What counts as a second home (vs. investment)
Lenders distinguish three property types: primary, second home, and investment. The lines matter because rates, down payments, and qualification rules differ for each.
- Primary residence — where you actually live most of the year. Best rates, lowest down payment, most loan options.
- Second home — a property you use personally for at least part of the year, but not your primary. Slightly higher rates and down payments than primary, but better than investment. Cannot be primarily a rental.
- Investment property — held primarily for rental income or appreciation. Highest rates, highest down payments, often qualifies via DSCR.
The "14-day rule" everyone references
For tax purposes, the IRS distinguishes second homes from rental property using a 14-day-or-10%-of-rental-days rule. To keep second-home tax treatment:
- You must use the property personally for the greater of 14 days OR 10% of the days it's rented at fair market value.
- If you exceed those rental days without enough personal use, the property becomes a "rental" for tax purposes — losses become subject to passive-activity rules, mortgage interest treatment changes.
For lending purposes, the rule is different but related. Lenders generally want second homes to be used personally enough to count as recreational/personal property, not income-producing. Renting it out occasionally is fine; running it as a year-round Airbnb is not.
This is where many Florida second-home buyers get crosswise with their lender. They buy a "second home" with the intent to Airbnb it for 30+ weeks a year. That's actually a short-term rental investment property — different loan, different rate, different down payment. Misrepresenting it on the loan application is mortgage fraud. We have the conversation upfront so the loan structure matches the actual use.
Second-home financing details
- Down payment: 10% minimum for most conventional second-home programs. 20% gets the best rates.
- Credit score: 680 minimum, 720+ for the best pricing.
- DTI: Has to handle both your primary mortgage payment and the second-home PITIA. No rental income credit on a true second home.
- Reserves: 2-6 months of PITIA on the second home, in addition to whatever's required for your primary.
- Distance rule: Lenders generally want second homes to be a meaningful distance from your primary — not next door, not in the same neighborhood. The geographic separation supports the "this is a recreational property" claim.
- Rates: Typically 0.25-0.5% higher than primary residence for the same borrower.
Florida-specific second-home considerations
- No homestead, full property tax. The homestead exemption is for primary residences only. Second-home owners pay full property tax on assessed value with no Save Our Homes 3% cap. As assessed values rise, your tax bill rises with them — significantly different from what your homestead-protected neighbor pays.
- Insurance is harder for absentee owners. If you're at the property less than half the year, some carriers consider it higher-risk (less likely to spot leaks, storm damage early). Premiums are sometimes higher; some carriers won't write second-home policies in coastal counties.
- Hurricane season prep. Owning a Florida home you visit twice a year means you need a plan for hurricane prep: a property manager, neighbor, or service that boards up windows and removes outdoor items before storms. Insurers increasingly ask about this.
- HOA approvals. Some Florida HOAs have buyer-approval processes that work differently for non-residents. Application fees, interview requirements, sometimes longer approval timelines.
- Florida second-home buyers are often retirees or part-time residents. If you're age 65+, asset-based qualification programs are common since W-2 income is gone.
Common scenarios
- Snowbird condo in Naples or Sarasota. Used Nov-April, vacant or family-occupied other months. Standard second-home financing. Insurance and HOA are the variable costs.
- Beach house used by extended family. Owner uses it 8 weeks/year; siblings and kids use it the rest. Still qualifies as second home for lending if the owner controls and uses it.
- "Future retirement home" bought early. Buy now, rent occasionally, transition to primary in 5-10 years. Financing as second home; switching to primary later requires a refinance or just continued ownership.
- Beach condo with occasional rental. Owner uses 6 weeks/year, rents 10-15 weeks via Airbnb when not in use. Most second-home programs allow some rental but want it to remain primarily personal use. Beyond a threshold, it crosses into investment territory.
FAQ
Can I rent my second home occasionally?
Yes — most second-home loans allow some rental, especially short-term/personal-network rental. The line is fuzzy. As a general rule, if rental income is more than incidental and you're targeting STR investment economics, you should be on an investment loan, not a second-home loan. We work through the details upfront.
Does Florida tax me on second-home rental income?
Florida has no state income tax, so no. Federal tax still applies, plus Florida's tourist development tax (a per-county tax on short-term rentals). Some counties also require business tax receipts for STRs. Talk to a CPA familiar with Florida STR rules before going down this path.
Can I deduct mortgage interest on my second home?
Yes, subject to the federal $750K total mortgage debt cap (your primary + second combined). State income tax deduction doesn't apply since FL has none. Talk to your CPA about your specific situation.
What if I want to convert my second home into my primary later?
When you change primary residence, you simply start treating the property as your primary — establish residency, file homestead, etc. Your existing second-home mortgage doesn't need to be refinanced for this, though you may want to refinance into a primary-residence loan for the rate improvement.
How does a foreign buyer's second-home loan compare?
A US citizen's second-home loan typically prices about 0.25-0.5% above primary. A foreign national second-home loan is 1-2% above conventional. The qualification process is also more involved. More on foreign national →