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READYDOCSCOMPLIANCESTATESTEXASCOLLIN COUNTY
FILE 48085 · COUNTY OF COLLINSEAT · MCKINNEYPOPULATION · 1.2MVERIFIED · 05 / 2026
Public Compliance Directory · County Hub

Collin.

Collin County in Texas. This is where the state file translates into the local offices that actually issue the permit, schedule the inspection, and sign the filing. Start with the state baseline, then drill into the right city.

Cities on file
3
Trades indexed
12
County seat
McKinney
Last verified
05 / 2026
FAST FACTS

Collin County at a glance

Quick-reference card
County seatMcKinney
Population (est.)1.2M
FIPS48085
Building departmentCollin County Engineering (unincorporated)
Permit portalCity-by-city portals (Plano, Frisco, McKinney, Allen, etc.)
Fire marshalCollin County Fire Marshal
Browse cities→Back to state←
County of
Collin
· ACTIVE FILE ·
ARTICLE I · COUNTY BASELINE
CODES & LOCAL AUTHORITY
FIPS 48085
Article I · County Baseline

The county inherits from the state. And adds local rules.

2021 International Codes commonly adopted with city amendments.

Most permits run through city departments. Collin County Engineering handles unincorporated permits and floodplain review.

Impact fees and tree preservation rules vary city-to-city; Plano and Frisco have detailed forms.

How this fits with the state

The state authority here is Texas Department of Licensing and Regulation; Texas State Board of Plumbing Examiners. The county file does not replace that — it adds the permit office, local overlays, and the actual filing path.

Source · Collin County Engineering (unincorporated)Last verified · 05 / 2026
ARTICLE II · PERMIT OFFICES
WHERE THE PERMIT IS FILED
OPERATING PATH
Article II · Local Offices

Who issues, who inspects, who signs off.

Most cities require contractor registration. State licensing applies to plumbing, electrical, HVAC.

Building

Collin County Engineering (unincorporated)

Permits, plans, inspections

Verify hours, requirements, and fees on the local portal before filing.

Office · local
See sources →
Permit portal

City-by-city portals (Plano, Frisco, McKinney, Allen, etc.)

Apply, track, pay

Verify hours, requirements, and fees on the local portal before filing.

Office · local
See sources →
Planning / zoning

City planning offices

Land use, plan review

Verify hours, requirements, and fees on the local portal before filing.

Office · local
See sources →
Fire marshal

Collin County Fire Marshal

Prevention, alarms, sprinklers

Verify hours, requirements, and fees on the local portal before filing.

Office · local
See sources →
ARTICLE III · INSURANCE & BONDS
COUNTY OVERLAY ON STATE BASELINE
VERIFY BEFORE BIDDING
Article III · County Overlay

What Collin County usually adds.

The state sets the floor. The county and city can require additional certificates, local bonds, or pre-permit registration.

CoverageRequired?MinimumIssued by
Workers' CompensationState rule with county add-ons
Verify
Voluntary for most private employers
State authority
General LiabilityOften required by permit type
Conditional
Permit-based
Collin County Engineering (unincorporated)
Surety BondTied to state license or county permit
Conditional
Usually local or contract-based
State or county
County overlayNo statewide license; cities set their own liability proof requirements. Workers' comp optional under Texas law.
Verify
Varies
Collin County Engineering (unincorporated)
Source · Collin County Engineering (unincorporated)Verify before filing
ARTICLE IV · INDEXED CITIES
CITIES IN COLLIN COUNTY
3 CITIES
Article IV · Browse by City

Indexed cities in Collin County.

Pick a city to open its trade list. The trade page covers licensing, permits, insurance, and typical costs for that work in that city.

AllenCollin County
01
McKinneyCollin County
02
PlanoCollin County
03
ARTICLE V · TRADES
TRADES IN COLLIN COUNTY
12 TRADES
Article V · Trades

Trades branching in Collin County.

Each trade opens against the first indexed city in the county. Use the city browser above to open the same trade in another city.

Concrete
CODE · CN
GL
Open file →
Electrical
CODE · EL
State Lic.GLBond
Open file →
Flooring
CODE · FL
GL
Open file →
Framing
CODE · FR
GL
Open file →
General Contracting
CODE · GC
State Lic.GLBond
Open file →
HVAC
CODE · HV
State Lic.GLBond
Open file →
Landscaping
CODE · LS
GL
Open file →
Painting
CODE · PT
GL
Open file →
Pest Control
CODE · PC
State Lic.GL
Open file →
Plumbing
CODE · PL
State Lic.GLBond
Open file →
Pool Service
CODE · PS
GLBond
Open file →
Roofing
CODE · RF
LicenseBondGL
Open file →
ARTICLE VI · SOURCES
LOCAL SOURCE REGISTER
VERIFY LOCALLY
Article VI · Sources & Citations

Every filing needs a source trail.

This template keeps the county page honest: local context here, filing decisions made with the issuing office.

State

Texas Department of Licensing and Regulation; Texas State Board of Plumbing Examiners

Statewide licensing, reciprocity, and renewal rules.

/contractors/texas
VERIFIED
05 / 2026
County

Collin County Engineering (unincorporated)

Department that issues permits and schedules inspections for unincorporated areas.

City-by-city portals (Plano, Frisco, McKinney, Allen, etc.)
VERIFIED
05 / 2026
Planning

City planning offices

Land use, zoning review, and plan approvals.

Local planning office
VERIFIED
05 / 2026
Fire

Collin County Fire Marshal

Prevention, protection systems, and code approvals.

Fire marshal's office
VERIFIED
05 / 2026
Frequently Asked

Questions contractors ask before filing.

Q01Do I need a state license to work in Collin County?+
Usually yes — the baseline is the state license through Texas Department of Licensing and Regulation; Texas State Board of Plumbing Examiners. Collin County and its cities may add local registration before you pull a permit.Source · Texas Department of Licensing and Regulation; Texas State Board of Plumbing Examiners
Q02Does the county or the city issue the permit?+
It depends on where the work is. Unincorporated areas usually route through the county (Collin County Engineering (unincorporated)). Work inside an incorporated city normally files with that city's department.Source · Collin County Engineering (unincorporated)
Q03What changes between county and state?+
The county adds the actual permit office, local zoning overlays, plan-review timelines, inspections, and local fees. The state license defines who can contract; the county defines how the job gets filed.Source · County and municipal departments

Open the county file. Then pick the city.

Collin County now inherits from the state template and adds its own local detail. The next layer is the city and trade pages.

Browse cities→Back to state←