon: no HCD reportWalnut: 36 ADU units permitted in 2025West Covina: no HCD reportWest Hollywood: 36 ADU units permitted in 2025Westlake Village: no HCD reportWhittier: 86 ADU units permitted in 2025
ADU units permitted, 2025
  • 0–21
  • 22–28
  • 29–56
  • 57–99
  • 100+
  • No report
  • Unincorporated

Most ADU permits in 2025

  1. 1Los Angeles7,446
  2. 2Long Beach644
  3. 3Glendale371
  4. 4Burbank241
  5. 5Pasadena222
  6. 6Lancaster209
  7. 7South Gate154
  8. 8Inglewood147
  9. 9Downey146
  10. 10Santa Monica143

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Permits: California HCD, Housing Element Annual Progress Report (APR), Table A2, data as of ; 2025 counts can still rise. Boundaries: Los Angeles County, City and Unincorporated Boundaries (Legal) (mainland only (islands omitted). simplified to about 300 m.)

Recent work by a contractor in our network

Photos from the contractor's own projects, used with permission. Captions name the type of work.

  • Dark-tiled bathroom with a floating vanity and frameless glass
    Bathroom in an ADU
  • Living area in a new unit with a sofa and dining table
    Addition / ADU interior
  • Living room of a new unit with neutral furniture
    Addition / ADU interior
  • Bathroom vanity with a backlit mirror in a new unit
    Addition / ADU bathroom

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Matched to your project. We check the project type and ZIP first. Up to three local contractors may contact you, and we email you each one's name.

  • Dark-tiled bathroom with a floating vanity and frameless glass
  • Living area in a new unit with a sofa and dining table
  • Living room of a new unit with neutral furniture

Works in Santa Clarita

  • Santa Clarita
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Service areas as listed by the contractor ()

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