Before You Build in Katy, TX: Permit & Rule Checklist (2026)
Everything you need to know before starting a home improvement project
Building a fence, installing a pool, or adding a shed? Each project has its own set of local permits and rules in Katy. This guide consolidates fence, pool, ADU, shed, fire pit, and landscaping regulations into one checklist so you know what to expect before you start.
Quick Permit Checklist
At-a-glance overview of permit categories in Katy. Click any card for details.
Fences & Walls
Height limits, materials, permits, and shared fence rules.
No specific fences & walls rules found for Katy. Check with your local building department for current requirements.
Swimming Pools
Some RestrictionsPool permits, safety fencing, and drainage requirements.
Above-Ground Pools
Some RestrictionsAbove-ground pools in Katy must obtain the same building permit and meet the same 2021 ISPSC standards as in-ground residential pools.
Hot Tub Rules
Some RestrictionsHot tubs and spas in Katy fall under the same adopted International Swimming Pool and Spa Code, with permit and safety cover or barrier requirements.
Pool Permits
Some RestrictionsKaty requires a building permit before construction or installation of any in-ground or above-ground residential swimming pool within city limits.
ADUs & Granny Flats
Accessory dwelling unit rules and garage conversion permits.
No specific adus & granny flats rules found for Katy. Check with your local building department for current requirements.
Sheds & Outbuildings
Some RestrictionsShed permits, setback limits, and outbuilding size rules.
Carport Rules
Some RestrictionsKaty treats carports as accessory structures requiring a building permit, with placement governed by the same setback and height rules as other detached accessory buildings.
Shed Rules
Some RestrictionsKaty requires a permit for storage sheds and other detached accessory buildings, with setback and height limits set by the city zoning ordinance and building code.
Fire Pits & Outdoor Structures
Heavy RestrictionsFire pit placement, outdoor burning restrictions, and permits.
Fire Pit Rules
Heavy RestrictionsKaty bans construction or use of any barbecue pit or open flame within 10 feet of a multifamily building wall, or beneath a balcony, porch, roof overhang, or veranda. The rule was adopted under Ordinance 3123 amending the 2021 International Fire Code.
Landscaping & Tree Removal
Heavy RestrictionsTree removal permits, heritage tree protections, and water rules.
Tree Removal & Heritage Trees
Heavy RestrictionsRemoving or destroying a tree on Katy public property without the public works director's permission is a misdemeanor with fines up to $200 per tree.
Tree Trimming
Heavy RestrictionsKaty requires the public works director's approval before trimming, pruning, or otherwise altering any tree on city property, easements, or rights-of-way.
Water Restrictions
Heavy RestrictionsKaty enforces a multi-stage drought plan with mandatory twice-weekly outdoor watering windows tied to address numbers and land use.
General Permit Tips
When do you typically need a permit?
Most cities require permits for structural work, including fences over a certain height, pools, ADUs, and sheds above a size threshold. Even projects that seem minor can trigger permit requirements, so it is always best to check first.
How to apply for a building permit
Visit your local building department or their website. Most jurisdictions accept online applications. You will typically need a site plan, project description, and may need contractor information. Processing times vary from same-day for simple projects to several weeks for larger builds.
Common permit violations to avoid
Building without a permit, exceeding approved dimensions, and ignoring setback requirements are the most common violations. Penalties can include fines, required removal of the structure, and complications when selling your home.
Permit Guides for Nearby Cities
Looking for rules beyond permits? View all ordinances we track for Katy.