Your First Mobile Home Park: Tax Setup Checklist for New Owners

Closing day on your first mobile home park is exciting. The keys change hands, the rent roll is yours, and the monthly lot rents start flowing. But for every new MHP owner who nails the acquisition, there are a handful who spend the next two years untangling a tax mess that started in the first 30 days because nobody handed them a setup checklist.

Entity not in place before close? Now you’ve got a personal acquisition that’s painful to restructure. No separate business bank account? Your CPA is spending billable hours trying to figure out which QuickBooks transactions are the park and which are your household. No cost segregation study? You’ve left real depreciation money on the table for the first year and it doesn’t compound forward.

The setup steps below are not complicated. They’re just easy to deprioritize when you’re busy with the operational side of onboarding a park. Do them anyway. In order. As quickly as possible around your closing date.

Before Closing: Non-Negotiables

1. Entity in Place Before Close

What: Form your operating entity — typically a single-member or multi-member LLC — and ensure it is the purchaser on the purchase and sale agreement. The entity should be formed and in good standing in your state before you sign the PSA.

Why it matters: Acquiring title in your personal name and then trying to transfer to an LLC afterward triggers due-on-sale clauses in most mortgage agreements (potentially requiring lender consent), creates a second transfer tax event in some states, and complicates your liability protection. The entity should be the buyer from the start.

When to do it: Before you make an offer or immediately upon going under contract. Do not let this slip until closing week.

2. EIN Obtained for the Operating Entity

What: Obtain an Employer Identification Number (EIN) for your LLC from the IRS. This is the entity’s tax identification number, equivalent to a Social Security Number for a person.

Why it matters: You need the EIN to open business bank accounts, set up payroll if you have employees, file the entity’s tax return, and provide to your lender. The IRS issues EINs for free via the online EIN application at IRS.gov — it takes 15 minutes.

When to do it: Immediately upon forming the entity, well before closing.

At or Immediately After Closing

3. Separate Business Bank Account

What: Open a dedicated business checking account in the name of your LLC, funded with operating capital. All park income goes in, all park expenses come out. No personal transactions in this account.

Why it matters: Co-mingling personal and business finances is the single most common bookkeeping problem in small MHP operations. It pierces the entity’s liability protection (courts can disregard the LLC if it’s not operated as a separate entity), creates a bookkeeping nightmare, and makes your CPA’s job — and your tax preparation bill — much more expensive. Open the account before your first lot rent deposits arrive.

When to do it: Before your first rental deposit hits. Ideally on or before closing day.

4. Bookkeeping System Set Up and Running

What: Establish your bookkeeping system — typically QuickBooks Online or Desktop for accounting, integrated with a property management platform like RentManager, Rent Manager, or Buildium for the rent roll. Set up your chart of accounts to match MHP-specific categories: lot rent, POH rent, utility income, maintenance, management fees, insurance, property taxes, utilities.

Why it matters: Year-end tax preparation is only possible if you’ve captured the year’s income and expenses correctly as they happened. Reconstructing a year of transactions from bank statements is expensive, error-prone, and stressful. Start clean from day one.

When to do it: Before your first rent cycle. Your CPA should review your initial chart of accounts setup to ensure categories align with how they’ll need the data at tax time.

5. Cost Segregation Study Commissioned

What: Engage a qualified cost segregation engineer to analyze your acquisition and reclassify assets from 27.5-year or 39-year real property to 5-year personal property (POHs, equipment) and 15-year land improvements (roads, utility infrastructure, site improvements). The study should be completed before you file your first tax return for the park.

Why it matters: Cost segregation accelerates your depreciation deductions significantly, particularly in the early years of ownership when 100% bonus depreciation (or the phased-in bonus percentage applicable for your acquisition year) may apply to 5-year and 15-year property. Without a cost segregation study, you’re depreciating everything as 39-year commercial property — leaving substantial first-year deductions unclaimed. Those missed deductions don’t carry forward automatically.

When to do it: As soon as possible after closing, and well before your first tax return due date. Cost segregation studies typically take 4-8 weeks.

