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Single Family Dwelling Permit in Unincorporated Doña Ana County, New Mexico

Required for new single-family dwelling construction in unincorporated Doña Ana County. Issued directly by the Doña Ana County Community Development Department — Building Services Division (not the City of Las Cruces) for properties located in the unincorporated county. The county's Single Family Dwelling Permit Application is the official application bundle and includes a published 15-business-day review commitment.

Verified 2026-07-05 · Source

When you need this permit

  • New single-family dwelling construction
  • Recorded Proof of Ownership (Warranty Deed or Real Estate Contract) — copy obtainable at the County Clerk's Office, Room 200
  • Proof Record Card from the County Assessor's Office, Room 220
  • Proof of septic tank permit (NMED, (575) 288-2050) or a ready-willing-and-able letter from a sewer provider; utility bills are not accepted as proof
  • Proof of a domestic well permit (State Engineer's Office, (575) 524-6161) or a ready-willing-and-able letter from a water provider; utility bills are not accepted as proof
  • If more than one dwelling is proposed on the property, a septic permit is required for each dwelling
  • SWPPP and NOI required for projects in a platted subdivision, or for projects outside a subdivision on a parcel exceeding one acre
  • Driveway permit ($20.00) required if accessing a county road; a permit from NMDOT may be required if accessing a state road
  • Homeowner-pulled permits additionally require a completed 'Instructions for Permit' form and a 'Responsibilities and Liabilities Acknowledgement'
  • Electrical, plumbing, and mechanical permits are obtained separately, AFTER issuance of the building permit, by the licensed tradesman for each trade

Required documents

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Fee schedule

Residential Building Permit Fee — new single-family dwellings and duplexesDoña Ana County Building Permit Fee Schedule (Section I, Permit Fees). Confirmed again on the county's Permit Requirements page and the Single Family Dwelling Permit Application ('Fee – Permit fee is based on $0.20 per total sq. ft.').
$0.20 per total square foot of floor area (measured to the outside walls; to the outside edge of the floor/roof-line for a carport, covered porch, or similar structure)
Plan Review / Application PaymentDoña Ana County Building Permit Fee Schedule, Plan Review Fees section, and the Permit Requirements page
25% of the assessed permit fee due at application (non-refundable); remaining 75% due prior to permit issuance
Driveway Access Permit (county road access)Single Family Dwelling Permit Application, Engineering Requirements section
$20.00
General Construction Valuation Fee Table (applies to construction types not otherwise itemized)Doña Ana County Building Permit Fee Schedule, 'Other Construction' valuation scale
$45 for $1.00–$500; $45 + $1.00 per additional $100 (or fraction) up to $2,000; $60 + $10.00 per additional $1,000 (or fraction) from $2,001–$25,000; $290 + $8.00 per additional $1,000 (or fraction) from $25,001–$50,000; $490 + $6.00 per additional $1,000 (or fraction) from $50,001–$100,000; $790 + $5.00 per additional $1,000 (or fraction) above $100,000

Review timeline

Plan reviewUnincorporated Doña Ana County’s published plan-review target
15–15 business days

How long did your Single Family Dwelling Permit permit actually take in Unincorporated Doña Ana County?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Plumbing Rough-In / Foundation

    1st phase: all drain and water lines installed before the slab is placed; foundation inspection complete with compaction and footings verified

  2. 2

    Plumbing Top Out / HVAC Rough-In / Electrical Rough-In / Sheathing

    2nd phase: all vents extended through roof with water/gas piping installed (plumbing); ductwork with insulation, gas vents through roof, gas piping and dryer vent (HVAC); panel and all wire boxes for receptacles/switches/cable/phone/lighting (electrical); sheathing inspection once exterior sheathing is installed. All 2nd-phase inspections must be approved before scheduling Frame and Lath.

  3. 3

    Frame / Lath

    Framing and lath inspections, performed after all 1st- and 2nd-phase inspections are approved

  4. 4

    Insulation

    3rd phase: insulation inspection, or an insulation certificate from a licensed installer may be submitted instead

  5. 5

    Plumbing Final / HVAC Final / Electrical Final

    4th phase: all fixtures/water heater/gas piping tested and drains working (plumbing); all heating/cooling equipment installed with registers in place (HVAC); meter installed with all receptacles/switches/lighting working (electrical). All 4th-phase inspections must be approved before scheduling the Building Final.

