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The Mobile Home Park Due-Diligence Checklist

Due diligence is where a mobile home park (MHP) acquisition gets confirmed, repriced, or killed. The list of things that can go wrong is long and specific — infrastructure quietly failing for years, rent rolls that don't match what residents actually pay, regulatory caps the seller didn't mention, environmental issues from buried oil tanks. None of it shows up on a broker's flyer.

This checklist is built around the items that most often move price or kill deals. It is not exhaustive, and nothing here replaces a qualified property condition assessment, environmental study, or attorney's review — but walking every section before closing helps catch the issues that most often blow up MHP acquisitions.

1. Legal and Regulatory

Rent-control exposure is among the most common items investors underestimate, and the regulatory environment around manufactured-housing communities has been tightening in several jurisdictions.

• Confirm the rent-control status down to the city or county level. A state-level "no rent control" does not clear a specific park. Map the address to the actual ordinance that applies.
• Pull the local ordinance, not just a summary. Read it for the formula (COLA-based, CPI-based, flat percentage), the timing of allowable increases, and any vacancy-decontrol provisions.
• Check for active or proposed legislation in the city and surrounding jurisdictions. A market that re-regulates during the hold changes the deal.
• Verify zoning allows continued use as a manufactured-housing community. Some parks operate under legal-nonconforming status — meaningful if you ever want to add lots or rebuild.
• Confirm permits for site improvements, septic systems, well operations, and any commercial activity on site.
• Review the rules, regulations, and resident lease template for provisions that conflict with state law or local ordinance.
• Pull title and survey. Confirm there are no easements, encroachments, or boundary issues that affect site count or operations.
• Check for litigation involving the park, current owner, or management — past or pending.

2. Infrastructure

Infrastructure is where MHPs hide deferred liabilities. Roads, utilities, and water/sewer systems can carry six-figure replacement costs that aren't visible from the curb.

• Water source and system. Municipal connection, private well, or both? Test the water. Document the age of distribution lines, pumps, and treatment equipment. Private wells are a meaningful operational risk.
• Sewer. Municipal, private septic (per lot), or central treatment? Central treatment is the highest-risk category — costly to maintain, regulated by state environmental agencies, and capable of generating surprise capex.
• Lift stations if present — age, condition, redundancy, maintenance history.
• Electric. Master-metered or sub-metered? Master metering means you pay the utility and bill back to residents — confirm the back-billing actually works and is collectible.
• Gas, if applicable. Same sub-metering question; propane tanks add considerations.
• Roads. Walk them. Note potholes, drainage issues, and apparent surface age. Asphalt resurfacing is a frequent five-figure expense per phase.
• Storm drainage. Confirm a working storm system and look for evidence of flooding (water marks on skirting, erosion).
• Common areas. Clubhouse, laundry, pool, mailboxes — condition, code compliance, ADA exposure.

3. Property and Physical Condition

• Order a Property Condition Assessment (PCA) from a qualified third party.
• Order a Phase I environmental study at minimum. Look for buried oil tanks, prior commercial uses, adjacent dry cleaners, upstream agricultural use, or anything in the chain of title that suggests Phase II may be warranted.
• Inspect every park-owned home. Each is a separate physical asset; condition varies. Document age, condition, occupancy, and apparent capex needs per home.
• Walk vacant lots. Confirm they're actually rentable — utility taps present, pad usable, no setback or zoning issues blocking placement.
• Check fence lines, signage, lighting, and any amenities the marketing materials mention.

4. Financial

Numbers on a setup sheet are a starting point, not a finishing one. The objective is to bridge from the seller's representation to a defensible underwritten NOI.

