Westminster, Colorado Building Permit Guide

Westminster spans Adams and Jefferson counties on the north-west metro corridor, runs a fully paperless permit process, and issues permits by project rather than by trade. Two dated changes are landing in 2026 and both need planning for.

The Building Division publishes its review times and its electronic file submittal requirements, with all applications, plan submissions, inspection requests and results handled through the city’s permitting portal.

This guide covers work inside the Westminster city limits, which lie in both Adams and Jefferson counties. Unincorporated land in either is permitted by that county, and the neighbouring metro cities permit separately.

What requires a building permit in Westminster?

An exemption from a building permit is never an exemption from zoning, from the adopted energy provisions, or from a trade permit. Confirm scope with the Westminster Building Division before work starts.

Local rules worth knowing

The fee model is structurally different from its neighbours: Westminster issues permits for a project, not based on trade, so where more than one trade is involved the subcontractor permit and plan review fees are calculated as a percentage of the general building permit and plan review fees rather than as separate standalone permits

Colorado has no statewide building code for private buildings: each city and county decides whether a code applies and which edition, while the state sets electrical and plumbing rules, a minimum energy code on any update, and a wildfire code for the mapped wildland-urban interface. Building codes in Colorado

Who handles permitting in Westminster?

The Building Division administers permitting, plan review and inspections for the city on a fully paperless basis, publishing its review times, its electronic file submittal requirements and recorded sessions on contractor licensing and code updates. The city permits and inspects electrical and plumbing work as part of each project permit, so the state boards do not issue trade permits inside Westminster. The 2021 International Codes have been in force since 1 June 2024. Fire suppression and fire alarm permits are applied for separately through the fire department, at the time of the building permit application.

The electrical code moves on a published date. Effective the first of August, 2026, permits need to comply with the 2026 edition of the national electrical code — so a project straddling that date should confirm which edition governs its permit rather than its design start.

The portal has practical constraints the city states plainly. It works best in one browser, and applications cannot be completed on a smartphone or tablet at all. Public users can view records and check project status without logging in; registered public users can pay fees and view records in detail; contractors can pay fees, apply for permits and schedule and cancel inspections on their own permits.

In 2025, building permits issued in Westminster authorized 171 new privately owned housing units, all of them single-family homes, according to the U.S. Census Bureau Building Permits Survey.

Permit types

Residential permits

Permits are required for both interior and exterior residential building projects. The city publishes examples of projects needing permits rather than an exhaustive exemption list, and asks applicants to read the electronic file submittal requirements before applying, since the process is entirely paperless.

How Colorado contractor credentials work

Commercial permits

Commercial review is published at 30 business days for the initial review and 15 business days for subsequent reviews. Tap fees for new water and sewer connections must be paid when the building permit is issued, and are recalculated if the building’s use changes in future, with additional tap fees potentially due at that point.

Local licences, state trade registration and design professionals

Three credential layers appear on a Colorado project and they are held by three different bodies: the local general contractor licence and any bond the jurisdiction requires; state registration for the electrical and plumbing contractors, verified with the state boards; and, on commercial and larger residential work, drawings stamped by a Colorado-licensed architect or professional engineer. Confirm what the Westminster Building Division requires for the specific building before filing.

Colorado has no state general contractor licence (cities and counties license builders), while electricians and plumbers are licensed statewide by the State Electrical and Plumbing Boards. Contractor licensing in Colorado

Westminster permit costs and fees

Westminster prices by project rather than by trade, with subcontractor permit and plan review fees calculated as a percentage of the general building permit and plan review fees. Tap fees for new water and sewer connections are payable at permit issuance.

Because Colorado sets no statewide building fee schedule, two jurisdictions on the same model code can price the same project very differently. The component most often missed is the trade permit: electrical and plumbing permits are separate local permits with their own fees. Ask the Westminster Building Division for the schedule in force on your filing date, and confirm the electrical and plumbing route separately.

Colorado has no state building fee schedule, so fees, including electrical and plumbing permit fees, are set locally wherever a local inspection programme exists. Permit fees in Colorado

Trade permits and who may pull them

Electricians and plumbers are licensed by the state, but the state boards issue trade permits only where a city or county has no inspection programme of its own, and inspect all public school work. Trade permits in Colorado

How to apply for a Westminster building permit

Review, corrections and what actually causes delay

The first cause of delay in Colorado is the wildland-urban interface, where a parcel inside the mapped area brings requirements the building code alone does not describe. The second is the energy code, because the tier a jurisdiction sits on depends on when it last updated rather than on a statewide date. The third is edition drift between neighbouring jurisdictions on the same corridor. There is no statutory review clock for building permits: any timeline you are given is that jurisdiction’s own target. Confirm the checklist with the Westminster Building Division before filing.