  6. 6

    Building Final Inspection

    Final structural/building inspection, scheduled only after all trade finals are approved

See the full Unincorporated Doña Ana County inspection guide — scheduling & re-inspection fees →

Tips

  • The county publishes a specific 15-business-day review commitment for the Single Family Dwelling Permit — one of the more concrete New Mexico county-level SLAs found in this corpus, and notably longer than the City of Las Cruces's 3-business-day standard review for the same permit type next door.
  • Electrical, plumbing, and mechanical work each require a SEPARATE permit obtained only AFTER the building permit is issued, and only by a New Mexico-licensed tradesman for that trade.
  • Utility bills are explicitly NOT accepted as proof of water or sewer service — bring the actual septic/well permit or a ready-willing-and-able letter from the provider.
  • 25% of the fee is due at application and is non-refundable, even if the application is later denied or withdrawn.
  • Homeowner (owner-builder) permits require two additional signed forms not needed for contractor-pulled permits: 'Instructions for Permit' and 'Responsibilities and Liabilities Acknowledgement.' Owner-builder

Frequently asked questions

Unincorporated Doña Ana County requires a single family dwelling permit for: New single-family dwelling construction; Recorded Proof of Ownership (Warranty Deed or Real Estate Contract) — copy obtainable at the County Clerk's Office, Room 200; Proof Record Card from the County Assessor's Office, Room 220; Proof of septic tank permit (NMED, (575) 288-2050) or a ready-willing-and-able letter from a sewer provider; utility bills are not accepted as proof; Proof of a domestic well permit (State Engineer's Office, (575) 524-6161) or a ready-willing-and-able letter from a water provider; utility bills are not accepted as proof; If more than one dwelling is proposed on the property, a septic permit is required for each dwelling; SWPPP and NOI required for projects in a platted subdivision, or for projects outside a subdivision on a parcel exceeding one acre; Driveway permit ($20.00) required if accessing a county road; a permit from NMDOT may be required if accessing a state road; Homeowner-pulled permits additionally require a completed 'Instructions for Permit' form and a 'Responsibilities and Liabilities Acknowledgement'; Electrical, plumbing, and mechanical permits are obtained separately, AFTER issuance of the building permit, by the licensed tradesman for each trade. If your project isn't listed, confirm with Doña Ana County Community Development Department — Building Services Division at (575) 647-7350; Fax (575) 525-6131; TDD (575) 525-5951 before starting work.

$0.20 per total square foot of floor area for new single-family dwellings and duplexes (including garage and porches), per the county's Building Permit Fee Schedule. 25% is due at application (non-refundable) and the remaining 75% before issuance.

The county's Single Family Dwelling Permit Application publishes a 15-business-day review process after payment is received, during which the application is routed to the Flood Commission, Planning, Addressing, Utilities, Building Services, and Engineering Department.

You'll need: Single Family Dwelling Permit Application; Truss Layout/Specifications; 2021 RESCheck Energy Certificate; Proof Record Card; Recorded Proof of Ownership; Septic or Sewer Documentation; Water Service Documentation. Depending on your project, Unincorporated Doña Ana County may also ask for: SWPPP and NOI; Driveway Permit. See the required-documents checklist on this page for details on each.

Unincorporated Doña Ana County requires 6 inspection(s) for a single family dwelling permit, in order: Plumbing Rough-In / Foundation, Plumbing Top Out / HVAC Rough-In / Electrical Rough-In / Sheathing, Frame / Lath, Insulation, Plumbing Final / HVAC Final / Electrical Final, Building Final Inspection. Schedule each through Doña Ana County Community Development Department — Building Services Division ((575) 647-7350; Fax (575) 525-6131; TDD (575) 525-5951).

Apply through Doña Ana County Community Development Department — Building Services Division at 845 N. Motel Blvd., Room 150, Las Cruces, NM 88007. Phone: (575) 647-7350; Fax (575) 525-6131; TDD (575) 525-5951, email: buildingservices@donaana.gov. Office hours: County administrative offices open at 8:00 AM (confirmed via the county's own delayed-opening notice stating a 2-hour delay resumes 'normal operations' at 10 a.m., i.e. normal opening is 8:00 AM); the Building Services Division's own site does not publish a distinct closing time or Building-Services-specific hours separate from general county office hours, and no further closing-time citation could be independently confirmed after checking the department's own pages, the county homepage, and the general department directory.. Official information: https://www.donaana.gov/departments/community_services/building_services/permit_requirements.php.

