How Much Does It Really Cost to Live in the Florida Keys in 2026?

Executive Summary

Living in the Florida Keys is very expensive by U.S. standards. Even modest homes cost on the order of $1 million or more, taxes and insurance are high, and transportation and utilities are costly. We estimate total monthly budgets (base-case) roughly as follows:

• Single renter: ~$3,500–4,500 (Marathon–Key West), or ~$42k–$54k per year.
• Single homeowner (mortgaged): ~$6,000–10,000 per month (depending on island), or ~$72k–$120k/yr.
• Couple homeowner (mortgaged): ~$7,500–12,000 per month, or ~$90k–$144k/yr (larger home, two incomes/assets).
• Retired homeowner (own outright): ~$3,500–7,000 per month, or ~$42k–$84k/yr (no mortgage).

Key costs (housing payment, taxes, insurance, utilities, groceries, transportation, HOA, etc.) vary by island: Key West and Islamorada are most expensive, Lower Keys (Big Pine, Cudjoe, etc.) least. We also consider short-term rental income: e.g. a Key West vacation-home might gross $160k+/yr at 72% occupancy, offsetting costs. Our analysis includes “best/base/worst” scenarios (see tables). All costs are for 2026 unless noted.

Assumptions (base case): 30-year mortgage at ~7.0% (Freddie Mac) with 20% down; Monroe County aggregate millage ~3.40% (tax rate); average homeowners insurance ~$5–10k/yr (non-waterfront) or up to $15–20k (oceanfront); flood insurance mandatory in Special Flood Hazard Areas (FEMA); electricity ~$0.20/kWh; Internet $60/mo; utilities (water/sewer) ~$50–100/mo; groceries ~$500/mo (single) to $800/mo (couple); gas ~$3.50/gal; car insurance ~$100/mo per vehicle; etc. (Worst case uses higher interest, insurance, fuel, and no rental offsets; best case uses lower values or offsets.)

Housing & Mortgage Assumptions

We assume typical home prices (median/sale) are about $1.0–1.5 million. Coldwell Banker reports the average Keys home sold for $1.432 million in Q1 2026. Key West tends to be highest (often well above $1M for a modest house), Marathon/Islamorada mid-range, Lower Keys lowest. For a $1.2M sale with 20% down ($240k) at 7% the monthly principal+interest is roughly $8,000; a 3.4% tax adds ~$3400/yr (≈$280/mo); insurance ~$500/mo; so total house payment ~$8,800/mo. By contrast, a $600k home (loan $480k) yields ~$3,600/mo mortgage, +$1,800/yr taxes (+$150/mo) + insurance (+$300/mo) = ~$4,050/mo total. (We detail each below.)

Single Renter (base)

Rents are high. Studio/1BR apartments run ~$2,000 in Lower Keys to ~$3,500–4,000 in Marathon/Key Largo, and $4,000+ in Key West/Islamorada. In base case we assume a middle-market 1BR at about: Key West $4,500; Islamorada $4,000; Marathon $3,000; Key Largo $3,200; Lower Keys $2,200 per month. Add utilities/Internet ~$300 (electric $150, water $50, internet $60, waste $25), plus phone $80, groceries $500, transit (car) $200, other (trash/pets) $50. Total single-renter base budget ~$4,630–5,630/mo ($55k–68k/yr) in Key West to ~$3,330–4,330 in Lower Keys.

Worst case: large 2BR ($5,500/mo in KW) + high utilities (+$400), car costs (+$300), leads to ~$6,500/mo.

Best case: roommate share or studio ($2,500/mo in Marathon), minimal car ($1,500 car expenses), yields ~$3,300/mo.

Single Homeowner (mortgaged)

One person owning a small home or condo. Assume 2 beds/1 bath. House prices by location (assumption): Key West ~$1.5M, Islamorada ~$1.2M, Marathon ~$800k, Key Largo ~$900k, Lower Keys ~$600k. With 20% down, loans are 80% of those. Mortgage (@7%) and other costs:

Mortgage (P&I): A $1.2M loan → ~$7,900/mo; $960k loan (for $1.2M home) → ~$6,325; $640k loan → ~$4,225; $720k loan → ~$4,750; $480k loan → ~$3,150. (Exact: $M = $P * 0.00583/(1–(1.00583)^–360)).

Taxes: 3.4% of purchase/yr. E.g. $1.5M → $51k/yr ($4,250/mo); $800k → $27.2k/yr (~$2,267/mo); etc.

Insurance: base homeowner+wind+flood. For non-waterfront assume ~$5–8k/yr ($417–$667/mo). Oceanfront or larger homes easily $10k–15k ($833–$1,250/mo).

HOA/maintenance: If condo, maybe $200–400/mo; if house, assume $150/mo maintenance reserve (painting, AC, etc).

Utilities/Internet/phone: ~$400/mo total ($200 elec, $50 water, $60 internet, $90 phone).

Groceries: ~$500/mo (single).

Transport: ~$200/mo (fuel, insurance) for one car plus occasional insurance increase.

Trash/sewer: $25–50/mo.

Storm prep: estimate saving $100/mo (for shutters, generator, clean-up).

Total (base): Key West ~ mortgages $7,900 + tax $4,250 + ins $600 + util $400 + other $850 = $14,000/mo ($168k/yr). Marathon ~ $4,225 + $2,267 + $417 + $400 + $850 = $8,160/mo ($98k/yr). Islamorada ~ $6,325 + $3,400 + $500 + $400 + $850 = $11,475/mo. Key Largo ~$4,750 + $3,060 + $500 + $400 + $850 = $9,560/mo. Lower Keys ~$3,150 + $1,700 + $417 + $400 + $850 = $6,517/mo.

