Before You Build in Corona, CA: Permit & Rule Checklist (2026)

Retaining walls in Corona over 4 feet (measured from bottom of footing to top of wall) require a building permit. Walls supporting any surcharge load — sloped soil, driveways, pools, or structures — require permits and engineered design at any height. Hillside areas have additional requirements for terracing and drainage.

Corona requires building permits for fences over 6 feet tall, all retaining walls over 4 feet (measured from bottom of footing), pool enclosures, and walls supporting surcharge loads. Standard residential fences 6 feet or shorter typically do not require a permit but must comply with zoning height and setback rules.

Under California Civil Code §841 (the Good Neighbor Fence Act), adjoining landowners share equal responsibility for the costs of building and maintaining boundary fences. Corona enforces zoning rules but disputes between neighbors are civil matters. Written notice is required before seeking cost-sharing for fence work.

Corona enforces California's Swimming Pool Safety Act (Health & Safety Code §115920+) requiring pool barriers at least 60 inches tall with self-closing, self-latching gates. Two of seven safety features are required for new pools, including isolation fencing, removable mesh fence, ASTM-compliant pool cover, and door/gate alarms. Permits required for all installations.

Corona Municipal Code (Title 17 Zoning) limits residential fences to 3 feet in front yard setbacks and 6 feet in side and rear yards. Fences over 6 feet require a building permit. Corner lots have visibility triangle restrictions, and fences in special districts (hillsides, equestrian) may have additional rules.

Above-ground pools in Corona need building permits if over 18 inches deep or 2,000 gallons (CRC Appendix V). Pool Safety Act applies; small inflatable kiddie pools under the threshold are exempt.

Corona pools must have anti-entrapment drain covers (VGB Act), GFCI-protected wiring (CEC 680), proper bonding, and approved barriers. Public/HOA pools need rescue equipment and signage.

Hot tubs in Corona need electrical permits and CEC 680 compliance. A locking ASTM F1346 cover satisfies the Pool Safety Act enclosure rule. Equipment noise must meet CMC 9.32 limits.

California Pool Safety Act (H&S 115921) requires at least two of seven drowning-prevention features. The most common is a 60-inch enclosure with self-closing, self-latching gates.

Corona requires building permits for pools over 18 inches deep or 2,000 gallons under CMC Title 15. Plans must address structural, electrical (CEC 680), and Pool Safety Act (H&S 115920) compliance.

Garage conversions in Corona require permits and trigger California ADU law (Gov Code 65852.2) if creating a separate unit. SB 1211 and AB 2533 (2025) expand ADU rights and legalize older units.

Corona permits ADUs in residential zones per CMC Chapter 17.85 and California state law. Detached ADUs up to 1,200 sq ft, JADUs up to 500 sq ft. Height 16 ft detached, 25 ft attached. Setbacks reduced to 4 feet. No short-term rental of ADUs.

Carports in Corona require building permits and must meet zoning setbacks (5 ft side/rear, 12 ft height). Front-yard carports are generally prohibited; side and rear yards only.

Tiny homes on permanent foundations in Corona are treated as ADUs under Gov Code 65852.2 and CRC Appendix Q. Tiny homes on wheels (THOWs) are RVs and cannot serve as a primary residence.

Corona allows sheds up to 120 sq ft without a building permit under CRC R105.2, but zoning setbacks (3-5 ft) still apply. Sheds over 120 sq ft need full building permits.

Open outdoor burning of yard waste, trash, or vegetation is prohibited in Corona under both Corona Municipal Code Chapter 8.16 and South Coast Air Quality Management District (SCAQMD) Rule 444. Recreational fires in approved appliances are allowed subject to no-burn day declarations.

Fire pits in Corona must be at least 15 feet from structures per California Fire Code §307.4. Gas fire pits are preferred due to SCAQMD restrictions. Wood-burning fire pits subject to No-Burn Day curtailments.

Removing a Corona street tree requires a free Public Works permit under CMC 12.40 with 1:1 replacement. Private trees are usually exempt unless protected natives in the Hillside Overlay.

CMC Chapter 12.40 makes property owners maintain parkway street trees with 8 ft sidewalk and 14 ft street clearance. A free Public Works permit is required to remove or heavily prune street trees.

Corona DWP enforces CMC 13.32 with no watering 9 a.m.-6 p.m. and stage-based 2-day-per-week sprinkler limits. AB 1572 phases out potable water on non-functional turf at HOAs by 2031.