Unincorporated Doña Ana County, New Mexico has adopted: New Mexico is a statewide-minimum-code state under the Construction Industries Licensing Act (NMSA 1978 § 60-13-44(E)): 'All political subdivisions of the state are subject to the provisions of codes adopted and approved under the Construction Industries Licensing Act. Such codes constitute a minimum requirement for the codes of political subdivisions.' A county or municipality may become its own code-enforcement authority (operate independently of the state Construction Industries Division field office model) if it employs a certified building official and has adopted at least the current state minimum code standards (NMSA 1978 § 60-13-41(D)-(F)). GOVERNANCE MODEL CONFIRMED: unlike some New Mexico counties that route permits through the state CID field office, Doña Ana County SELF-ADMINISTERS for all trades — Building, Electrical, Plumbing, and Mechanical alike — through its own Community Development Department / Building Services Division, headed by Sean Vick, the Doña Ana County Certified Building Official/Assistant Director (per the department's own 'Welcome to Building Services' page). The division also employs its own Certified Building Inspector (Jesse Gomez), Certified Electrical Inspectors (Riley Roman, Joel Candelaria), and Certified Plumbing/Mechanical Inspectors (Candido Jasso and David Murillo) — confirming direct county-level review and inspection for every trade, not CID field-office enforcement.; 2021 International Building Code (IBC) — per the Doña Ana County Building Services 'Building Codes' page (donaana.gov); 2021 International Residential Code (IRC) — per the Doña Ana County Building Services 'Building Codes' page; 2021 International Energy Conservation Code (IECC) — per the Doña Ana County Building Services 'Building Codes' page; the county's own Single Family Dwelling Permit Application requires a signed '2021 RESCheck' Energy Certificate, confirming the 2021 IECC edition is the one actually enforced in practice; 2021 Uniform Mechanical Code (IAPMO) — per the Doña Ana County Building Services 'Building Codes' page; 2021 Uniform Plumbing Code (IAPMO) — per the Doña Ana County Building Services 'Building Codes' page; 2021 International Existing Building Code (IEBC) — per the Doña Ana County Building Services 'Building Codes' page; 2017 ICC/ANSI A117.1 (Accessible and Usable Buildings and Facilities) — per the Doña Ana County Building Services 'Building Codes' page; 2020 National Electrical Code (NEC) — per the Doña Ana County Building Services 'Building Codes' page (this matches the current 14.10.4 NMAC statewide adoption also enforced in the City of Las Cruces; NOTE: the county's own Reroof & Reroof/Overlay Permit Requirements handout still lists an older code slate — '2015 IRC; 2015 NMRBC; 2009 Energy Conservation Code; 2015 Uniform Plumbing Code; 2015 New Mexico Plumbing Code; 2012 Swimming Pool, Spa, Hot Tub Code; 2015 Uniform Mechanical Code; 2015 New Mexico Mechanical Code; 2012 New Mexico Solar Energy Code; 2017 NEC; 2017 New Mexico Electrical Code' — this appears to be a stale, unrevised handout PDF; the county's live, currently-published Building Codes page (2021 IBC/IRC/IECC/UMC/UPC family, 2020 NEC) is treated as the authoritative current adoption for this entry); 2021 International Fire Code (IFC) — per the Doña Ana County Building Services 'Building Codes' page; 2012 Uniform Swimming Pool, Spa and Hot Tub Code — per the Doña Ana County Building Services 'Building Codes' page; Doña Ana County makes clear it cannot host these copyrighted code texts online and directs the public to review physical copies in person at the Building Services Dept., 845 N. Motel Blvd., Las Cruces, NM, or to consult the New Mexico Regulation and Licensing Department (RLD) Construction Industries Division's own current-adoption page for the statewide baseline (rld.nm.gov/construction-industries/rules-laws-and-building-codes).. Local amendments apply — see the Unincorporated Doña Ana County overview page for the full list.

Doña Ana County self-administers building, electrical, plumbing, and mechanical permitting through its own Community Development Department — Building Services Division, headed by a County Certified Building Official (Sean Vick) with the county's own certified inspectors for each trade — rather than routing permits through a state CID field office.

Sources & verification

Verified against official sources. Last reviewed 2026-07-05.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Unincorporated Doña Ana County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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