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Accessory Dwelling Unit (ADU) Permit in Nederland, Colorado

Required for construction or conversion of an Accessory Dwelling Unit in Nederland. The Town publishes a dedicated ADU Application, Policies, & Procedures document; ADUs are otherwise processed through the standard residential building permit application and requirements applicable to their construction type (new build, addition, or conversion).

Reviewed 2026-07-06 · Source

When you need this permit

  • Governed by the Town's dedicated Accessory Dwelling Unit Application, Policies, & Procedures document (found under Project-Specific Information)
  • Subject to the same Concept Review/Site Plan Review trigger as other new construction/major-renovation projects if the ADU constitutes new construction, a 20%+ alteration, or is on sensitive land
  • Zoning compliance (setbacks, lot coverage, allowable uses per zoning district) must be confirmed via NMC Sec. 16-33 Yard and Bulk Requirements before design
  • Active Town of Nederland Contractor License required for all contractors Contractor
  • Standard building-permit-type requirements apply based on whether the ADU is new construction, an addition, or a conversion/remodel of existing space (e.g., a garage or basement conversion)

Required documents

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Fee schedule

Building Permit Fee (valuation-based, Table A schedule)Town of Nederland Building Permit and Building Department Services Fee Schedule, Exhibit A, Table A
Determined by project valuation per the general Building Permit Fee schedule
Concept Review / Site Plan Review Fee (if triggered)
Town of Nederland 2026 Fee Schedule, Building and Zoning section, page 2 — Accessory Dwelling Unit Permit Fee, $250.00. Show full citationTown of Nederland 2026 Fee Schedule, Building and Zoning section, page 2 — Accessory Dwelling Unit Permit Fee, $250.00. The Town's ADU Application, Policies and Procedures states this fee is waived for new construction and attaches no consulting escrow, so the escrow previously recorded on this line belongs to Concept Review rather than to the ADU permit. Concept Review itself is $275.00 where it applies.
$250.00

Review timeline

Plan review
Not published — contact the department

How long did your Accessory Dwelling Unit (ADU) Permit permit actually take in Nederland?

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Inspection process

  1. 1

    Standard construction-type inspections

    Inspections follow the same sequence as the ADU's underlying construction type (new building, addition, or remodel) — see residential-building-permit or residential-addition-remodel inspection lists

See the full Nederland inspection guide — scheduling & re-inspection fees →

Tips

  • Nederland has a dedicated ADU Application, Policies & Procedures document distinct from the general building permit application — request/review this document specifically before designing an ADU project, since it may include ADU-specific zoning or size limitations not covered in this record.
  • Confirm which underlying permit type your ADU falls under (new construction vs. addition vs. conversion/remodel) since fees, documents, and inspection sequences differ accordingly.

Frequently asked questions

Nederland requires an accessory dwelling unit (adu) permit for: Governed by the Town's dedicated Accessory Dwelling Unit Application, Policies, & Procedures document (found under Project-Specific Information); Subject to the same Concept Review/Site Plan Review trigger as other new construction/major-renovation projects if the ADU constitutes new construction, a 20%+ alteration, or is on sensitive land; Zoning compliance (setbacks, lot coverage, allowable uses per zoning district) must be confirmed via NMC Sec. 16-33 Yard and Bulk Requirements before design; Active Town of Nederland Contractor License required for all contractors; Standard building-permit-type requirements apply based on whether the ADU is new construction, an addition, or a conversion/remodel of existing space (e.g., a garage or basement conversion). If your project isn't listed, confirm with Town of Nederland Building, Planning & Zoning Department (Community Development) at 303-258-3266 before starting work.

In Nederland, the published Building Permit Fee (valuation-based, Table A schedule) is: Determined by project valuation per the general Building Permit Fee schedule. Additional published fees: Concept Review / Site Plan Review Fee (if triggered) — $250.00. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Nederland does not publish a plan-review timeline for this permit. Contact Town of Nederland Building, Planning & Zoning Department (Community Development) at 303-258-3266 for current turnaround.

