An ADU builder in Albuquerque is a licensed contractor who designs and constructs accessory dwelling units — detached backyard units, garage conversions, attached additions, and junior ADUs (JADUs). Because an ADU is a complete second dwelling, the builder coordinates foundation, framing, plumbing, electrical, and HVAC work and pulls it through Albuquerque's permit process and utility connections. Not every general contractor has built one, so the right builder is one with ADU-specific experience in New Mexico.
What ADU Builders Cost in Albuquerque [13]
Based on our Albuquerque cost data, expect the following ranges from local ADU builders. Quotes for the same scope typically vary 20-40% between contractors, so getting at least three bids is the single best way to control cost.
| New Detached ADU (all-in) | $120,000-$240,000 |
| Cost per Sq Ft | $160-$320 |
| Garage Conversion | $60,000-$130,000 |
| Prefab / Modular ADU (installed) | $80,000-$170,000 |
| City Permit & Plan Review | Valuation-based (Plan Review and Building Permit Fees table, rev. April 2010, still posted): a $150,000-$250,000 casita pays about $640-$920 permit plus $415-$600 plan review (65%), $25 zoning, $50 hydrology and trade permits. Site Plan - Administrative fee: see the Planning General Fee Schedule. |
| Impact Fees | Charged per new dwelling under ROA 1994 14-19-13 (Ord. 2012-034, 100% rate since 2017): the single-family-detached rate totals $2,990 (roads $1,399, parks $902, open space $449, fire $133, police $58, trails $49) plus drainage at $5,104 per impervious acre outside the Central City service area ($0 inside). No ADU exemption: 14-19-15(A)(2) exempts accessory buildings only when they are not a new dwelling unit. The Impact Fee Administrator (505-924-3984) assigns the category; affordable-housing and Metropolitan Redevelopment Area waivers exist (14-19-15(A)(5)-(6)). |
For a full line-item breakdown, see our Albuquerque ADU cost guide. To confirm what you're allowed to build before you hire, review the Albuquerque ADU rules (max detached size: 750 sq ft of gross floor area (IDO 14-16-4-3(F)(6)(a)); an attached garage does not count toward the cap. All accessory buildings together may also cover no more than 25% of the combined side and rear yards (14-16-5-11(C)(4)(a)). Downtown Neighborhood Area CPO-3: 650 sq ft (4-3(F)(6)(g)1).; owner-occupancy: Not required. The IDO 2025 Update text (effective 4/20/2026) contains no owner-occupancy clause for accessory dwelling units, and none was added by O-22-54 (2023) or O-24-69 (2025).).
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How to Vet an ADU Builder in Albuquerque
- License: Confirm a current contractor's license in New Mexico and that it's in good standing. Ask for the license number and verify it with the state board.
- ADU-specific experience: Ask how many ADUs they've completed in or near Albuquerque and request addresses or photos. ADU permitting and setbacks differ from a kitchen remodel.
- Portfolio & references: Get references from recent ADU clients and, if possible, visit a finished unit.
- Insurance: Verify general liability and workers' compensation coverage. Ask for a certificate of insurance.
- Written, detailed bid: Insist on an itemized, fixed-price or clearly-scoped bid — not a verbal estimate. It should state whether permits (Valuation-based (Plan Review and Building Permit Fees table, rev. April 2010, still posted): a $150,000-$250,000 casita pays about $640-$920 permit plus $415-$600 plan review (65%), $25 zoning, $50 hydrology and trade permits. Site Plan - Administrative fee: see the Planning General Fee Schedule.), plan check (About 2.5 weeks per residential review cycle (Building Safety FAQ); corrections go back through the standard cycle even for FasTrax jobs.), and impact fees (Charged per new dwelling under ROA 1994 14-19-13 (Ord. 2012-034, 100% rate since 2017): the single-family-detached rate totals $2,990 (roads $1,399, parks $902, open space $449, fire $133, police $58, trails $49) plus drainage at $5,104 per impervious acre outside the Central City service area ($0 inside). No ADU exemption: 14-19-15(A)(2) exempts accessory buildings only when they are not a new dwelling unit. The Impact Fee Administrator (505-924-3984) assigns the category; affordable-housing and Metropolitan Redevelopment Area waivers exist (14-19-15(A)(5)-(6)).) are included.
- Permit handling: Confirm they manage Albuquerque's permit process ("Two staff-level steps in ABQ-PLAN, no public hearing: (1) Site Plan - Administrative showing property lines, easements, existing structures, the casita and the parking space, with a grading and drainage plan and the required public notice (posted sign plus email to the neighborhood association); (2) building permit with a full construction set, plus separate electrical, plumbing and mechanical trade permits. Inspections: foundation, framing, insulation, electrical, plumbing/mechanical, final.", typically Building Safety publishes about 2.5 weeks for residential plan review per cycle; the optional FasTrax service (3x the plan-review fee, $1,000 minimum) targets about 10 days for the first cycle. Site Plan - Administrative review time is not published.) and who is responsible if revisions are required.
- Payment schedule: Avoid large upfront payments. A reasonable schedule ties payments to completed milestones.
Questions to Ask Before You Hire
- How many ADUs have you built in Albuquerque in the last two years?
- Is your bid fixed-price, and what would trigger a change order?
- Are permits, plan check, and utility connection fees included?
- What's a realistic timeline, including permit review (Building Safety publishes about 2.5 weeks for residential plan review per cycle; the optional FasTrax service (3x the plan-review fee, $1,000 minimum) targets about 10 days for the first cycle. Site Plan - Administrative review time is not published.) and construction?
- Who is my point of contact and how are delays communicated?
- What warranty do you provide on workmanship?
- Can you share three recent New Mexico ADU client references?
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