When it comes to mobile home park investing, the deal you see on paper is rarely the deal you get on closing day. That gap — between what a seller presents and what you actually discover — is exactly why mobile home park due diligence matters so much.

This checklist covers 25 things every buyer should verify before signing on the dotted line. Whether you’re buying your first mobile home park or your tenth, skipping any of these can cost you far more than the time it takes to check them.

For a broader look at how to approach mobile home park investing from the ground up, see our complete mobile home park investing guide.

Part 1: Physical and Infrastructure Due Diligence

The physical condition of a mobile home park is often where deals live or die. Infrastructure problems — especially utility systems — can turn a great-looking deal into a money pit fast.

1. Confirm the Utility Type: City Water or Private Well?

City water connections are far preferable to private wells. Wells require maintenance, can fail, and create environmental liability. Always verify the water source and get documentation from the utility provider confirming service.

2. Confirm Sewer Type: City Sewer, Septic, or Lagoon?

Septic systems and lagoon systems are the two biggest red flags in mobile home park infrastructure. A failing lagoon can trigger an EPA enforcement action. City sewer is the gold standard — always verify through the municipality directly, not just the seller’s word.

3. Inspect All Roads and Confirm Ownership

Are the roads paved or gravel? Private or public? If roads are privately owned by the park, you’re responsible for maintenance and repair. Get a repair cost estimate from a local contractor and factor it into your underwriting.

4. Assess Electrical Infrastructure: Master Metered vs. Sub-Metered

Master-metered parks (where the park pays one electric bill and bills tenants back) carry more risk than individually metered parks where each tenant has their own account with the utility company. Sub-metering is valuable — it eliminates utility billing disputes and makes the park easier to operate.

5. Evaluate the Condition of Park-Owned Homes

If the seller owns homes on the lots (not just the land), inspect each one. Park-owned homes add complexity, liability, and deferred maintenance cost. Older, deteriorated units often need to be replaced — which can run $40,000–$80,000+ per home depending on the market.

6. Count Vacant Lots and Assess Infill Potential

Vacant lots are both a risk and an opportunity. Low current occupancy means less cash flow today, but infill potential can significantly increase the park’s value over time. Verify how many lots are ready to accept new homes versus how many need infrastructure work first.

7. Order a Phase I Environmental Site Assessment

A Phase I environmental assessment is standard practice in commercial real estate due diligence. It screens for recognized environmental conditions (RECs) — things like underground storage tanks, historical industrial use, or nearby contamination. If the Phase I flags anything, a Phase II assessment (actual soil/water testing) may be required.

8. Check Flood Zone Status via FEMA Maps

Run the property address through FEMA’s Flood Map Service Center. If any portion of the park sits in a 100-year flood zone (Zone AE or AO), flood insurance will be required and may be expensive. Parks with significant flood exposure carry higher long-term risk.

Part 2: Financial Due Diligence

Sellers want to maximize their sale price. That means you need to independently verify every number in their financial presentation — especially the rent roll and income figures.

9. Verify the Rent Roll Tenant by Tenant

Ask for a full rent roll showing every lot, the tenant name, their monthly lot rent, and whether they’re current or delinquent. Then verify it. Walk the park. Count the homes. Talk to residents if needed. Discrepancies between the stated rent roll and reality are common and often significant.

10. Request 12–24 Months of Bank Statements

Don’t rely on profit-and-loss statements alone — they’re easy to manipulate. Request actual bank statements so you can verify cash deposits against the stated rent roll. Revenue that doesn’t show up in deposits didn’t happen.

11. Review 12 Months of Utility Bills

If the park pays for water, sewer, electric, or trash, get copies of all utility bills for the past year. These are often understated in seller financials. Utility costs can be one of the largest operating expenses in a mobile home park and dramatically affect net operating income.

12. Get 2–3 Years of Tax Returns (If Owner-Operated)

If the seller has operated the park personally, their Schedule E from IRS filings will reflect the actual income and expenses they reported to the government. These are harder to falsify than seller-prepared financials.

13. Analyze Occupancy Rate and the Trend

Current occupancy matters, but the trend matters even more. Is occupancy rising, flat, or declining? A park at 80% occupancy heading up is very different from one at 80% heading down. Ask for 3 years of occupancy history.