You'll need: Accessory Dwelling Unit Application, Policies, & Procedures; Nederland Permit Application for New Residential and Commercial Construction; NMC Sec. 16-33 Yard and Bulk Requirements (reference). See the required-documents checklist on this page for details on each.

Nederland requires 1 inspection(s) for an accessory dwelling unit (adu) permit, in order: Standard construction-type inspections. Schedule each through Town of Nederland Building, Planning & Zoning Department (Community Development) (303-258-3266).

Apply through Town of Nederland Building, Planning & Zoning Department (Community Development) at 45 West First Street, Nederland, CO 80466 (mailing: PO Box 396, Nederland, CO 80466). Phone: 303-258-3266, email: planner@nederlandco.org. Office hours: Nederland Town Hall open Monday to Friday, 9 a.m. to 5 p.m. In-person appointments with the Community Planner at Town Hall are available on a staggered schedule: first and third weeks of the month on Monday and Wednesday; second and fourth weeks on Wednesday and Friday. Virtual (Teams) meetings available any time by appointment. All Building/Right-of-Way permits and Land Use Applications are submitted to planner@nederlandco.org. Building inspections are scheduled directly with the Town's contracted plan-review/inspection firm, SAFEbuilt Colorado, at (303) 450-8745.. Official information: https://www.nederlandco.gov/1289/Building-Planning-Zoning-Department.

Nederland, Colorado has adopted: 2024 ICC family of codes (IBC, IRC, IFC, IPC, IMC, IFGC, IECC, etc.) — per the Town of Nederland Building, Planning & Zoning Department's live 'Building Guides and Permits' webpage: 'The Town of Nederland is governed under the 2024 ICC codes, with 2026 National Electrical Code (NEC) in effect.' This is the department's actively maintained, currently published code-adoption statement and is treated as the governing current code cycle for this record.; Several documents still posted on the Town's site cite an older code cycle. The 'Nederland Design Criteria' PDF (Other Helpful Information page) lists 'ICC IBC/IRC (Bldg. codes) 2018' and 'Nat'l Electrical (NEC) 2020 or most current'. The Residential Solar Photovoltaic (PV) System Permitting Checklist (effective 1/1/2022) lists 2018 IBC/IRC/IMC/IPC/IFGC/IECC/IPMC/IEBC editions, 2020 NEC, ICC/ANSI 117.1 (2009), 2018 IFC, and the 2018 International Swimming Pool and Spa Code. The Residential Application Checklist (SAFEbuilt Colorado submittal list) references '2018 International Code Council IBC or IRC compliance' and '2018 IECC Energy Code Compliance.' The Building Department webpage states the current adopted cycle as 2024 ICC / 2026 NEC, and that is what governs. Use the older documents only as a guide to the design and plan-review detail SAFEbuilt asks for, and design to the current editions.; HB22-1362 (Colorado statewide energy code floor / electrification-readiness requirements for municipalities adopting or updating a building code) is not referenced anywhere on the Town of Nederland's Building, Planning & Zoning Department pages, adopted-codes statement, fee schedule, or permit-application PDFs. Nederland's own site states only that 2024 ICC codes (which as of the 2024 IECC cycle already carry more stringent efficiency provisions than 2018 IECC) are in effect, with no separate local ordinance citation for HB22-1362 compliance. No specific compliance mechanism beyond the general 2024 IECC adoption is asserted here; verify further with the Building Department directly (303-258-3266).. Local amendments apply — see the Nederland overview page for the full list.

Yes. The Town publishes a dedicated Accessory Dwelling Unit Application, Policies, & Procedures document. Beyond this ADU-specific paperwork, the project is processed under the same residential permit requirements applicable to its construction type (new build, addition, or remodel/conversion).

Sources & verification

Key facts verified against official sources. Last reviewed 2026-07-06.

Applications & forms

Department & other records

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 Nederland building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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Accessory Dwelling Unit (ADU) Permit in other cities

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