MHP Accounting: What Makes It Different From Regular Real Estate Accounting

You own a mobile home park. You call a CPA who says they specialize in real estate investors, and they probably do — apartment buildings, single-family rentals, commercial strip centers. They have done hundreds of real estate returns. They know the rules.

Except the rules that matter most for your park are not the rules they know. MHP accounting is not a variant of real estate accounting. It is a distinct discipline with asset classifications, income structure, and operational tracking requirements that simply do not exist in any other property type. And the gaps in a generalist’s knowledge cost park owners real money, year after year.

This post covers the specific ways MHP accounting diverges from standard real estate accounting — not as theory, but as practical differences that show up in the return, in the books, and in your tax liability.

Multiple Asset Classes Under One Roof

In standard real estate accounting, a rental property is typically one asset class — residential real property at 27.5 years, or commercial real property at 39 years. The depreciation is straightforward.

An MHP is never one asset class. A single acquisition contains land (not depreciable), park-owned homes classified as 5-year personal property under MACRS Asset Class 00.12, land improvements classified as 15-year property (roads, utility lines, fencing, paving, drainage), residential structures at 27.5 years, and commercial structures at 39 years.

Each class has its own recovery period, depreciation method, applicable convention, and bonus depreciation eligibility. Managing all of them correctly — in the same entity, on the same tax return — requires knowledge of each class and the discipline to maintain them separately. A real estate CPA who handles single-asset-class properties is not trained for this multi-class complexity, and their default approach is to simplify it into a single real property class — which produces the wrong result.

The POH/TOH Income Split

In a standard multifamily property, all income is rent. There is one income category, one set of residents, and one revenue stream to track.

In an MHP with park-owned homes (POHs) and tenant-owned home lots (TOH lots), there are two fundamentally different revenue and expense profiles operating in the same park. POH income includes both lot rent and home rent. It also carries a corresponding set of expenses — POH maintenance, repairs, insurance on the homes — that do not apply to TOH lots. TOH income is lot rent only, with minimal corresponding home-level expense.

Mixing these income streams together — which is what happens when POH rental income and lot rent income are not separately tracked — produces a blended NOI that cannot be correctly analyzed from either a tax perspective or an operational perspective. The IRS needs the income correctly categorized. Lenders need it split for underwriting. Buyers in a future sale need it split for their own NOI analysis. Blended reporting serves none of these purposes correctly.

Utility Pass-Through Treatment

MHPs often bill residents for utilities — either through individual submeters, RUBS allocation, or flat-rate utility charges embedded in the lot rent. The accounting for utility income and expense in an MHP has specific rules that differ from how utilities are handled in multifamily accounting.

If the park pays the utility provider and bills residents through RUBS, both the utility expense and the RUBS recovery must flow through the income statement. They cannot be netted. The gross utility expense appears as an expense. The RUBS recovery appears as income. The net is the park’s actual utility cost — but the gross figures must appear separately for the financials to be correct.

A CPA who nets utility income against utility expense — either by habit from other property types or by lack of familiarity with RUBS structures — produces a financial statement that understates both gross revenue and gross expense. This makes the NOI margin look different than it actually is and creates problems in refinancing and sale due diligence when lenders and buyers reconstruct the gross figures.

POH Maintenance Tracking vs. Site Maintenance

In an apartment building, maintenance is maintenance. There is one property, one set of systems, one category for expenses.

In an MHP, maintenance must be tracked at two distinct levels: site maintenance (roads, utilities, common areas, park infrastructure) and POH maintenance (repairs to the homes you own). These are categorically different expenses with different tax treatment implications.

POH maintenance that replaces a component of an existing home may need to be capitalized under the IRS tangible property regulations rather than expensed immediately. Site maintenance that maintains the utility systems may be a deductible repair in one instance and a capital improvement requiring depreciation in another. Getting these distinctions right requires tracking the expenses separately by source — not lumping all maintenance together as one category.

A general real estate CPA who manages apartment buildings is typically not thinking at this level of granularity for individual home maintenance. Their systems are not built for it. The result is a maintenance category that mixes expensable repairs, capitalizable improvements, and site-level costs without the separation that MHP tax compliance requires.

