How much does a solar permit cost in Boulder?

Boulder charges a flat Photovoltaic System Permit Fee of $69.60 for residential systems and $139.20 for nonresidential/multifamily systems, per the 2026 Schedule of Fees. Solar PV is permitted as an Electrical Permit category, not a separate solar-specific permit type.

Is solar water heating permitted the same way as solar PV in Boulder?

No. Solar thermal (solar water heating) systems are permitted as a Mechanical Permit ($69.60 residential / $139.20 nonresidential-multifamily under the Solar Thermal System fee), while rooftop solar photovoltaic systems are permitted as an Electrical Permit.

Solar PV Permit in Boulder, Colorado

Required for installation of rooftop or ground-mounted solar photovoltaic systems in the City of Boulder. Solar PV is processed as an Electrical Permit (not a separate solar-specific permit category); small roof-mounted systems under 10 kW are typically eligible for over-the-counter processing when the application package is complete. Solar thermal (solar water heating) is processed separately as a Mechanical Permit.

Verified 2026-06-30 · Source

When you need this permit

All solar PV installations require an Electrical Permit; solar thermal systems require a Mechanical Permit
Systems under 10 kW roof-mounted are typically eligible for over-the-counter/expedited issuance with a complete application
Documentation must include PV system capacity in watts and system type (stand-alone, grid-tied, or hybrid)
Location of all disconnects and array layout with required minimum access/pathways per the applicable Fire Code section must be shown
An engineer's evaluation of the existing roof structure's dead-load capability (referencing required wind and snow load for the site) is required
Applicants are encouraged to discuss the proposed installation with a Project Specialist at the Planning & Development Services Center before submitting
Photovoltaic permits can be submitted online via the CSS Portal

Required documents

Req
Electrical Permit Application — Photovoltaic (CSS Portal)
Submitted online via the Customer Self-Service Portal, Photovoltaic Solar category
Req
Roof Structural Evaluation
Engineer's evaluation of dead-load capability of the existing roof structure for the added PV weight, referencing site wind and snow load design criteria
Req
Equipment / Array Layout Plan
PV system capacity, disconnect locations, array layout, and required access/pathways

Fee schedule

Fee type	Amount	Notes
Photovoltaic System Permit Fee — Residential	$69.60	2026 Schedule of Fees, Electrical Permit Fees — Photovoltaic System Permit Fee
Photovoltaic System Permit Fee — Nonresidential and Multifamily	$139.20	—

Review timeline

~0–5 business days

Typical estimate — confirm current times with the Boulder building department

Inspection process

1
Rough Electrical
Conduit runs, wire sizing, disconnect placement before cover
2
Final — Structural / Racking and Electrical
Panel mounting, racking attachment, roof penetration sealing, and all electrical connections verified

Tips

Boulder charges a flat, low Photovoltaic System Permit Fee ($69.60 residential / $139.20 nonresidential/multifamily) under the Electrical Permit Fees table — this is a notably simple/low fee compared to the valuation-based building permit fee schedule.
Systems under 10 kW roof-mounted are typically over-the-counter eligible; larger or ground-mounted systems may require additional review — confirm with a Project Specialist before applying.
Roof structural adequacy for the added PV dead load must be evaluated against Boulder's site-specific wind (150/165 mph) and snow load design criteria.

Frequently asked questions

How much does a solar permit cost in Boulder?: Boulder charges a flat Photovoltaic System Permit Fee of $69.60 for residential systems and $139.20 for nonresidential/multifamily systems, per the 2026 Schedule of Fees. Solar PV is permitted as an Electrical Permit category, not a separate solar-specific permit type.
Is solar water heating permitted the same way as solar PV in Boulder?: No. Solar thermal (solar water heating) systems are permitted as a Mechanical Permit ($69.60 residential / $139.20 nonresidential-multifamily under the Solar Thermal System fee), while rooftop solar photovoltaic systems are permitted as an Electrical 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 Boulder building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

Other permits in Boulder

Residential Building Permit (New Construction)Residential Addition / Remodel Permit Electrical Permit Plumbing Permit Mechanical / HVAC Permit Roofing Permit (Reroof)Accessory Dwelling Unit (ADU) Permit Demolition Permit Commercial Tenant Improvement Permit Deck / Covered Patio Permit

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