Commercial Building Permit (New Construction & Tenant Improvement) in Williams, Arizona

Williams requires a commercial building permit (new construction & tenant improvement) for: Building permit and approved plot plan required prior to construction, remodeling, or alteration of any building within Williams city limits (Code of Ordinances § 158.126); plot plan/building permit procedure follows Code of Ordinances § 154.018 (plot plan and fees to the City Planner, staff review within six working days, then Building Permit Application and plans to the Chief Building Official — commercial plans may be reviewed by city staff or a referred architecture/engineering consultant); Commercial Plans design-professional threshold: new construction and alterations for buildings of 3,000 sq ft or more, major electrical/mechanical/plumbing improvements or replacements, housing of more than 4 units, or public improvements must have plans sealed by a qualified registrant (architect and/or engineer) holding an Arizona State License per A.R.S. § 32-144 ('Procedure to Obtain Building Permit', Commercial Plans section); Motels and restaurants: the City must receive a copy of approval-to-construct from the Coconino County Health Department (928-679-7120) prior to issuing a permit — a hard pre-issuance gate for Williams' dominant hospitality/food-service project types; Commercial Submittals per the City's published checklist: (A) complete Permit Application with required deposit — an incomplete application will not be accepted; (B) five (5) sets of Civil Plans; (C) three (3) sets of Construction Plans with civil drawing attached; (D) Soils Report; (E) Structural Calculations; (F) Life Safety Plan; (G) SWPPP — submit Notice of Intent (NOI) if required; (H) Floodplain determination and documentation, sealed by a registered design professional, if required; (I) Deferred Submittals listed on the construction-plan cover sheet, reviewed by the architect/engineer for design conformance and approved by the Building Official prior to construction or installation; Plan cover sheet must list: design codes, design criteria, legal description (APN), site address, floodplain, floor area, design professionals, deferred submittals, type of construction, occupancy, occupancy load, number of employees, and special inspections; All work within the Historic District must have approval from the Historic Commission prior to permitting ('Procedure to Obtain Building Permit', Planning & Zoning section) — directly relevant to Williams' Route 66 historic downtown commercial corridor; work in the Main Street District is forwarded to the Main Street Design Committee under Code of Ordinances § 154.018; Commercial soil pressure design is per engineered design (not the 1,500 psi residential default); building shall not be built on fill material unless the fill is engineered and tested by an approved agency ('Building and Design Criteria Requirements'); Commercial fire-protection amendments (Ordinance No. 956, IFC §§ 903.2/903.2.3/905.3): automatic sprinklers required for new buildings unable to meet fire-flow requirements as determined by the Fire Chief, for Group E occupancies more than one story, and for any commercial building greater than two stories; standpipe systems required in any commercial building greater than two stories — relevant to multi-story hotel/lodging projects; $500.00 non-refundable Commercial application submittal deposit due at submittal, credited toward total permit cost; applicant has 90 days after acceptance notification to resolve all application/plan issues and pay for/pick up the permit or the deposit is forfeited; New-construction permits are valid one (1) year with an inspection no less than every 180 days; revisions to approved plans must be submitted by drawings or addendum letters BEFORE the revised work is commenced. If your project isn't listed, confirm with City of Williams Building Department at 928-635-4451 ext. 205 before starting work.

In Williams, the published Application Submittal Deposit (Commercial) is: $500.00 (non-refundable, credited toward total permit cost). Additional published fees: Building Permit Fee / Plan Review Fee / trade fees — Fee schedule as established by City of Williams resolution of the City Council (exact dollar amounts not published). These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

The City publishes a general average of 15 working days for plan review and permit issuance (workload-dependent), with a six-working-day plot-plan review step preceding it under Code of Ordinances § 154.018. There is no published commercial-specific timeline and no A.R.S. § 9-835 time-frames document was found; external steps (Coconino County Health Department approval for motels/restaurants, Historic Commission review downtown) add lead time outside that figure.

You'll need: City of Williams Building Permit Application; Civil Plans (5 sets); Construction Plans (3 sets, with civil drawing attached); Soils Report; Structural Calculations; Life Safety Plan. Depending on your project, Williams may also ask for: SWPPP / Notice of Intent (NOI); Floodplain Determination and Documentation; Coconino County Health Department Approval-to-Construct. See the required-documents checklist on this page for details on each.

Williams requires 4 inspection(s) for a commercial building permit (new construction & tenant improvement), in order: Footing/Foundation, Framing / Rough Trades, Special Inspections, Final / Certificate of Occupancy. Schedule each through City of Williams Building Department (928-635-4451 ext. 205).

Apply through City of Williams Building Department at 113 South 1st Street, Williams, AZ 86046-2549. Phone: 928-635-4451 ext. 205, email: tmartinez@williamsaz.gov. Office hours: Phone 928-635-4451, fax 928-635-4495. Chief Building Inspector / Building Official: Tim Martinez (928-295-5478, tmartinez@williamsaz.gov) handles building permit review and issuance; Building Official Raul Hatch (928-635-4451 / 928-295-5478, rhatch@williamsaz.gov) is listed as the signing official on the Fence and Demolition permit application forms — the department appears to operate with more than one Building Official-titled staff member across different permit forms as of 2025. Applications are submitted in person or by mail using the City's paper Building Permit Application (no online portal was found); permits are picked up and fees paid at the City Hall front desk. Two sets of construction documents/plans required for submittal.. Official information: https://www.williamsaz.gov/departments_and_services/building_department.

No. Commercial alterations/tenant improvements are processed under the same Commercial Plans / Commercial Submittals track as new commercial construction, on the same Building Permit Application with the same $500 non-refundable application deposit. The City's 'Procedure to Obtain Building Permit' addresses 'new construction and alterations' together and publishes only one Commercial deposit tier.

Three common ones: (1) motels and restaurants must provide a copy of Coconino County Health Department approval-to-construct (928-679-7120) before the City will issue a permit; (2) any work within the Historic District needs Historic Commission approval prior to permitting (Main Street District work goes to the Main Street Design Committee); (3) projects at 3,000+ sq ft, with major MEP improvements/replacements, more than 4 housing units, or public improvements need plans sealed by an Arizona-licensed architect/engineer per A.R.S. § 32-144.