The Lot-Level Tracking Requirement

Standard real estate accounting tracks income and expense at the property level. For a 50-unit apartment building, you track total rent collected, total vacancies, total expenses — and that is sufficient for both the tax return and lender reporting.

For an MHP, lot-level tracking is not optional — it is required for correct financial management. Each lot is an independent revenue unit with its own lease terms, rent rate, resident account, and occupancy status. A rent roll that does not track at the lot level cannot produce the income verification that lenders require in refinancing, that buyers require in acquisition due diligence, or that a CPA requires to correctly reconcile income on the tax return.

The lot-level tracking requirement also affects how capital improvements are handled. A capital improvement to Lot 14 — replacing the water service connection — should be tracked at the lot level so that the depreciation schedule correctly attributes the basis to that specific improvement. Aggregate capital expense tracking without lot-level attribution produces a depreciation schedule that cannot be correctly supported at the asset level.

Passive Activity Analysis Specific to MHPs

Passive activity rules apply to real estate investors broadly, but the analysis is more complex for MHP owners than for single-asset-class landlords. The reason is the multiple income streams with different character: lot rent income, POH rental income, utility income, and interest income (if the park holds notes from resident installment purchases) can all have different passive activity profiles.

For park owners who are also real estate professionals under Section 469, the ability to use passive losses against other income requires meeting an hours test that must be documented with time records. For park owners who do not qualify as real estate professionals, passive losses from large depreciation deductions may accumulate as carryforwards rather than offsetting current-year active income.

A general real estate CPA may apply passive activity rules at the property level without accounting for the character differences between income streams in an MHP. An MHP-specialized CPA understands how to structure and document the passive activity analysis at the correct level of detail — including how to handle the real estate professional election if relevant to the owner’s situation.

Multi-State Complexity for Portfolio Owners

Many MHP investors accumulate portfolios across multiple states. Each state where you own a park creates a filing obligation — a state income tax return, potentially a franchise or excise tax, and in some states, local tax requirements on top of the state requirement.

Multi-state MHP accounting requires tracking income and expenses at the entity level for each state, applying the correct state apportionment rules for any entity with multi-state operations, and managing the state filing calendar across potentially many jurisdictions. A CPA who primarily practices in one state and handles local real estate investors is not well positioned to manage this complexity efficiently.

The multi-state picture also affects entity structuring. Whether to hold each park in a state-specific LLC versus a centralized holding structure involves both legal and tax considerations that require coordinated analysis from a CPA who understands both the federal tax consequences and the state-by-state filing implications. See how this connects to MHP strategic tax planning and what a year-round advisory relationship looks like for portfolio owners.

Why Most Real Estate CPAs Still Get It Wrong

The problem is not competence — most real estate CPAs are technically skilled in the areas they work regularly. The problem is specialization depth. A CPA who handles 200 real estate clients a year, all multifamily or commercial, has zero exposure to the specific rules that govern MHP taxation. When an MHP owner comes to them, they apply what they know — and what they know produces the wrong result for the specific asset class they are looking at.

The errors are consistent: POHs classified at 27.5 years because the CPA defaults to the residential real property class. Land improvements lumped into the land basis or the building basis. RUBS income netted against utility expense rather than grossed up. POH and TOH income reported as a single figure rather than split. No cost segregation analysis because the CPA does not have a relationship with cost segregation engineers who understand manufactured housing. No lookback study because the CPA does not know to look for prior-year misclassifications.

Each error individually might be small. Compounded across a multi-park portfolio over multiple years, the aggregate impact is not small. This is why the distinction between a generalist real estate CPA and an MHP-specialized CPA is worth understanding before you commit to an accounting relationship. For more on what correct MHP financial reporting looks like month-to-month, see our guide to MHP financial reporting. For the acquisition side of MHP accounting complexity, see our MHP acquisition due diligence overview.

Frequently Asked Questions

For IRS guidance on passive activity rules and real property rental income, see IRS Publication 925: Passive Activity and At-Risk Rules.

This content is for educational purposes only and does not constitute tax or legal advice. The MHP Accountant recommends consulting a qualified CPA for advice specific to your situation.