"Where is short-term-rental legal in the US?" is the wrong question. STR legality is determined at the city or county level — and the rules change yearly. Buying a property in a city that bans STR overnight (NYC, 2023) can wipe your investment. This guide is what every new host MUST verify before signing a lease or closing a property.
4 tiers of STR friendliness in the US (2026)
| Tier | Example markets | What to expect |
|---|---|---|
| Tier 1: STR-friendly | Florida (most), Texas, Tennessee (Nashville varies), Arizona | Permit required but obtainable. Hotel tax collection. |
| Tier 2: regulated but workable | Denver, San Diego, Portland, Charleston | Primary residence requirement OR registration cap. Workable if you understand rules. |
| Tier 3: heavy restriction | Boston, Seattle, SF, Honolulu | 30-day minimums for non-owner-occupied OR strict registration limit. |
| Tier 4: effectively banned | NYC (2023 Local Law 18), Santa Monica, parts of LA, Quebec City | Stays under 30 days illegal without near-impossible licensing. |
8 things to verify BEFORE you sign or close
1) City STR ordinance (the actual law)
Search "[city name] short term rental ordinance" — look for the actual municipal code, not blog summaries. Ordinances update; what was legal in 2024 may not be in 2026.
2) Primary residence requirement
Many cities (Boston, SF, Portland) require the host to live at the property full-time. Investment STRs are illegal in these. Verify whether you intend to live there.
3) Permit / registration system
Many cities require a paid annual registration ($50-$1000). Some have caps (e.g., only X licenses per year). Verify availability + cost.
4) Zoning
STR may be banned in residential zones (R1/R2) but allowed in mixed-use (MU) or commercial (C). Check the zoning of the specific property address, not the neighborhood.
5) HOA rules (private)
City may allow STR but HOA may ban. Get the HOA bylaws in writing before closing. Many HOAs explicitly ban rentals under 30 days.
6) Condo / co-op board rules
Condo bylaws can ban STR even if city allows. Some condos require 12-month minimum lease.
7) Lease clause if renting (subletting)
If you're a tenant planning to STR-sublet, read your lease. 80%+ of residential leases ban subletting / STR. Operating against the lease = eviction risk.
8) Hotel / occupancy tax obligations
Many jurisdictions require hosts to collect and remit hotel tax (3-15% depending on city). Airbnb collects some automatically (varies), but you may still owe state/local taxes separately.
When to walk away
- City code says "transient rentals prohibited in R1 zones" and your property is R1 → walk away.
- HOA bylaws ban rentals under 30 days and the board has rejected previous variances → walk away.
- Permit waitlist 12+ months → defer purchase or operate as long-term until permit issues.
- Recent enforcement actions in the city (check local news for "Airbnb crackdown") → high risk.
Most common mistakes new hosts make
- Buying first, checking regulation second — locked into property + restrictive rules.
- Trusting realtor's "you can Airbnb it" — realtors aren't STR lawyers. Verify with planning office directly.
- Operating without permit "until they notice" — first complaint = listing taken down + back taxes + fine.
- Ignoring HOA rules — HOA can sue + fine + lien on property.
- Not collecting hotel tax — back-tax assessment can hit $5,000+ over a year.
Next steps
If you're in the city / market evaluation phase, use the Airbnb income calculator to estimate revenue for the markets that pass your legality check. Use the sample report to see what a real analysis looks like.
Sources: city ordinance summaries from BiggerPockets STR guide (2025), AirDNA market regulation tracker, and direct city planning office verification (2026-04 to 2026-05). This article is general information only and not legal advice. Always verify with the city planning department before any commitment.