How to Buy a Marina Business in 2026

Marinas are one of the most misunderstood small business assets I work on. Buyers show up thinking they're acquiring a boat rental operation or a waterfront restaurant, and sellers market them as lifestyle businesses. The reality is that most marinas are hybrid real estate and operating business transactions with significant environmental risk, complex regulatory overlays, and cash flows that depend on four month's worth of slip rentals plus whatever ancillary services the operator has bolted on.

I've worked on marina acquisitions from small freshwater operations on the Great Lakes to large saltwater facilities in Florida and the Chesapeake. The fundamentals are consistent: you're buying land, water access, infrastructure, and a customer base, and each of those four components needs its own diligence workstream. Miss any one and you can turn a $3M deal into a $5M liability very quickly.

How Marinas Actually Make Money

A typical 150-200 slip marina in a four-season market generates revenue from five buckets, roughly in this order of magnitude:

• Seasonal and transient slip rentals (45-65% of revenue): Annual contracts running $60-$180 per foot per season in the Great Lakes, $140-$280 per foot in Florida and the Southeast, $200-$450 per foot in prime Northeast markets (Newport, Sag Harbor, Nantucket).
• Dry storage and winter storage (15-25%): Haul-out, wash, shrink-wrap, indoor or outdoor dry storage for 5-6 months. $45-$90 per foot for outdoor; $90-$180 per foot for indoor climate-controlled.
• Fuel sales (5-20%): Low margin (often $0.25-$0.60 per gallon gross) but high traffic. Environmental exposure comes with this line.
• Service and repair (5-15%): Labor at $105-$165/hour, parts markup. The most operationally complex piece of a marina.
• Restaurant, ship store, boat sales, or rentals (0-25%): Highly variable. Often subleased to third parties. Some marinas live or die on the restaurant.

Understanding revenue concentration is step one. A marina where 75% of revenue is annual slip contracts is a very different risk profile from one where 40% is fuel and transient traffic. The contract-heavy marina has cash flow visibility you can bank on; the fuel-heavy marina lives and dies by weather, fuel prices, and discretionary boating spend.

Valuation: It's Mostly Real Estate

Marina valuation in 2026 is primarily a real estate transaction. The operating business is typically valued at 3-5x EBITDA, but the real estate carries significant standalone value because waterfront land with marina entitlements is nearly impossible to replicate.

Cap rates for marina real estate have compressed significantly in the last decade as institutional capital entered the space. Major platforms like Suntex Marina Investors, Safe Harbor Marinas (owned by Sun Communities), and Legend Dry Stack are buying stabilized assets at 6.0-8.0% cap rates in Class A markets and 8.0-10.0% in secondary markets. Combined with the operating business multiple, total enterprise values often run 6-9x trailing EBITDA for quality marinas and 4-6x for smaller or undersupplied operations.

The institutional roll-ups have driven seller expectations up significantly. If you're buying a marina directly from a retiring owner-operator in a secondary market, you're still likely competing with a Safe Harbor bolt-on offer. Know that going in.

Slip Lease Assignment and Tenant Base

The slip agreements are the core contractual asset you're acquiring. Most marinas operate on one-year seasonal agreements that automatically renew unless either party provides notice. That continuity is the good news. The diligence challenge is figuring out how many slip holders have been there for how long, and what your real risk of attrition is after the ownership change.

Pull the slip roster and categorize every slip holder by tenure: 10+ years, 5-10 years, 2-5 years, 1-2 years, new this season. A marina where 60%+ of slip holders have been there 5+ years is highly sticky — boaters don't move their boats casually because the logistics are miserable. A marina with 40%+ turnover every year is either newly built, poorly managed, or in a declining market. Price those differently.

Check the agreements for assignment language. Most marina slip agreements are between the slip holder and the marina operator, and they transfer automatically on sale. But some have termination-on-sale clauses the seller may not have mentioned. Read them. Every one.

Wait list value. A marina with a 40-120 boater wait list is meaningfully more valuable than a fully-occupied marina with no wait list, even at the same current revenue. The wait list is forward revenue visibility and pricing power. Ask for documentation — real wait lists, not the owner's verbal assurance.

Rate history. Has the seller been raising rates? A marina that's been flat on rates for 3-5 years while labor and insurance costs climbed is a value-add opportunity — you can push rates 10-20% in year one with minimal attrition if you're still below the local market. Survey nearby marinas before you underwrite rate growth assumptions.

The Environmental Problem

Every marina has environmental exposure. Every single one. The question is not whether your target has environmental issues — it's how bad they are and how much the remediation will cost. This is the line item that kills marina deals more than any other.

Underground storage tanks. If the marina sells fuel, it has tanks. Modern double-walled fiberglass tanks with leak detection are relatively clean. Older single-wall steel tanks installed before 1998 are ticking liabilities. Federal EPA rules required upgrade or replacement years ago, but enforcement is uneven. A tank found to have leaked contamination into groundwater can trigger $200K-$2M in remediation costs. Non-negotiable diligence item: full Phase I environmental, Phase II soil and groundwater sampling, and tank tightness testing.