14. Compare Current Lot Rents to Market Rates

One of the most common value-add opportunities in mobile home park investing is below-market lot rents. If the park is charging $300/month when comparable parks in the area charge $450, there’s significant upside — but only if the market can absorb the increase. Research what comparable properties charge and build your assumptions conservatively.

15. Estimate Deferred Maintenance Costs

Walk the park with a contractor or experienced operator and price out what it would take to bring everything up to good condition. Deferred maintenance is almost always understated in seller presentations. Build a realistic capital expenditure estimate before finalizing your offer.

Part 3: Legal and Title Due Diligence

16. Order a Title Search and Title Insurance

A clean title is non-negotiable. Work with a commercial real estate attorney to conduct a title search and purchase title insurance at closing. This protects you from claims or liens that may not have surfaced in the seller’s disclosure.

17. Verify Zoning — Is Mobile Home Park Use Permitted?

Confirm with the local planning department that the property is currently zoned for mobile home park use AND that continued use is permitted. Some older parks operate as legal nonconforming uses — meaning if the park were ever abandoned or substantially rebuilt, it might not be permitted to reopen as a mobile home park. This is a material risk to understand before buying.

18. Check for Pending Code Violations or Health Department Orders

Request copies of any outstanding code violations, health department orders, or notices of violation from the seller. Then independently verify with the local municipality. Undisclosed violations can become the buyer’s problem at closing.

19. Review All Tenant Lease Agreements

Are tenants on month-to-month agreements or long-term leases? Are the leases current and properly executed? Are there any unusual terms — like agreements to never raise rent — that could limit your ability to improve the park’s income? Review every lease before closing.

20. Check for Liens, Easements, and Encumbrances

The title search will surface most of these, but also ask the seller directly: Are there any mechanic’s liens, easements granted to utility companies, pipeline easements, or other encumbrances on the property? Utility easements across key areas of the park can limit development flexibility.

Part 4: Market and Operational Due Diligence

21. Measure Drive Time to the Nearest Major Metropolitan Area

Mobile home parks closest to employment centers — cities with 100,000+ population within 30–60 minutes — tend to have stronger tenant demand, lower vacancy, and better long-term rent growth. Know exactly where the park sits relative to employment, retail, and services. We covered this in depth in our post on how to evaluate a mobile home park’s location.

22. Survey Comparable Mobile Home Park Lot Rents

Call competing mobile home parks within 10–15 miles. Pose as a prospective tenant and ask about availability and pricing. This is the most reliable way to understand the local market rate — and it takes less than an hour to do. Your cap rate assumptions depend on realistic rent projections.

23. Research Local Permit Activity and Expansion Potential

If there are vacant lots you’re planning to infill, check whether the municipality requires permits for bringing in new homes and how long that process typically takes. Some jurisdictions are friendly; others have effectively made it impossible to add new manufactured homes. Know before you project infill income.

24. Assess the Current Management Structure

Is there an on-site manager? If so, will they stay after the sale? What are they paid, and what do they handle? A park with no management infrastructure — where the seller has been handling everything personally — requires you to budget for and hire management before or immediately after closing. Factor that into your operations budget.

25. Understand the Tenant Base

What is the income profile of current tenants? Are there a significant number of tenants on Section 8 housing vouchers or other housing assistance? What is the general delinquency history? Understanding who lives in the park — and whether they’re stable, long-term tenants — helps you project realistic future income and vacancy.

Putting It All Together

A thorough mobile home park due diligence process typically takes 30–60 days. That timeline gives you enough time to order reports, review documents, conduct walkthroughs, and get contractor estimates without rushing.

The goal is simple: eliminate surprises. Every mobile home park has issues — the good deals are the ones where you understand what those issues are before you buy, not after. Many a deal has fallen apart mid-due-diligence because a buyer discovered utility infrastructure that needed full replacement, or a rent roll that turned out to be significantly inflated.

That’s not failure. That’s the process working correctly.

If you’re thinking about what it costs to actually get into a mobile home park deal, take a look at our breakdown of how much money you need to invest in a mobile home park — it covers both active acquisition and passive investment entry points.

And if you want to understand how mobile home parks hold up when the economy turns, our post on how mobile home parks perform during a recession is worth reading before you commit capital.

Have questions about the due diligence process or want to talk through a specific deal? Reach out here — we’re happy to share what we’ve learned from evaluating and operating mobile home parks across multiple states.