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Building an ADU in Palmdale, CA

Building an ADU in Palmdale

68 ADU units had building permits issued in 2025 so far, as reported to the state; 19.5% of Palmdale housing units were built before 1980 (2020 to 2024).

Updated Sources: California HCD

Concept of a detached backyard ADU with white stucco, cedar siding and a small garden patio
Home inspiration · Concept image

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Palmdale at a glance

ADU units with building permits issued in 2025 so far, Palmdale
68
ADU units completed (certificate of occupancy) in 2025 so far, Palmdale
46
Rank by ADU units permitted in 2025 among 79 reporting Los Angeles County cities, Palmdale
25 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 Palmdale. 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.

Palmdale ADU permits and local housing facts

Palmdale ADU permits and local housing facts

Local numbers for Palmdale, each with its source and date.

Change in ADU units permitted, 2022 to 2025, Palmdale1
-8.1%
Share of Palmdale housing units built before 1980 (2020 to 2024)2
19.5%
Median year structure built, Palmdale (2020 to 2024)2
1989
Share of occupied Palmdale housing units that are owner-occupied (2020 to 2024)2
66.2%
Median value of owner-occupied homes, Palmdale (2020 to 2024)2
$471,000
  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 Palmdale, by yearEach bar is one year of building permits, as the city reported them to the state.

25th 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 Palmdale's homes mean for your ADU

In Palmdale, 68 ADU units had building permits issued in 2025 so far, and 19.5% of housing units were built before 1980 (2020 to 2024 Census estimates). For most lots, the main planning questions are space, setbacks and utility connections, not old systems.

Most Palmdale homes are newer, with a median year built of 1989. Start by confirming what your lot allows with the city, then measure the space for the unit and mark where water, sewer, gas and electric lines can connect.

Owner-occupied homes make up 66.2% of occupied units in Palmdale, so most ADU projects serve people improving the home they live in. The median value of owner-occupied homes is $471,000. Use that figure to frame your budget in general terms: spend in proportion to what the home is worth, and plan for the work your lot needs.

If you plan to rent the ADU, note that the change in ADU units permitted from 2022 to 2025 is -8.1%, so check current local conditions before you commit.

The typical path for an ADU in Palmdale

The typical path for an ADU in Palmdale

  1. Check what your lot allows

    Confirm what your lot allows with the city before you spend on design. Ask about setbacks, lot coverage, parking and utility connections for your address.

  2. Design and plans

    Work with your builder to create a layout, site plan and construction drawings that show the unit, its entrance and where utilities connect.

  3. Plan check and permit

    Submit your plans to the city for plan check. Expect comments to fix before the city issues a permit. If your home is older, include notes on existing wiring, plumbing and framing.

  4. Construction and inspections

    Build the unit with inspections at key stages, such as foundation, framing, rough electrical and plumbing, and insulation. Keep your permit and inspection records together.

  5. Final sign-off

    After the last inspection, the city signs off on the project. Keep the final documents for your records and for any future sale or refinance.

Questions about ADUs in Palmdale

How many ADU permits did Palmdale issue in 2025?

68 ADU units had building permits issued in 2025 as reported so far, and 46 ADU units were completed in 2025 as reported so far. Palmdale ranks 25 of 79 reporting Los Angeles County cities for ADU units permitted in 2025. These counts may still rise as late reports arrive.

Does the age of Palmdale homes affect my ADU project?

19.5% of Palmdale housing units were built before 1980, and the median year built is 1989 (2020 to 2024 Census estimates). Most lots are newer, so space, setbacks and utility connections usually matter more. If your home is in the older part of the stock, ask your builder to check its wiring, plumbing and framing early.

What does the owner-occupied share mean for me?

66.2% of occupied Palmdale homes are owner-occupied, so most ADU projects are for people improving the home they live in. If you plan to rent the ADU, check the city's current rules for rentals before you design the unit.

How should I think about budget compared with home value?

The median value of owner-occupied homes in Palmdale is $471,000 (2020 to 2024 Census estimates). Set your budget as a share of your home's value and think about how much the project adds to the home, not just what it costs.

How can I check a contractor's license?

The CSLB (Contractors State License Board) lets you look up any contractor's license status. Ask for the license number and check it before you sign anything.

What happens after I send my request?

Your request goes to one local builder who will review your lot details and project ideas, then reply with an estimate. You can ask questions before you decide.

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 Palmdale 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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Who gets your request

Your local match

Your project · works in Los Angeles County

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

Service areas

  • Los Angeles
  • Bel Air
  • Brentwood
  • Hollywood
  • +36 more

Service areas as listed by the contractor ()

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