Texas · Counties · Galveston County

Galveston County

What it takes to put a carport, garage, barn or RV cover on your property in Galveston County, Texas. Permit authority, wind speed, and who to call.

Galveston · county seat Coastal tier, 1 to 10 miles inland 372,207 people · 379 sq mi VERIFIED 09 / 2026
COUNTY MAP
outline + city dots
slot, not yet drawn
DO YOU NEED A PERMIT?
Yes, a floodplain development permit

Galveston County permits through Engineering, Floodplain Permitting and Right-of-Way, and the office describes its job as permitting all development as defined in the Floodplain Regulations. The county reads development the FEMA way: any man-made change to improved or unimproved real estate, including but not limited to buildings or other structures. A building set on your land is a man-made change, so the county wants the permit before it lands. Individually done repairs such as roofing, siding, windows or deck replacement do not require one, and fencing does not require one.

Texas counties have no general zoning power. Outside city limits there are no county setbacks, no lot coverage rule and no design review, so nobody at the county can tell you where on your land the building goes.

The county states there is no zoning, no certificate of compliance, no fire marshal permit and no demolition permit. This is a floodplain and development answer, not a building code approval, and it stops at every city limit in the county.

  • All development, as defined in the Floodplain Regulations - means any man-made change in improved and unimproved real estate, including but not limited to buildings or other structures, mining, dredging, filling, grading, paving, excavation or drilling operations or storage of equipment or materials. Requires a permit.source ↗ · read 2026-09-09 · not archived
  • Repairs to a home such as roofing, siding, windows or deck replacement does not require a permit when done individually.source ↗ · read 2026-09-09 · not archived
  • There is no zoning, certificate of compliance, a fire marshal or demolition permitsource ↗ · read 2026-09-09 · not archived
  • permitting all development as defined in the Floodplain Regulations, as well as researching existing structures to grandfather or permitsource ↗ · read 2026-09-09 · not archived
  • Monday - Friday, 8:00 a.m. - 5:00 p.m.source ↗ · read 2026-09-09 · not archived
  • A valid permit and approved plan must be obtained to construct, alter, repair, extend or operate an on-site sewage facility.source ↗ · read 2026-09-09 · not archived
DESIGN WIND SPEED

Regional band for coastal tier, 1 to 10 miles inland. Wind speed follows your address, not the county line, so this is context and not a site figure.

130 – 150 mph
NOT SITE VERIFIED
90130–150130160 MPH

ASCE 7, Risk Category II. Look up your exact address →

County zoning
None
Statewide. Texas counties hold no general zoning power.
Windstorm certification
Required
Galveston is a first tier coastal county. A TDI WPI-8 is needed for TWIA coverage.
Floodplain administration
Not verified
We have not confirmed who administers FEMA floodplain permits here. Call the county before you pour.
Septic / OSSF setback
Not verified
If your slab lands near a septic field, the OSSF authority has a say. Ask when you call.
SPONSOR · 970×120AD 1 OF 2
TEXAS DEALER OR CONTRACTOR
photo + one line, always labeled
[email protected]

Cities and communities in Galveston County

Inside city limits the city's rules apply on top of the county's, and cities do zone. We have not yet read each city's ordinance, so every row below is marked unverified.

BacliffRules not verified
DickinsonRules not verified
FriendswoodRules not verified
GalvestonRules not verified
GilchristRules not verified
High IslandRules not verified
HitchcockRules not verified
KemahRules not verified
La MarqueRules not verified
League CityRules not verified
Port BolivarRules not verified
Santa FeRules not verified
Texas CityRules not verified
ALL ZIP CODES · 19
77510775117751777518775397754677550775517755477555775637756577568775737759077591776177762377650
WHO TO CALL

Galveston County Engineering, Floodplain Permitting & Right-of-Way

722 Moody Avenue, 1st Floor<br>Galveston, TX 77550
Call (409) 770-5552 County permit page ↗
Ask them three things: do I need a permit to put up a carport here, is my site in a floodplain, and how far from the septic field.
CHECK YOUR EXACT SITE

Opens ATC Hazards by Location, the source we use for wind, snow and seismic values.

SPONSOR · 300×250AD 2 OF 2
TEXAS DEALER OR CONTRACTOR
photo + one line, always labeled
[email protected]
Call Galveston County