Every affordability calculator asks what house you want and tells you the payment. This one runs the other way. Tell it what you can spend each month and it works backwards through all 208 towns in both states — every tax rate, every assessment ratio, the heat, the roof reserve, the insurance — and tells you which ones you can actually reach.
Why this runs backwards
A normal calculator takes a price and gives you a payment. That is the wrong direction for almost everyone we meet. Buyers do not start with a house. They start with a number they can live with every month, and then spend six weekends discovering which towns that number actually reaches.
So this tool takes the monthly number and solves for the price — separately in every one of the 208 towns and cities across Connecticut and Rhode Island, using each one’s own tax rate and assessment ratio. There is no formula that inverts cleanly, because the tax, the insurance, the maintenance reserve and the mortgage insurance all move with the price you are solving for. The tool searches instead: it guesses a price, prices the whole stack, and narrows until the monthly figure lands on your budget. It does that forty times per town, which takes no time at all and has the useful property of agreeing exactly with our True Cost calculators, because it is calling the same arithmetic.
The tax rate is rarely the thing standing in your way
Run any budget through this and a pattern shows up immediately. The towns where your money stretches furthest are the low-tax towns — Washington, Salisbury, Sharon, Roxbury in Connecticut; Little Compton, Jamestown, Charlestown in Rhode Island. And almost none of them are towns you can actually buy in, because their median sale prices are two to four times the state average.
Meanwhile Hartford, with the highest mill rate in Connecticut by a distance, has a median price low enough that a modest budget clears it comfortably. The tax load is real and it is worth thousands a year, but on the question of where can I buy, price level beats tax rate nearly every time. That is why this tool shows both columns side by side instead of ranking towns by what your money buys. What your money buys is only interesting next to what houses there cost.
Comparing the two states without getting it wrong
Connecticut assesses at 70% of market value. Rhode Island assesses at about 100%. A Rhode Island rate of $12 per $1,000 and a Connecticut rate of 12 mills are not the same tax — the Rhode Island one is roughly 40% heavier on an identical house. This is the single most common mistake buyers make on this border, and it is why the two states can sit in one table here: the tool never compares rates, it compares tax bills.
Which matters most right here. Mystic, Stonington, Westerly and Pawcatuck are one housing market with a state line running through it. Anyone shopping that stretch is choosing between two tax systems without usually realising it, and the comparison is worth a few hundred dollars a month.
What this tool assumes, stated plainly
It prices a house of that town’s median size. Heat, insurance and the maintenance reserve all key off square footage, and the only square footage we have per town is the median. So when the tool says a budget reaches $410,000 in Ledyard, it means $410,000 of a house about the size of a typical Ledyard house. Buy something much larger for the same money and the running costs go up.
Medians are a trailing 12 months. Their effective midpoint sits about six months back, so in a moving market they read slightly behind. And in the smallest towns a median can rest on a handful of sales, which makes it a weak number to chase. Union, Scotland, Eastford, Little Compton and Block Island all move a lot on very little volume — treat a shortlist entry there as a prompt to ask, not a finding.
No fire or special district taxes are included in the headline figure. They are real, and there are far more of them than most buyers expect: 92 of Connecticut’s 169 towns levy them, 352 districts in all, and they charge on top of the town rate. Stonington alone has eleven, Groton ten, Old Saybrook eight. The median district adds 1.94 mills, which moves what you can afford by two or three percent — but Torrington’s Lakeridge district adds 61.32, and inside it the same budget buys nearly thirty percent less house. Every town’s districts and their rates are listed when you open it in the table above, along with what the heaviest one does to your number. Rhode Island fire districts bill separately from the town and are not in the state’s published file, so RI towns carry a general flag rather than a list.
Your purchase price is not your assessment. The town assessed that parcel at its last revaluation and will not reassess because you bought it. This tool uses price as a stand-in for assessed value, which is the honest general approximation and the wrong number for any specific house. The revaluation year for each town is in the detail panel.
Information deemed reliable but not guaranteed. Every figure produced by this tool is an estimate built from public data and general assumptions. It is not an appraisal, a loan estimate, a pre-approval, an insurance quote, or a tax determination, and no part of it creates a professional relationship or a representation of fact. It does not tell you what a lender will approve; lenders qualify on debt-to-income ratios and credit, not on the cost stack shown here. Seaport Real Estate Services and Seaport Advisory make no warranty, express or implied, as to the accuracy or completeness of anything shown here, and accept no liability for any decision made in reliance on it. Verify property tax with the town assessor, financing with your lender, insurance with a licensed agent, and tax treatment with a CPA or attorney before you act on any number. Connecticut mill rates are OPM FY 2025–2026 except where a row states a confirmed FY 2026–27 rate; assessment at 70% of market value except where noted. Rhode Island rates are RI Division of Municipal Finance FY 2026 residential rates on the 2025 tax roll, applied at approximately 100% of assessed value. Neither state’s figures include fire or special district levies. Median selling prices and median home sizes are trailing-365-day Seaport Market Pulse data and in low-volume towns rest on few sales. Homes over $1M in Rhode Island that are not owner-occupied may owe the state Non-Owner Occupied Property Tax; its effective date and administration were still being finalised. Not tax, legal, or insurance advice.