Do I need a licensed contractor for a home addition in Arvada?

Not if you are the owner and occupant of the residence and you perform all the work yourself. If you hire any contractor for any part of the project, or if the home is not your primary residence, the City of Arvada requires a licensed contractor (Class I-B, II-B, or III-B) to be listed on the permit.

Residential Addition / Remodel Permit in Arvada, Colorado

Covers additions, structural alterations, egress window additions, and interior remodels (basement finishes, kitchen/bath remodels) to existing homes in Arvada. Additions and exterior structural work use the 'Residential Exterior' application; interior-only remodels use 'Residential Interior.' Both are reviewed against the currently adopted 2018 IRC (2024 IRC effective for submittals on or after July 1, 2026).

Verified 2026-06-30 · Source

When you need this permit

Additions, attached/detached garages, egress window additions processed via the Residential Exterior permit type
Interior remodels (basement finishes, egress windows added as part of a basement finish, kitchen/bath remodels) processed via the Residential Interior permit type
Plan review is required for exterior permit types — plans must be submitted for review before a permit is issued
A license is not required if the owner/occupant performs the work themselves; a City-licensed contractor (Class I-B, II-B, or III-B) is required if any part of the work is contracted out
Non-owner-occupied residences must use a licensed contractor to obtain the permit
Any added electrical, plumbing, or gas line work must be clearly identified on the plans, including gas line sizing calculations where applicable

Required documents

Req
Building Permit Application (eTRAKiT — Residential Exterior or Residential Interior)
Online application selecting the correct project category
Req
Plan Set
Drawn to scale; engineered plans required only if structural changes are involved; Arvada's building guides can substitute for full plan sets on straightforward projects
Req
Plot Plan
Shows dimensions of the project and its relationship to existing structures and property lines (required for exterior/addition projects)
Opt
Subcontractor Forms
Required for any licensed mechanical, plumbing, or electrical subcontractor on the project

Fee schedule

Fee type	Amount	Notes
Building Permit Fee — valuation-based (same Table 18-1 as new construction)	Varies by valuation — see Residential Building Permit fee tiers above ($34 minimum up to $5,669.25 + $3.45/$1,000 over $1M)	Arvada Municipal Code Chapter 18, Table 18-1
Use Tax	Assessed on the building valuation using a 58% materials / 42% labor split	Arvada Municipal Code § 98-84
Basement Finish — Added Cost (Type VB)	$31.50 per sq ft (added valuation basis, Type VB construction)	Table 18-2 Building Valuation, 'Basement Finish – Added Cost' line
Additional plan review (changes, additions, revisions, or deferred submittal — minimum 1 hour)	$80.00 per hour	Table 18-3

Review timeline

2–12 business days

Arvada’s published plan-review target

Inspection process

1
Footing (if new footings)
Before concrete pour
2
Rough Frame / Structural Sheathing
After framing complete, before insulation or wall cover
3
MEP Rough-In
Rough electrical, rough plumbing, rough mechanical (as applicable) before walls closed
4
Final (Building, Electrical, Plumbing, Mechanical as applicable)
All work complete per approved plans

Tips

Arvada's Residential Exterior page states plan reviews typically take 2-12 business days depending on plan complexity and current staff workload — this is a published, city-stated range (used here as the verified review timeline for addition/remodel projects going through the exterior permit path).
Egress windows added as part of a basement finish need the Residential Interior permit type, not Residential Exterior — apply under the correct category or your application may be routed incorrectly.
If you are the owner AND occupant of the residence and do all the work yourself, no contractor license is required; if the residence is not your primary residence, you must hire or become a licensed contractor.

Frequently asked questions

Do I need a licensed contractor for a home addition in Arvada?: Not if you are the owner and occupant of the residence and you perform all the work yourself. If you hire any contractor for any part of the project, or if the home is not your primary residence, the City of Arvada requires a licensed contractor (Class I-B, II-B, or III-B) to be listed on the permit.

Sources & verification

Verified against official sources. Last reviewed 2026-06-30.

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

Other permits in Arvada

Residential Building Permit (New Construction)Electrical Permit Plumbing Permit Mechanical / HVAC Permit Roofing Permit (Re-Roofing)Solar PV Permit Accessory Dwelling Unit (ADU) Permit Demolition Permit Commercial Tenant Improvement / Tenant Finish Permit Deck / Covered Patio Permit

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