Digital permit application gateway
Start with the issuing authority’s own submission lane. A complete application package, accurate valuation, and accessible inspection path are the fastest route through statutory plan review.
Recommended first click
Use the official digital gateway to submit plans, monitor review comments, pay required charges, and request inspections when the permit is issued. If the link is unavailable, use the agency website or phone number on the administrative profile to confirm the current lane.
Typical review lane
After intake and invoice issuance, which the county says generally takes 2–4 business days, review begins when all fees are paid and can take up to 30 days. OSSF suitability plat review can take up to 45 days after fees are paid. Administratively complete plat packages are considered by Commissioners Court within 30 days. Residential and OSSF permits expire after 365 days of no activity; commercial/non-residential permits expire after 180 days of no activity.
Treat this as a planning signal, not a guaranteed approval date. Completeness, corrections, resubmittals, and agency workload control the actual clock.
Verify the parcel is inside this agency’s service area and note whether a city, state, fire marshal, septic authority, or utility district also has approval authority.
Prepare legible plans, site information, project valuation, ownership authorization, contractor information, and any energy, floodplain, zoning, or utility documentation the issuing office requires.
Keep the permit number, approved plan set, correction comments, fee receipts, and inspection results together. Those records establish the compliance trail for the next trade.
Application documents
Before submission, call 972-548-5585 (Development Services); 972-548-5576 (Fire Marshal’s Office); 972-548-3727 (Engineering) if the project involves a change of occupancy, structural alteration, accessory structure, demolition, or work near a regulated environmental feature.
Source trail
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Collin County Development Services / Engineering and Fire Marshal’s Office is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.
Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact 972-548-5585 (Development Services); 972-548-5576 (Fire Marshal’s Office); 972-548-3727 (Engineering).
After intake and invoice issuance, which the county says generally takes 2–4 business days, review begins when all fees are paid and can take up to 30 days. OSSF suitability plat review can take up to 45 days after fees are paid. Administratively complete plat packages are considered by Commissioners Court within 30 days. Residential and OSSF permits expire after 365 days of no activity; commercial/non-residential permits expire after 180 days of no activity.
Apply through the Citizen Self-Service portal; it accepts permit and plan applications, schedules inspections, provides review comments and status, and accepts fees. For residential/OSSF questions contact Development Services at 972-548-5585 or DevelopmentServices@co.collin.tx.us; OSSF inspections use DevelopmentSvcInspections@co.collin.tx.us. Apply for a development permit first when a new structure will connect to a new OSSF; staff then sends the associated OSSF permit through the portal. Commercial applicants should contact the Fire Marshal’s Office at 972-548-5576.
In unincorporated Collin County and county-permitting ETJ areas, residential and non-residential projects that disturb ground or add a footprint require a county Development Services permit; commercial projects may also require Fire Marshal permits. New residential dwellings and substantial remodels require a third-party inspection under state law/County Court Order. County floodplain regulations prohibit new residential structures in a FEMA Special Flood Hazard Area and require applicable floodplain permits, elevations, and flood-damage measures. OSSF work is regulated under Texas Health and Safety Code Chapter 366, 30 TAC Chapter 285, and stricter county OSSF rules; no separate county ICC edition was published. Permits are generally not required for re-roofing, new electrical service on an existing structure, roof-mounted solar panels, water-heater replacement, or AC-unit changeout when the project does not disturb ground, add footprint, create a new tenancy, or otherwise meet the county’s extensive-remodel threshold. Non-residential examples also include antenna additions on an existing cell tower without a new ground footprint. County and municipal/ETJ requirements can still change the result.
What makes an application complete
Before you click submit, make sure the drawings agree with the site plan, project description, valuation, ownership authorization, and contractor information. If the work changes structure, occupancy, drainage, fire protection, energy performance, or utility demand, describe that scope plainly. Ambiguous narratives create correction cycles and delay the field schedule.
Save the confirmation number, payment receipt, uploaded plan set, and every correction comment. Those records are the backbone of a defensible compliance file when multiple trades or agencies share responsibility.
Submission quality check
Site: address, parcel, access, setbacks, and existing conditions are consistent.
Scope: structural, mechanical, plumbing, electrical, fire, and energy work is identified.
Closeout: inspection contacts and the final approval path are understood before work begins.