Primary Residence Requirement

A primary residence requirement is a local regulatory rule that restricts short-term rental permits to properties where the owner lives as their primary home for the majority of the year. It is one of the most consequential tools in the STR regulatory toolkit — effectively barring pure investment properties from the nightly rental market and redirecting supply toward owner-occupied hosts.

Key Takeaways

• A primary residence requirement limits STR permits to the one property where the owner actually lives most of the year — typically 270+ days
• Cities verify residency through government ID, tax returns, voter registration, utility bills, and annual affidavits
• The rule blocks non-owner-occupied investment properties from obtaining STR permits in covered cities
• Many cities pair this rule with an annual night limit that caps how many days the owner can rent while away
• AirROI data shows New York's median minimum stay reached 25.8 nights after enforcement of its host-present rule — a structural shift that reduced short-stay supply by roughly 90%
• The requirement is spreading from major metros to second-tier markets, reshaping where investor-grade STR operations remain viable

How Primary Residence Requirements Work

The requirement creates a two-tier STR market in any city that adopts it. Owner-occupied hosts — those who live at the property and rent spare rooms or the whole unit while they are away — qualify for permits. Investors who own a property solely as a short-term rental do not.

Requirement	Typical Standard
Days residing at property	270+ days per year (varies; some cities set 183 days)
Documentation required	Government-issued ID, tax returns, utility bills, voter registration
Permits per owner	One primary residence permit only
Verification frequency	Annual renewal with updated documentation; some cities require a mid-year affidavit
Renting while away	Allowed up to the city's annual night cap
Renting while present	Usually unrestricted under the owner-occupied rental category

Enforcement mechanisms have grown more sophisticated. Several major cities now operate data-sharing agreements with booking platforms, cross-referencing permit addresses against listing data. When the permit address and the host's documented residence differ, the listing is flagged for inspection or delisted automatically.

Cities That Enforce Primary Residence Requirements

The requirement is most common in high-demand coastal cities with acute housing pressure, but it has spread steadily to mid-size markets:

City	Rule Details	AirROI Median Min. Nights
New York City, NY	Primary residence required; host must be present during stays under 30 nights	25.8
San Francisco, CA	Primary residence required; 90-night cap per year when host is away	14.7
Los Angeles, CA	Primary residence required; 120-night annual cap (extendable to 180 with approval)	20.7
Denver, CO	Primary residence required; annual affidavit mandatory	14.4
Portland, OR	Primary residence required for standard (Type A) permits	—
Boston, MA	Must be owner-occupied primary residence	—
Seattle, WA	Primary residence operators face significantly fewer restrictions than investors	—

Regulations change frequently. Verify current rules with your local government or planning department.

The minimum-stay data tells part of the story. New York's 25.8-night median sits just below the 30-night legal threshold for stays without host presence — a direct reflection of the host-present rule eliminating most nightly inventory. San Francisco's 14.7 nights and Los Angeles's 20.7 nights reflect different flavors of the same underlying logic: when investor-owned nightly rentals are banned, the remaining supply shifts toward longer engagements.

Primary residence rules rarely eliminate STR activity outright — they convert nightly markets into mid- and long-stay markets, as New York's minimum-stay data makes unmistakably clear.

Contrast those numbers with lightly regulated Gatlinburg, Tennessee, where the median minimum stay is 2.1 nights and no primary residence rule applies, or Nashville, where the median is 5.6 nights under a moderate regulatory framework. The difference is not guest preference — it is the regulatory floor.

Supply Impact: The New York Case Study

New York City's Local Law 18, enforced September 2023, is the clearest evidence of what rigorous primary residence enforcement does to supply. Under Local Law 18, stays under 30 nights require the host to be present — a condition functioning as a de facto primary residence rule for short stays.

AirROI's active listing counts capture the result: listings fell roughly 60%, from approximately 26,775 before enforcement to about 10,500 by early 2026. Short-stay (under 30 nights) listings dropped roughly 90%, per the NYC Mayor's Office. The remaining inventory represents a fundamentally different product — longer stays and a guest profile closer to furnished monthly rentals than vacation rentals.

San Francisco tells a quieter version of the same story. With 4,355 active listings and $273.50 ADR — second highest in the AirROI basket behind San Diego — thin permitted supply supports above-market rates even as investor-owned nightly rentals remain prohibited.

Why Primary Residence Requirements Matter for STR Investors

Acquisition strategy. A primary residence requirement renders the standard investor model illegal unless the property becomes your actual home. Confirm this before purchase — the asset's entire cash-flow thesis depends on it. See our STR investment analysis guide for a pre-purchase regulatory checklist.

Portfolio limitations. The rule is explicitly designed to prevent multi-property STR operations. Investors who want scale must operate in jurisdictions that do not apply the requirement.

Compliance burden. Annual documentation, affidavits, and permit renewals add real administrative overhead. Some cities audit prior-year records — if your utility bills show extended absences, the permit renewal can be denied.

Regulatory trajectory. The small-city ordinance wave of 2026 shows the primary residence requirement spreading from coastal metros into mid-size markets with previously minimal oversight. Markets that feel "lightly regulated today" can shift within a single council cycle.

Strategies for Hosts Under Primary Residence Rules

Maximize permitted nights with dynamic pricing. Use dynamic pricing calibrated to your market's lead time and seasonality to extract maximum revenue from the nights you can legally offer while away.

Consider owner-occupied room rental. Renting spare bedrooms while you are home qualifies as an owner-occupied rental in most jurisdictions and is typically exempt from night caps — expanding your viable booking calendar without touching the residency rule.

Track your night count rigorously. Cities that pair primary residence rules with annual night limits (San Francisco's 90 nights, Los Angeles's 120 nights) increasingly cross-reference booking platform data with permit records at renewal.

For a full walkthrough of local STR compliance, see our STR regulations guide for hosts. The tax burden by market analysis covers how TOT obligations layer on top of permitting constraints.