Worst case: Higher rate (8%), insurance ($1,000/mo), HOA ($300), expensive utilities/food → add ~$1,000–1,500. Key West ~$15.5k/mo.

Best case: Lower rate (6%), homesteaded (small tax discount), wind-mitigation credits ($400 credit), smaller home → maybe 20% below above (~$11k in KW, $6k in Marathon).

Couple Homeowner (mortgaged)

Two-income family in a larger home (e.g. 3BR/2BA). House prices higher (assume ~25% above single-owner case). Mortgage and taxes scale similarly; utility/grocery roughly 1.5× single; transportation often two cars.

Mortgage: E.g. $1.8M home, loan $1.44M → ~$9,500/mo; $1.0M (680k loan) ~$7,000; $1.125M (900k loan) ~$7,000; etc.

Taxes: 3.4% on higher price. E.g. $1.8M→$61k/yr ($5,083/mo).

Insurance: Larger, say $1,000–1,500/mo (multiple policies).

HOA/maintenance: Condo $300–600; house $250/mo.

Utilities: ~$500/mo.

Groceries: ~$800/mo (for 2 adults).

Transportation: $300–500/mo (2 cars).

Other: (childcare/school not included unless noted).

Total (base): Roughly $9,500 + $5,083 + $1,100 + $500 + $800 + $400 ≈ $17,383/mo in Key West (≈$208k/yr). Lower-cost areas might be 30–40% less.

Retired Homeowner (own outright)

No mortgage, fixed home (often smaller one-story). Still pay taxes, insurance, utilities, etc. Assume moderate home price.

Taxes: Same 3.4% on market value (or assessed). E.g. $800k home → $27k/yr ($2,250/mo).

Insurance: Even seniors need full coverage (or face major loss). Use ~$500–$800/mo.

HOA/maintenance: Can be substantial if no mortgage (higher reserve). We budget $300–400/mo.

Utilities: Possibly lower usage, say $300/mo electricity/water.

Groceries/health: ~$600/mo (basic food) + we ignore healthcare.

Transport: $200–300/mo (one car, occasional check-ups).

Storm reserve: $100/mo.

Total (base): For a $800k home: $2,250+$600+$350+$300+$600+$250+$100 ≈ $4,450/mo (~$53k/yr) on the low end (Lower Keys case). In Key West, a $1.2M home yields ~$8,000/mo with insurance, taxes, etc.

Short-Term Rental Offsets

Many Keys owners offset costs by renting out their property or part of it. For example, a Key West home legally rented as a vacation rental can earn roughly $163,000/year on average (ADR ≈$359, 72% occupancy). Even a couple weeks’ rental at seasonal rates can cut bills. In our scenarios, homeowners who lease out a room or weekend could reduce net cost by several hundred dollars monthly; full-time vacation rentals (where allowed) can cover most or all housing costs. (Regulations are strict: Key West requires a special vacation rental permit per unit and strict safety rules, and Islamorada/Key Largo have their own limits.)

Cost Comparison Table (Monthly, Base Case)

These numbers break down roughly as: Housing (rent or mortgage+taxes) dominates for owners (often $4k–$12k/mo), while rent dominates for renters. Other categories (insurance, utilities, food, transport) together add roughly $1,000–$2,000/mo per household. Key West is ~50–80% costlier than Marathon or Lower Keys; Islamorada/Key Largo are mid-tier. See “Methodology” below for details.

Sensitivity Scenarios

Our base cases above use mid-range assumptions. Best-case: lower 30-yr rates (~6%), smaller homes, lower insurance (wind-mitigation credits), minimal cars, some rental income. In that case, budgets could drop ~15–25%. Worst-case: high 30-yr rates (~8%), larger homes, max flood/wind insurance, two vehicles, no rental income; costs could rise ~20–30% above base.

Sources & Methodology

We used local market data and official sources to estimate each line-item:

• Home prices & sales: Coldwell Banker reports Keys-wide Q1 2026 average sale price ~$1.43M (we assume medians roughly ~$900k–1.2M depending on island).
• Mortgage rate: Assumed ~7% for 30-year fixed (Freddie Mac PMMS; current rates ~7% in late 2026).
• Property taxes: Monroe County FY2027 aggregate millage ≈3.3975%.
• Insurance: Citizens Property Insurance 2026 data shows Monroe wind-only premiums ~$2,948 (avg); full-coverage usually 2–4× wind-only. Keys homeowners face ~$5k/yr (modest) to $15k–20k/yr (waterfront). Flood premiums (NFIP) ~1–2% of insured value for VE/AE zones.
• Utilities: Keys Energy & others: assume $0.20/kWh for electricity; modest water/sewer fees (~$50/mo); internet/phone ~ $60–100/mo (from national averages).
• Waste/HOA: Trash pick-up ~$25/mo; HOA fees $0–400 depending on condo.
• Groceries & transport: Baseline from U.S. BLS data adjusted 10% above national for Keys’ inflation. Gas $3.50–4.00/gal in 2026 (AAA data). Auto insurance about Florida average ($120/mo).
• Short-term rental revenue: Key West data from RedAwning (AirDNA-based): ADR ≈$359, Occ. ≈72%, gross ≈$163k/yr.

See the above assumptions within each section. All figures are estimates to illustrate typical Keys budgets; actual costs depend on exact location, home, lifestyle, and year-to-year changes.