How Much Income Do You Need to Buy a Condo in South Boston?

If you’re looking at South Boston condos, the listing price alone won’t tell you whether the monthly payment works. Your down payment, mortgage rate, property taxes, condo fee, insurance, and other debts all affect the answer.

For a rough starting point, a buyer putting 20% down might need about $141,000 in annual household income for a $600,000 condo, or about $187,000 for an $800,000 condo. Those estimates assume housing costs use 36% of gross income. A more cautious 30% target raises the figures to about $169,000 and $225,000, respectively. They are planning examples, not lender approvals.

What would the monthly payment look like?

The examples below use a 20% down payment, a 30-year mortgage at 7.03%, and Boston’s fiscal year 2026 residential tax rate of $12.40 per $1,000 of assessed value. The 7.03% rate was Freddie Mac’s national average on September 24, 2026; an individual buyer’s quote may differ. For illustration, the tax calculation assumes the assessed value equals the purchase price, which may not be true for a particular condo. freddiemac.com

Totals include estimated property tax, plus illustrative condo fees of $300, $400, and $500 per month and condo insurance of $100, $125, and $150 per month, respectively. They exclude utilities, parking costs, repairs inside the unit, and any special assessment. Figures are rounded and do not assume a residential tax exemption.

This range is useful because “Can I qualify?” and “Will I feel comfortable with the payment?” are different questions. A lender will review your full financial picture. You should also decide how much room you want for savings, travel, childcare, and the unexpected.

Why can two similarly priced South Boston condos cost different amounts each month?

Start with the condo fee. A smaller association on a residential side street may have different expenses and reserves from a building with an elevator, garage, or extensive shared amenities. Compare what each fee covers before deciding that the lower fee is the better deal.

Then look beyond the current fee. Ask for the association’s budget, reserve information, meeting minutes, and details of planned work. A low monthly fee offers little comfort if the building has a major project ahead and limited savings to pay for it.

Property taxes deserve a property-specific check, too. Boston bases its tax bill on assessed value. Qualified owners who use a property as their principal residence may be eligible for a residential exemption, but buyers should confirm their own eligibility and timing with the City rather than subtracting it from an initial budget automatically. boston.gov

These details matter across South Boston, whether you’re comparing an East Side condo with a private yard, a West Broadway duplex with outdoor space, or a unit with garage parking. The asking prices might be close while the ongoing costs differ substantially.

How do your down payment and other debts change the answer?

Putting 20% down reduces the loan amount, but it also ties up a large amount of cash. In the examples above, the down payment alone ranges from $120,000 to $200,000. You would still need to plan for closing costs, moving expenses, and cash reserves.

A smaller down payment may get you into a home sooner, but it generally means a larger mortgage payment and could add mortgage insurance. Ask a lender to show you several down payment options using the same condo, so you can compare both the monthly cost and the cash required at closing.

Student loans, car payments, and other recurring debts also affect borrowing capacity. Two households with the same income and down payment may receive different loan terms or qualify for different amounts. That’s why an online affordability calculator is a starting point, not a purchasing plan.

What is a realistic budget before you start touring?

Set a monthly ceiling first. Include mortgage principal and interest, taxes, condo fees, insurance, and a cushion for costs the association doesn’t cover. Then work backward to a price range with your lender.

For each condo that interests you, replace the estimates with its actual fee, assessed value, available association documents, and an insurance quote. Have your lender update the payment using a current rate and the financing terms available to you. Rates can move, and so can your payment estimate until your loan terms are locked.

Finally, keep some flexibility in the search. A condo with a higher asking price and sound association finances may fit your plans better than a cheaper one with significant upcoming work. The right comparison is the full cost of ownership alongside the home itself.

There’s no single salary required to buy a South Boston condo. At the assumptions used here, an $800,000 purchase produces an estimated $5,623 monthly housing cost and suggests roughly $187,000 to $225,000 in annual household income, depending on the share of gross income you’re comfortable spending. Your actual budget depends on the condo, your financing, and your other obligations.

If you’re weighing South Boston condos, contact Darcy Bento at Bento Real Estate. Darcy can help you compare properties, condo documents, and ownership costs so you can search within a budget that makes sense for you.