Commercial marinas and dry-stack boat storage facilities combine water-dependent real estate with operating business revenues. Sizing mortgage debt requires evaluating wet slip occupancy, upland boat service income, state submerged land leases, and environmental regulations governing fuel dispensing.
Target Leverage55% to 65% LTV (conservative sizing due to operational business component)
Submerged Land Lease (SLL)State/Tidelands lease granting riparian water rights (must exceed loan term by 15–20+ yrs)
Environmental ReviewSpecialized marine Phase I ESA auditing aboveground fuel tanks, bilge pumpouts, and hull painting
Seasonality ReservesDebt service reserve covering 3 to 6 months of winter revenue downtime in northern markets
Debt Yield Hurdle10.50% to 12.00% Debt Yield on stabilized Net Operating Income
* Appraisals must separate real property slip income from retail boat sales and personal property equipment value.
Revenue Streams: Real Estate Slip Rental vs Operating Income
Commercial lenders bifurcate marina revenues into real property income and operating business income:
Real Property Income: Annual and seasonal wet slip rentals, indoor dry-stack storage fees, and land ground leases. This income is steady, recurring, and capitalized at standard commercial cap rates.
Operating Business Income: Marine fuel dock sales, transient guest dockage, ship store merchandise, boat maintenance labor, and winterization services. Lenders apply higher expense haircuts to variable operating retail revenues.
Submerged Land Leases and Riparian Water Rights
In most coastal and lakefront jurisdictions, the water bottom beneath the docks is owned by the state or federal government. Marinas operate under a long-term Submerged Land Lease (SLL) or Sovereign Submerged Lands authorization.
Lenders require the Submerged Land Lease to be in full compliance, fully transferable, and have remaining tenure exceeding the loan maturity by at least 15 to 20 years, complete with lender notice and cure rights.
Environmental Diligence and Hurricane/Flood Protection
Marine facilities face strict environmental scrutiny. Underwriters require confirmation that fuel storage tanks (USTs/ASTs) have double-wall containment, automatic leak detection, and active clean marina certifications.
In coastal hurricane zones, lenders mandate windstorm insurance, Named Storm deductibles, and catastrophic flood coverage, alongside floating dock engineering reviews for storm surge resilience.
Frequently Answered Questions
Common Questions About Marina & Dry-Stack Boat Storage Commercial Debt Underwriting
Direct, transparent answers regarding underwriting standards, documentation, and process.
Marina Financing
How do lenders size commercial loans on marinas?
Direct Answer
Lenders size marina loans primarily on recurring annual wet slip and dry-stack storage rental income, applying conservative 55% to 65% LTV limits and 10.5% to 12.0% debt yields to account for maritime operational risk.
Variable retail boat sales and fuel margins are discounted or excluded from base debt capacity.
Submerged Land Leases
What is a Submerged Land Lease in marina underwriting?
Direct Answer
A Submerged Land Lease is a state-granted lease permitting the marina to locate docks, pilings, and boat slips over publicly owned water bottoms, which lenders require to exceed loan maturity by 15+ years.
Without a valid submerged land lease, the marina loses the legal right to operate its docks.
Environmental Hazards
What environmental audits are required when financing a boat marina?
Direct Answer
Lenders require marine-specialized Phase I ESAs verifying fuel tank integrity, spill prevention plans (SPCC), clean bilge water pump-out stations, and safe boat bottom antifouling paint washing protocols.
Environmental compliance is mandatory to protect against Clean Water Act liabilities.
Connect with our commercial underwriting team. We provide prompt indicative pricing, leverage sizing, and lender placement strategy upon scenario review.