Historical fill and sediment contamination. Many marinas were built decades ago on filled land, and the fill material sometimes includes industrial debris, petroleum-contaminated soils, or worse. Sediment in slip areas can contain legacy contamination from bottom paint (tributyltin, copper) and fuel spills. Dredging permits are extremely difficult to obtain if sediment is classified as contaminated — which can block future expansion and is expensive to dispose of properly.

Current and past uses. Marinas built on former shipyards, industrial sites, or fueling stations carry legacy exposure. Pull historical aerial photos and Sanborn maps. A thorough Phase I will cover this, but ensure your environmental consultant is marina-experienced. Firms like GZA, AECOM, ERM, and Tighe & Bond do marina work. Budget $8K-$25K for a thorough Phase I plus limited Phase II.

Indemnification and insurance. Even after diligence, buy environmental insurance. Pollution legal liability policies for marinas run $4K-$15K per year for $5M-$10M in coverage. Required by most lenders anyway. Negotiate an environmental indemnity from the seller with a specified survival period (3-5 years post-closing is standard) and escrow 2-5% of purchase price for 24 months.

Real Estate and Regulatory Diligence

The regulatory overlay on marina properties is unlike anything else in small business M&A. You need specialized counsel.

Submerged land lease. In most states, the land beneath the water is state property, and the marina operates under a submerged lands lease or equivalent. These leases have remaining terms, renewal provisions, rent escalators, and assignment requirements. In Florida, for example, sovereign submerged lands leases are managed by DEP and have 5-year terms with specific renewal criteria. In Maryland, riparian rights attach to upland ownership but specific structures may require separate tidal wetland licenses. In the Great Lakes states, bottomland ownership varies. Your marina counsel needs to confirm the submerged lands lease transfers cleanly and has sufficient remaining term (ideally 10+ years).

Army Corps of Engineers permits. Any dock, pier, or bulkhead requires a Corps permit under Section 10 of the Rivers and Harbors Act. Pull the permit file. Confirm all existing structures are permitted. Unpermitted structures are a major liability — the Corps can require removal, and a future sale will require the new buyer to address it.

Zoning and entitlement. Waterfront zoning is notoriously restrictive. Confirm the current use is conforming. Check whether any future expansion, rebuild after storm damage, or change of use is permitted by right or requires a variance. Post-storm rebuilds are a real issue on hurricane-exposed coasts — some jurisdictions require compliance with current elevation and resilience standards that can make reconstruction economically infeasible.

Wetlands and SAV. Submerged aquatic vegetation (seagrass beds) is federally protected. Expansion or dredging near SAV is effectively blocked in most states. Get the current SAV survey; if it's older than 3 years, commission a new one.

Financing a Marina Acquisition

Marinas are financeable but the lender universe is narrower than for standard commercial real estate. Three realistic paths.

SBA 7(a) and 504. For deals under $5M (7(a)) or under $15M total project (504), SBA is the most common path for independent buyers. Live Oak Bank is the dominant marina SBA lender — they've financed more marinas than any bank in the country and have specialists who understand the asset class. Celtic Bank and Byline are also active. Structure is typically 10% buyer equity, 40% SBA debenture (504) or guaranteed portion (7(a)), balance from the bank. Expect SBA underwriters to require 1.2-1.4x DSCR, full environmental diligence, and tail liability insurance.

Conventional and balance sheet bank loans. Regional banks with marina experience — First Foundation, Merchants Bank, Webster — provide balance sheet loans for larger deals. Terms run 5-10 years at 65-70% LTV, SOFR + 3.0-4.5% or fixed in the 7-8% range. Full recourse is standard.

Seller financing. More common in marinas than most asset classes because the seller pool skews toward 65-75 year old owner-operators looking for steady retirement income. A seller note of 10-25% at 6-8% interest on a 5-10 year amortization is often achievable and materially improves your equity requirement.

Read my full guide to financing business acquisitions for how to stack these pieces together.

The Deals Worth Doing

The best marina acquisitions I've worked on shared a profile: 120-300 slips, high annual tenure (60%+ of slips held 5+ years), an active wait list, modern fuel infrastructure with clean Phase II, remaining submerged lands lease term over 15 years, conforming zoning, owner-operated by someone ready to retire, and rates 10-20% below local market. At 6-7x EBITDA with SBA 504 financing, these deals produce mid-teens levered returns with operational upside from rate optimization alone.

Deals to walk away from: short remaining submerged lands lease, unresolved environmental findings, unpermitted structures, declining tenure, fuel tanks over 25 years old without replacement planned, or regulatory exposure around dredging. These are not cheap deals — they're capital traps wearing a waterfront view.

Before you submit an LOI, run the marina through our valuation calculator to benchmark the enterprise value against comparable transactions. Marina sellers have watched Safe Harbor roll up the industry and often anchor to institutional cap rates that don't apply to non-institutional assets. The data will tell you where the real market clears.