How to Buy a Small Apartment Building in Houston

Why small buildings, and why Houston's east and northeast

A small apartment building, five to twenty units, is the step most Houston investors take after a few rental houses. One roof, one tax bill, one insurance policy, and a dozen rent checks. The reason the numbers work here and not in most big cities is replacement cost. Building a new apartment building in Houston runs roughly two hundred thousand dollars a door once land, site work, and financing are in. Existing small buildings in the East End, the northeast, and the south side ask sixty to ninety thousand a door. You are buying cash flow at a third of what it would cost to create it, and the trade is the condition of the building and the quality of the rent roll.

The zip codes where this works are specific: the East End (77011, 77023, 77020), Northeast Houston (77029, 77028, 77016), the south side near the Medical Center (77051, 77033, 77021), Acres Homes, Fifth Ward, Third Ward, and Independence Heights. Rents in those areas rose seven to nine percent over the last year on closed leases, while inner Loop prices per square foot fell, which is the combination a buyer of existing buildings wants.

What the market looks like right now

InSync publishes a weekly snapshot of every active small multifamily listing across seventeen Houston investor zip codes on the Houston multifamily market data page. In late August 2026 it showed about fifty five buildings of five or more units for sale under three million dollars, a median asking price under ninety thousand dollars per door, and a median stated cap rate above eight percent where a cap rate was published at all. The 2 to 4 unit side is much deeper, more than four hundred listings, and most of the newer inventory lives there: duplex and fourplex packages from small builders, financed like houses.

Two facts shape strategy. First, buildings of five or more units built after 2010 and priced under two million dollars are almost nonexistent; if you want new product, you are buying 2 to 4 unit. Second, the stated cap rates on the older buildings are high because deferred maintenance and vacancy are priced in. A twelve percent cap on a 1950s eight unit building and a six percent estimated cap on a 2024 duplex describe different risks, not a bargain and a rip off.

Reading a cap rate, stated or estimated

A cap rate is net operating income divided by price. Net operating income is rent collected, less vacancy, less every operating expense (taxes at the post sale assessment, insurance, utilities the owner pays, repairs, management, turnover), before the loan payment. Most small MLS listings in Houston publish no cap rate at all, and the ones that do often quote pro forma numbers built on rents the building does not collect today.

When a listing states nothing, we estimate: units, times the zip code's median closed apartment lease, times twelve, less an eight percent vacancy allowance and a forty five percent expense allowance, divided by the asking price. That number ranks the list. It never writes the offer. Before you offer you replace it with the seller's actual rent roll, twelve months of bank deposits, and the real tax and insurance bills. If the seller will not produce those, the cap rate is fiction and the price should reflect it.

Financing from 5 units up

The fifth unit changes the financing. One to four units qualify for residential and DSCR loans, where the rent covers the payment and your tax returns stay in the drawer. Five or more units is commercial: agency small balance programs, bank portfolio loans, and private lenders, typically sixty five to eighty percent loan to value, sized on the building's debt service coverage, with a closer look at your experience and liquidity. Several DSCR programs now extend to five to eight unit buildings with residential style qualification, which is the fastest path for a first building.

Bridge loans exist for buildings that do not cash flow yet: vacant, under rented, or needing work. They are more expensive and short, and they only make sense with a clear exit into a permanent loan or a sale. The commercial mortgage broker page lays out each program and what drives approval, and the DSCR calculator runs the coverage math on a single property.

What to underwrite before you offer

Five documents, every time: the current rent roll with lease dates and deposits, twelve months of income and expenses (a trailing twelve, backed by bank statements), the tax bill and what it becomes after the sale reassesses the value, a real insurance quote on the building as it sits, and a walk of every unit. In Houston the walk matters more than anywhere: foundations on clay soil, roofs that have been patched through three hail seasons, galvanized plumbing, and electrical panels that insurers will not cover.

Budget ten to fifteen thousand dollars per unit for capital work on anything built before 1980 unless the seller can show it was done, and price that into your offer, not your hopes. Check the flood zone and the elevation, the deed restrictions, and whether the building sits in a TIRZ or special district. A broker price opinion on the building before the offer is cheap insurance against the appraisal later.

The offer, the contract, and the calendar

Small commercial deals in Houston fail on the calendar more than on price. The inspection period ends before the appraisal is back; the financing contingency expires while the lender is still reading the rent roll. Write the contract around the real loan timeline: cash deals close in two to three weeks once title is clear, financed purchases on five or more units usually need thirty to forty five days, and bridge and DSCR loans can close in two to four weeks.

Negotiate the rent roll and estoppels as deliverables with dates, a survey, and the seller's cooperation with the appraiser. If the building has code violations or open permits, resolve who cures them before closing. Title goes to a Texas company that closes commercial property weekly, and the earnest money sits with the title company, never with the seller.

The first 90 days of ownership

Day one: notify tenants in writing, collect deposits from the seller at closing, and put the building on a maintenance calendar. Month one: every unit inspected, leases brought to market on renewal rather than all at once, and a capital plan that handles life safety first. By day ninety you should know the building's real expense ratio, which is the number that decides whether your cap rate was right.

Management is the decision that makes or breaks a first building. A third party manager for a twelve unit property is worth the fee if you are not local or not handy; self management is worth the savings if you are both. Either way, run the building on its own bank account from the first day, because the next lender will want twelve clean months of statements.

How InSync runs the search and the loan together

InSync Homes and Loans brokers the purchase and places the commercial loan from one desk, which is why our contracts are written to the lender's calendar. Every week we screen every active small multifamily listing on the Houston MLS and the commercial marketplaces against a buyer's unit count, price ceiling, zip codes, and cap rate floor, estimate the cap rate where the listing publishes none, and send one short email with the new matches. The commercial real estate broker page explains the weekly deal flow and how to turn it on; the multifamily loans page covers five to twenty five unit programs in more depth.

If you are moving from houses to a building this year, start with the market data, pick your zip codes and your cap rate floor, and let the screen do the watching. The right building shows up on a Tuesday, and the buyer who already knows the rents wins it.

Related InSync resources

• Commercial real estate broker in Houston
• Commercial mortgage broker in Houston
• Houston multifamily market data
• Multifamily loans in Houston
• DSCR calculator
• Broker price opinions