Local permit validity is set by Westminster; where the state boards issue a trade permit, it runs 12 months from issue. Permit validity in Colorado

Inspections in Westminster

Standard checkpoints include footing and foundation, framing, rough-in electrical, plumbing and mechanical, insulation and energy compliance, fire systems on commercial work, and final, with a certificate of occupancy before the building is used. Contractors can schedule and cancel inspections on their own permits through the portal, but only for permits they are signed on to.

Do not cover work before the required inspection has been approved. Keep the issued permits, the approved plans and the energy compliance documentation available on site.

Westminster permit search and official resources

Permit records in Colorado are split the way the permits are. Where the Westminster Building Division is the authority for the City of Westminster, it holds the building record — and the electrical and plumbing permits too, because this area runs its own electrical and plumbing inspections (the state boards permit only where no local programme exists). If you are buying, refinancing or renovating, check both, because a clean local record does not mean the trade work was ever permitted.

These are the primary sources behind this guide. Codes, fee schedules and procedures change — confirm the position for your filing date.

• Westminster Building Division
• Westminster apply for a permit or project
• Westminster building fees
• Colorado electrical and plumbing permits homepage
• State Electrical Board permit and inspection information

Frequently asked questions

Why will my permit not release?

From the first of May, 2026, a general contractor as well as the mechanical, plumbing and electrical subcontractors must be registered with the city and signed on to the permit, as applicable, prior to permit release. An empty trade seat holds the whole permit.

How are trade permits priced here?

As a proportion rather than separately. Westminster issues permits for a project, not based on trade, and subcontractor permit and plan review fees are calculated as a percentage of the general building permit and plan review fees. Additional fees are due where more than one trade is involved.

How long is commercial review?

30 business days for the initial review and 15 business days for subsequent reviews, as published by the division.

Which electrical code applies?

It depends on the permit date. Effective the first of August, 2026, permits need to comply with the 2026 edition of the national electrical code. The trades are the part Colorado does decide centrally. The State Electrical Board and the State Plumbing Board issue permits and inspect only where a city or county has no electrical and plumbing inspection programme of its own. This area has one, so the trade permits are issued locally; the state still inspects electrical, plumbing and gas work in public schools. Electricians and plumbers are licensed by those state boards and the licences are statewide, while general contractors are licensed by municipalities and counties, often with a surety bond. It is a violation of state law for anyone other than the homeowner, who is not a registered electrical or plumbing contractor, to install that work, and the homeowner exception covers only work you do yourself on a home you live in that is not for sale or rent.

Which building code edition applies?

The edition Westminster adopted. Colorado has no statewide building code. For private buildings, state law leaves adoption to local government, so whether a building code applies at all, and which edition, is decided by the municipality or the county — roughly 270 municipalities and 64 counties, each choosing for itself. House Bill 22-1362 does not compel any jurisdiction to update, but when a jurisdiction adopts or updates a building code it must take up at least the specified minimum energy code, so the energy floor arrives with the update rather than on a statewide date; for updates made on or after 1 July 2026 that floor is the state’s Model Low Energy and Carbon Code. Where the energy provisions or the state model codes conflict with the Colorado plumbing code or the National Electrical Code, the plumbing code or the electrical code prevails.

Can I apply on my phone?

No. The city states that applications cannot be completed on a smartphone or tablet, and recommends a desktop browser for the portal.

Simplify Westminster permitting with Alliance Permitting

When subcontractor appointment becomes a permitting milestone, procurement has to move earlier. We flag that at programme stage.

Trusted by leading builders, developers, and national contractors — 21+ years of filing in the jurisdictions we write about.

Contractors and builders choose Alliance for Westminster because the work is done by people who have stood at the counter:

• 21+ years of filing, so the trade authority is settled before the application goes in
• We confirm which edition the jurisdiction adopted and when it last updated
• Local general contractor licence and state trade registration both verified, in different places
• Wildland-urban interface position checked against the state map before the design is fixed
• Two inspection queues sequenced so a cover-up never waits on the wrong inspector

Alliance Permitting is a permit documentation and submission company in Colorado. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Westminster permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.