Before You Build in Cary, NC: 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 Cary. 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 Cary. Click any card for details.
Fences & Walls
3 rules on file
Swimming Pools
3 rules on file
ADUs & Granny Flats
2 rules on file
Sheds & Outbuildings
2 rules on file
Fire Pits & Outdoor Structures
2 rules on file
Landscaping & Tree Removal
3 rules on file
Fences & Walls
Some RestrictionsHeight limits, materials, permits, and shared fence rules.
Height Limits
Some RestrictionsCary limits fences to 4 feet in front yards and up to 6–7 feet in side and rear yards per LDO §7.2.7. Fences within 15 feet of a road have a 6-foot maximum; other areas allow up to 7 feet.
Permit Requirements
Few RestrictionsMost residential fences in Cary do not require a building permit. Permits are required only for fences on collector streets or thoroughfares, or fences that exceed standard height limits.
Neighbor Fence Rules
Few RestrictionsNorth Carolina does not have a statutory requirement for neighbors to share fence costs. Cary follows common law principles — the builder pays unless both parties agree to share costs.
Swimming Pools
Heavy RestrictionsPool permits, safety fencing, and drainage requirements.
Fencing Requirements
Heavy RestrictionsNorth Carolina requires pool barriers of at least 48 inches (4 feet) high for pools with more than 18 inches of water. Gates must be self-closing, self-latching, and open outward.
Above-Ground Pools
Some RestrictionsAbove-ground pools in Cary with more than 18 inches of water must meet the same barrier requirements as in-ground pools. Building permits may be required depending on pool size.
Safety Rules
Heavy RestrictionsCary enforces NC building code pool safety requirements including barriers, drain covers, and equipment maintenance. A building permit and final inspection are required for all new pools.
ADUs & Granny Flats
Some RestrictionsAccessory dwelling unit rules and garage conversion permits.
Garage Conversions
Some RestrictionsGarage conversions in Cary require building permits and must meet habitable space standards. The conversion must comply with parking requirements for the property unless converting to an ADU.
ADU Rules
Some RestrictionsCary has adopted ADU regulations as part of its Housing Plan. ADUs are permitted as accessory dwelling units on residential lots subject to size, setback, and design standards in the LDO.
Sheds & Outbuildings
Some RestrictionsShed permits, setback limits, and outbuilding size rules.
Carport Rules
Some RestrictionsCary regulates carports as accessory structures under Land Development Ordinance Section 5.3.4 and Table 6.3-1. Detached carports must sit at least 5 feet from rear and side lot lines and outside required roadway (front) setbacks. Carports that are roofed and open on three or more sides are exempt from accessory-structure floor area limits when located outside the principal-structure setback.
Shed Rules
Few RestrictionsCary allows sheds and accessory structures. Small sheds under certain size thresholds may not require building permits but must comply with zoning setbacks and lot coverage limits.
Fire Pits & Outdoor Structures
Some RestrictionsFire pit placement, outdoor burning restrictions, and permits.
Fire Pit Rules
Some RestrictionsCary allows portable outdoor fireplaces without a permit. Recreational fires must be at least 25 feet from structures. Portable fireplaces at one- and two-family homes are exempt from the 15-foot commercial setback.
Outdoor Burning
Some RestrictionsCary regulates outdoor burning through Chapter 16 of its Code of Ordinances and NC Fire Code. Open burning of yard waste is restricted; recreational fires are allowed with conditions.
Landscaping & Tree Removal
Some RestrictionsTree removal permits, heritage tree protections, and water rules.
Tree Trimming
Some RestrictionsCary requires property owners to maintain trees so they don't obstruct sidewalks, streets, or sight lines. The town has an active urban forestry program and protects significant trees.
Water Restrictions
Some RestrictionsCary implements water conservation measures through its utility system. Outdoor watering restrictions vary by drought stage, with odd/even day watering schedules and time-of-day limits.
Tree Removal & Heritage Trees
Some RestrictionsCary protects trees through its Land Development Ordinance. Tree removal permits may be required for significant trees, especially during development. The town values its tree canopy.
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 Cary.