New Port Richey, FL Accessory Structures: ADU Rules (2026)
ADU rules in New Port Richey, FL, also called accessory dwelling unit regulations or granny flat ordinances, cover setbacks, owner-occupancy, parking, and permit requirements.
Key Facts
- Units allowed
- One per residential lot
- Max size
- 25% of main house floor area
- Location
- Must be within principal structure
- Waivers
- None permitted
Summary
New Port Richey allows one accessory apartment per single-family lot, built into the main house and capped at 25% of its floor area, with no waivers permitted.
Accessory apartments may be allowed in single-family homes provided that all of the following requirements shall be met: a. No more than one (1) accessory apartment shall be permitted on any residential lot. b. Any accessory apartment shall be located within the principal structure... c. An accessory apartment shall not exceed 25 percent of the gross floor area of the principal structure within which it is located.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 68).
Full Breakdown
The city's Land Development Code permits accessory apartments in single-family homes to provide affordable housing, but only one per residential lot. The unit must sit inside the principal structure, a breezeway or roofed passage connecting it doesn't count as being 'within' the house, and can't exceed 25 percent of the principal structure's gross floor area. The apartment must be designed so the property still reads as a one-family dwelling from outside, and the code allows no variations, adjustments, or waivers to accommodate one.
Violations & Fines
Building an accessory apartment larger than 25 percent of the main house, adding a second unit, or connecting it by breezeway rather than internally violates LDC § 12.07.00 and can trigger code enforcement action.
Frequently Asked Questions
Can I build a detached accessory apartment in New Port Richey?
How big can an accessory apartment be?
Sources & Official References
Other rules in New Port Richey
How New Port Richey compares: Easiest Cities to Build an ADU·Florida rules heatmap·Compare New Port Richey to another location·View the Florida accessory structures overview
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ADU Rules in Nearby Cities
How other cities in Pasco County handle adu rules.