Market data · Updated July 2026
The Marathon market, in numbers
The short answer
New-construction waterfront in Marathon, FL trades at roughly $1,000–$1,175 per air-conditioned square foot in 2025–2026. Supply is capped by ROGO at about ten new permits per quarter county-wide, vacation rentals are legal at 7-day minimums, and elevated concrete construction keeps insurance near $8,000–$13,000 per year — the three numbers that define this market.
- New-build $/sq ft (2025–26)
- $1,000–1,175
- New-build $/sq ft (2025–26)
- ROGO permits, all of Monroe Cty
- ~10/qtr
- ROGO permits, all of Monroe Cty
- Min. vacation rental (Marathon)
- 7-day
- Min. vacation rental (Marathon)
- Insurance/yr, elevated concrete
- $8–13K
- Insurance/yr, elevated concrete
Pricing
What the market trades at
The benchmark for this market is new or like-new elevated concrete construction on the water. In 2025–2026 that product traded at $1,000–$1,175 per air-conditioned square foot in Marathon — a 2,500 sq ft home at $2.5M–$2.9M. Older ground-level stock trades lower per foot, but carries insurance costs that can erase the difference within a decade (see the insurance section).
Against that benchmark, the live pricing on this page is worth stating plainly: as of this page’s last refresh, 10 completed residences are available at Marlin Bay Yacht Club at Founders pricing from $1,529,550 to $2,937,288 — an average of about $642 per A/C square foot, versus the $1,000+ market benchmark. This data syncs from the reservation office and updates automatically.
| Product | Typical $/sq ft (A/C) | Notes |
|---|---|---|
| New elevated concrete, waterfront | $1,000–$1,175 | The 2025–26 benchmark for insurable, rentable product |
| Marlin Bay Founders' 13 release | ~$642 (live) | First release of 84 entitled homes; same construction standard |
| Older ground-level stock | varies widely | Lower entry price, materially higher insurance and storm risk |
Supply
ROGO: the number that runs the Keys
The Rate of Growth Ordinance exists to keep hurricane-evacuation clearance time under 24 hours. Its practical effect: roughly ten market-rate building allocations per quarter across all of Monroe County (monroecounty-fl.gov). Around 40 new market-rate homes per year, for an island chain 110 miles long. Land is not the scarce asset in the Keys — the legal right to build is.
That is what a recorded Development Agreement is worth: Marlin Bay’s, recorded with the City of Marathon in February 2024, entitles all 84 homes — 13 standing today, 71 to come — outside the quarterly ROGO lottery.
Income
Rental rules and real revenue
Marathon licenses vacation rentals at 7-day minimums — the most owner-friendly rule in the Keys, where most unincorporated areas require 28-day minimums. That single ordinance difference is why managed waterfront homes in Marathon report roughly $200,000 first-year gross rental income (paraisovacationrentals.com), while similar homes 20 miles away cannot legally serve the weekly-vacation market at all.
Carrying costs
Insurance: the honest line item
Combined windstorm, flood, and homeowners premiums on older ground-level homes can reach $30,000 per year. Elevated, steel-reinforced concrete with impact-rated openings typically runs $8,000–$13,000 combined— and elevation 10+ feet above base flood elevation can qualify for preferred-risk flood rates. The spread between those two numbers, compounded over a decade of ownership, is larger than most buyers’ negotiating range on purchase price. Full breakdown in our insurance guide.
Questions buyers ask
Straight answers
- What does waterfront property cost per square foot in Marathon, FL?
- New-construction waterfront in Marathon traded at roughly $1,000–$1,175 per air-conditioned square foot in 2025–2026. The Founders' 13 release at Marlin Bay Yacht Club prices at approximately $600 per square foot plus lot premium — the discount exists because the developer is pricing the first release of an 84-home community, not because the homes differ in build quality.
- Is Marathon real estate a good investment in 2026?
- Three structural forces support Marathon values: ROGO caps Monroe County to roughly ten market-rate building permits per quarter, so supply is legally constrained; Marathon's 7-day minimum vacation-rental rule is the most owner-friendly in the Keys (most unincorporated areas require 28 days); and managed waterfront homes report roughly $200,000 first-year gross rental income. No market is risk-free — insurance and hurricane exposure are the offsetting costs, detailed below.
- How many new homes get approved in the Florida Keys each year?
- Under the Rate of Growth Ordinance, Monroe County issues roughly ten market-rate allocations per quarter — about 40 per year across the entire Keys — to keep hurricane-evacuation clearance under 24 hours. That is why fully entitled projects like Marlin Bay's 84-home Development Agreement (recorded February 2024) are the scarce asset: the land is available, the right to build is not.
- What is the average home insurance cost in Marathon, FL?
- It depends almost entirely on construction. Older ground-level homes can pay up to $30,000 per year combined (wind, flood, homeowners). Elevated, steel-reinforced concrete homes with impact-rated openings typically pay $8,000–$13,000 combined, and elevation 10+ feet above base flood elevation can qualify for preferred-risk flood rates.
Keep reading
Sources
- · Monroe County ROGO program documentation (monroecounty-fl.gov)
- · City of Marathon vacation-rental ordinance (7-day minimum licensing)
- · FEMA building-performance studies, Hurricane Irma (fema.gov)
- · Managed rental income reporting, paraisovacationrentals.com
- · 2025–2026 Marathon new-construction waterfront comparables (MLS/active listings)
- · Marlin Bay reservation-office live pricing feed (this page auto-updates)
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