• Trailing-twelve-month income statement (T-12) broken out by month. Don't accept an annual summary. See how to read a T-12.
• Rent roll as of the most recent month, with lot status, current rent, lease type, and tenure per space.
• Two to three years of historical financials for trend analysis. Watch for one-time items dressed as recurring revenue, or expenses suppressed in the trailing year.
• Property tax bills for the prior three years. Reassessment on sale is common and can materially change Year-1 NOI.
• Insurance binder and claims history. Past claims signal risk; the current premium tells you what the line item really costs.
• Utility bills for the prior twelve months. Master-metered parks can carry significant utility cost relative to bill-back recovery — quantify the gap.
• Bank statements or deposit records to confirm collected income matches stated income. Discrepancies here are not rare.
• Capital expenditure history — what's been done, what's pending, what's been deferred.
• Reconcile the resident sub-metering and bill-back numbers rather than accepting them at face value.

5. Tenant Base and Operations

• Tenure mix. Long-tenured residents are stable; short tenure and high turnover suggest underlying problems.
• Delinquency reports. Current delinquencies, write-off history, eviction history.
• Demographic snapshot. Age, income mix, source of income. This matters for regulatory exposure and the resident base's ability to absorb rent increases.
• POH vs. TOH ratio confirmed against the rent roll, not just the seller's representation. (See park-owned vs. tenant-owned homes.)
• Management structure. On-site manager, off-site company, owner-operated? Continuity at takeover matters.
• Community standards. Walk the park for unenforced rules, junk vehicles, abandoned structures — items to address post-close.

6. Deferred Capex and Reserves

Build a capex schedule that reflects what the property actually needs over the hold:

• Road resurfacing or replacement, by phase
• Water main or sewer line replacement
• Lift station or treatment plant work
• Tree work and clearing
• Common-area improvements
• Per-home capex if POH (roofs, HVAC, appliances, flooring)
• Code compliance and ADA upgrades

As a rough screen, a deferred-capex line exceeding roughly 5% of purchase price is a meaningful repricing item, and amounts well beyond that often warrant renegotiation or a walk. The right threshold depends on the asset and the plan.

7. Closing-Period Items

In the final stretch before close, confirm:

• Estoppel certificates from residents (where applicable) and any commercial tenants.
• Service contracts — landscaping, trash, snow removal, pest control. What's assignable, what's not, and on what terms.
• Software and operational systems — property management software, sub-metering, payment processing, and transition plans.
• Employees — whether you're assuming, terminating, or relying on a management company. Notice periods and accrued obligations.
• Insurance binder and lender requirements finalized.
• Loan commitment in hand with all conditions satisfied.

8. Red Flags That Warrant a Hard Look

Some patterns reliably correlate with problem deals:

• Rent roll showing rents materially below market with no documented reason — often a sign of a regulatory or operational constraint the seller hasn't disclosed.
• Trailing financials with unusual patterns in the last 90 days before listing (one-time revenue, suppressed expenses, deferred maintenance accelerated into add-backs).
• Resistance or delay in producing utility bills, capex history, or environmental records.
• Recent ownership changes or short hold periods that suggest the seller is exiting ahead of an issue surfacing.
• Active litigation or regulatory complaints, even informal ones.

The Bottom Line

The point of due diligence is to convert unknowns into known prices. Every item on this list either confirms the deal you signed, reprices it, or kills it before you write a check you can't take back. Walk each section, document what you find, and make the seller answer to the gap between representation and reality. The deals that succeed tend to be the ones where what closes matches what was underwritten — and that match is built in diligence.

Related UWmatic Resources

• Free MHP rent-cap impact calculator — stress-test rent-control exposure after Section 1
• Mobile Home Park Underwriting Guide
• How MHP Exit Value Is Calculated — how deferred capex flows into the exit
• Park-Owned vs. Tenant-Owned Homes
• MHP Rent Control Underwriting: The 2026 Regulatory Wave
• LP Red-Flag Checklist for Passive Investors

This checklist reflects general market practice as of the publication date and may evolve as conditions change. It is a starting framework, not a substitute for a qualified property condition assessment, environmental study, or attorney review. Nothing here is investment, legal, or tax advice; conduct your own diligence and consult qualified professionals before closing.