Most rent-versus-buy content is written by people who get paid when you buy. So let me put the conclusion first: in Boston in 2026, there are real situations where renting is the better financial decision, and I will name them.

Here is the actual math.

What the two sides cost right now

Renting. Average apartment rents earlier this year ran roughly $3,943 a month in the South End and $4,249 in South Boston. Different neighborhoods vary substantially, but the inner-city figure for a decent unit sits in the high threes to low fours.

Buying. The Greater Boston year-to-date median condo price is $625,000 and the median single-family is $810,000. The 30-year fixed averaged 6.69 percent for the week ending August 6 — up from 6.66 percent the prior week and above 6.63 percent a year earlier. Fannie Mae and the Mortgage Bankers Association place near-term forecasts around 6.4 percent.

Note what that rate history means: the affordability improvement people have been waiting for has not arrived, and the forecasts describe a market holding roughly where it is.

The five costs renters forget

Buyers compare a mortgage payment to rent. That comparison is wrong in both directions, and here are the pieces that go missing.

Property tax, net of exemption. In Boston, the FY2026 residential exemption removed up to $351,108 of assessed value, saving qualifying owner-occupants up to $4,353.74 — about $363 a month. That is real and it belongs in the buy column. But only a minority of Massachusetts communities have adopted a residential exemption at all. Boston, Cambridge, Somerville, Brookline, Watertown, Waltham, and Everett have one; most MetroWest towns, Newton included, do not.

Condo fees. Rising faster than almost any other line, driven by insurance renewals on older masonry buildings and deferred capital coming due. And it compounds against you twice: monthly, and at resale, because at 6.69 percent every $200 a month of fee reduces a future buyer's purchasing power by roughly $31,000.

Maintenance, if it is a house. Plan on 1 to 2 percent of value annually, averaged. On an $810,000 house that is real money, and it does not arrive smoothly — it arrives as a $14,000 roof in a year you did not want one.

Transaction costs. Buying and selling is not free. The Massachusetts deeds excise alone runs $4.56 per $1,000 in most counties, and the full cost of selling a $600,000 Massachusetts home runs roughly 8.9 percent when everything is counted. That cost is amortized over your holding period, which is exactly why holding period is the whole question.

Opportunity cost of the down payment. Money in a down payment is money not invested elsewhere. Honest math counts that.

The real question is not rent versus buy. It is how long.

Transaction costs are the hinge. Roughly nine percent to sell, plus buying costs, has to be earned back before ownership beats renting.

Under three years: renting almost always wins in this market. You will not recover transaction costs, and you are exposed to a market that could be flat or down when you need to sell.

Three to seven years: it depends entirely on the specifics — the property type, the fee, the exemption, the neighborhood.

Over seven years: buying usually wins, and the longer you hold, the more decisively.

If you cannot say with reasonable confidence that you will be in the same metro in five years, that is not a market-timing question. That is your answer.

Four situations where renting is genuinely the better call

1. Your job is portable and your field is not concentrated here. Boston's premium buys career depth in medicine, research, biotech, education, and finance. If your work does not draw on that, you are paying the premium without receiving the benefit.

2. You are under three years of certainty. See above.

3. Your down payment would leave you with no reserves. Buying a Boston condo with nothing behind it is how a $12,000 special assessment becomes a crisis. Old buildings produce surprises.

4. The only thing in your budget is a product you do not want. A high-fee studio in a building with an underfunded reserve is not a starter home. It is a hard-to-sell asset with a monthly cost that rises faster than your income.

Four situations where buying wins clearly

1. You are staying, and you know it. Seven-plus years changes every number.

2. You qualify for assistance and are shopping under the cap. The state and city programs have a purchase price ceiling reported at $675,000, and they still reach real inventory in parts of Dorchester, Hyde Park, Mattapan, and just outside the city in Everett, Revere, Chelsea, Malden, and Quincy. Stack the assistance with the residential exemption and the math changes materially.

3. You would owner-occupy a multifamily. Live in one unit, rent the others, collect the residential exemption on the building that an absentee owner does not get. This is the strongest version of buying in this market.

4. You want stability more than optionality. Renting in Boston means competing on a September 1 cycle where two thirds of the city's leases turn over on one day. That is a real cost that never appears in a spreadsheet.

How to actually run it

Build a total monthly cost for both sides. For buying: mortgage at today's rate on your real down payment, property tax net of any exemption you would qualify for, a real insurance quote, condo fee or 1.5 percent of value divided by twelve for a house, and transportation including any car you would need. For renting: rent, renters insurance, and the same transportation line.

Then divide your estimated transaction costs by the number of months you expect to stay and add that to the buy column. That single step is what most calculators leave out, and it is usually what decides it.

Send me your rent, your savings, your income range, and how long you expect to be here. I will run both sides honestly and tell you which one wins for your specific situation. If the answer is that you should rent for another two years and save, I will tell you that — I would rather work with you later than sell you something now.

Chris Remmes, Managing Broker, Remmes & Co. [email protected] | 617-398-0015