How to manage one to four rental units yourself, without overbuilding

What changes at one to four units

At this size, most weeks have nothing to do and a few have three things at once. A tenant moves out, a water heater fails and the property tax bill arrives. The software and habits that help are the ones that make the busy week easy, not the ones with the most features.

Many owners at this size also keep a day job. Whatever you set up must work in ten minutes on a phone, or it will not get used.

The five things to set up

1. A separate bank account for rent. Even for one unit. Rent in, rental expenses out, nothing personal. This single habit makes the tax return easy and protects you if you ever form an LLC.
2. A written lease and a rent routine. A real lease for each tenant, a due date, a way to pay that leaves a record, and a note of the late fee rules in your state.
3. A repair log. A list of requests with the date, the unit, what was done, who did it and what it cost. A shared note works; software is better.
4. Books that follow Schedule E. Record each transaction under the Schedule E line it belongs to. See the Instructions for Schedule E for the lines.
5. A date calendar. Lease end dates, renewal notices, insurance renewal, property tax dates, estimated tax payments and filter changes.

Self-manage or hire a manager at this size

Managers commonly charge a percentage of monthly rent, plus fees for leasing and sometimes for renewals and repairs, so the price depends entirely on your contract. Read it for every fee, not just the headline percentage.

Example a made-up owner has 3 units renting for $1,400 each, so $4,200 a month. If a manager charged 8% of collected rent, that is 0.08 x $4,200 = $336 a month, or $4,032 a year, before any leasing or renewal fees. Doing it yourself costs your time plus any software.

The honest comparison is time. If you can spend a few hours a month and answer a tenant within a day, self-managing is realistic at this size. If you live far away, travel often or dislike tenant calls, a manager may be worth the cost. Neither answer is wrong.

Records that matter most at tax time

• Rent received for each unit, by month.
• Receipts for every repair and expense, with the unit noted.
• The settlement statement from the purchase and the date the unit was ready to rent, for depreciation.
• Mortgage interest statement (Form 1098) and the property tax bill.
• Mileage to the property, if you claim it.
• Payments to contractors, with their tax form on file. Ask your tax preparer which payments must be reported.

The IRS publishes guidance on rental income and expenses in Publication 527. Keeping records as you go turns the return into a short job.

Set up for five units, not just three

The cheapest time to build good habits is before you need them. Use a chart of accounts that works for ten properties even if you own two. Put each property in its own folder. Name bank transactions the same way. When you buy the fifth unit, nothing has to be rebuilt.

How DoorKeeping handles it

DoorKeeping costs $2 per unit a month, with every feature included, no setup and no minimum, so a four unit owner pays $8 a month. The lease, rent tracking, repair log, books and Schedule E report are the same ones that work for a portfolio of any size.

You run it by asking Claude or ChatGPT in plain words: "who has paid this month", "log a repair at unit 2", "what do I owe in estimated tax". Rent and payments stay in your own bank accounts. DoorKeeping never holds your money and sends a payment only when you approve it. Tenants pay $0 by bank transfer or Zelle.

DoorKeeping gives no legal or tax advice. Check your state's rules and ask your tax preparer.

Sources

1. IRS Publication 527, Residential Rental Property, read Oct 30, 2026
2. IRS Instructions for Schedule E (Form 1040), read Oct 30, 2026

Questions

Do I need property management software for 2 rental units?

Not strictly, but you need a system. A spreadsheet works until it does not. Software helps most with rent tracking, the repair log and tax-time reports.

Do I need an LLC for one rental property?

It depends on your state, your insurance and your risk. Ask a local attorney and your insurance agent. Either way, keep a separate bank account for the rental.

How much does DoorKeeping cost for 4 units?

$8 a month: $2 per unit, with every feature included.

How much time does self-managing a few rentals take?

It varies a lot. Quiet months can need an hour; a move-out or a major repair can take a week of evenings. Plan for the busy weeks.