6. Depreciation Schedule Initiated with Correct Asset Classification

What: Based on your cost segregation study (and your purchase price allocation from Form 8594), establish your initial depreciation schedule in your tax software. Every asset class should be on the correct recovery period: 5-year (POHs, equipment), 15-year (land improvements), 27.5-year or 39-year (buildings), and land (not depreciable).

Why it matters: The depreciation schedule established in your first year of ownership is the baseline for all future years. Errors made at setup compound — a POH incorrectly classified at 27.5 years will continue to be under-depreciated until the error is found and corrected, and a late correction may require an accounting method change (Form 3115) with the IRS. Get it right from year one.

When to do it: During or immediately after completion of the cost segregation study, before your first federal return is filed.

Within the First Quarter of Ownership

7. Estimated Tax Payments Set Up

What: If you’re not having taxes withheld from wages (or your wages aren’t sufficient to cover the additional tax from park income), set up quarterly estimated tax payments using IRS Form 1040-ES. Estimated payments are due in April, June, September, and January.

Why it matters: The IRS requires you to pay taxes as you earn income, not just at year end. Underpaying estimated taxes triggers an underpayment penalty under IRC §6654. For first-year MHP owners who also have W-2 income, the park can significantly increase overall taxable income, and the underpayment penalty is an avoidable cost. Your CPA should model your estimated payment requirements after the first quarter of ownership.

When to do it: Before the first quarterly deadline after your acquisition. If your park was acquired in January, your first estimated payment may be due in April.

8. CPA Engaged for Year-Round Relationship

What: Engage an MHP-experienced CPA or Enrolled Agent on a year-round basis — not just a tax preparer who files your return in March. An ongoing relationship means quarterly check-ins on estimated taxes, strategic planning around depreciation elections, review of major transactions before they happen, and tax projections before year-end.

Why it matters: Most expensive tax mistakes in MHP ownership happen because the owner didn’t have a tax professional involved in decisions until after they’d already been made. Bonus depreciation elections, cost segregation timing, entity restructuring, and exit strategy decisions all have major tax implications that are much easier to optimize before the transaction than after.

When to do it: Before closing, ideally. At a minimum, within the first month of ownership.

9. Rent Roll Reconciliation Process Established

What: Set up a monthly process to reconcile your property management system’s rent roll to your bank deposits and QuickBooks income entries. Every lot’s monthly rent should be trackable from lease to property management ledger to bank deposit to QuickBooks income line.

Why it matters: Rent roll integrity is the foundation of your NOI and your tax return. Errors in rent roll tracking — unrecorded vacancies, misapplied payments, undocumented tenant agreements — create financial records that don’t reflect reality. When you sell the park, buyers will reconcile your rent roll against bank statements and QuickBooks. Discrepancies erode their confidence in your NOI and reduce your price. Build the reconciliation habit from month one.

When to do it: First month of operation. This should be a standard closing item on your monthly property management workflow.

Your First-Year Tax Filing Setup

For multi-member LLCs and partnerships, the park entity files a partnership return (Form 1065) and issues Schedule K-1s to each owner. For single-member LLCs treated as disregarded entities, park income flows directly to your Schedule E on your personal return. Your entity election determines which applies.

Your first-year return will include Form 4562 (depreciation), Form 8594 (purchase price allocation, filed with the year of acquisition), and potentially Form 3115 if you’re making any accounting method changes. These forms require information that was established during your setup steps — another reason the setup work is essential, not optional.

For background on the metrics that matter as you operate the park year over year, see our posts on cap rate vs cash-on-cash return and how to calculate NOI correctly.

FAQ

For the IRS EIN application and related entity setup guidance, see IRS: Apply for an EIN Online.

Internal links: Cap Rate vs Cash-on-Cash Return | What Is NOI and How to Calculate It | Clean Up Your Books Before Listing

Disclaimer: This post is for educational and informational purposes only and does not constitute tax, legal, or financial advice. Tax laws change and individual circumstances vary. Consult a qualified tax professional and attorney before closing on any real estate investment and before making entity formation, depreciation election, or bookkeeping decisions. The MHP Accountant® is an enrolled agent firm; engagement of professional services is required for personalized advice.