# Somerville Property Tax in 2026: What the Residential Exemption Could Mean for Your Bill
Key Takeaways
•Move in yourself and the city cuts your bill first. Somerville subtracts a residential exemption — a fixed dollar amount the city takes off your taxable value if you live in the home — before applying the tax rate. Confirm eligibility with the City Assessing Department.
•The figures our examples rely on: a residential rate of $10.98 per $1,000 of assessed value and a residential exemption worth about $4,578 off an owner-occupant's yearly bill. These come from a market data table, not an official rate notice. Confirm both with the City of Somerville Assessing Department before you budget.
•The bottom line: on our illustrative $1,085,000 assessed value, a landlord pays the full $11,913 gross tax, while an owner-occupant subtracts the $4,578 exemption to land around $7,335 — roughly $4,578 less per year.
•Occupancy, not sale price, decides your bill. Sale price times the rate is only the starting line.
Most people assume a Somerville property tax bill is simple: take the sale price, multiply by the tax rate, done. That is not how your real bill works.
In Somerville, where you sleep matters. If the home is your primary residence, the City Assessing Department applies a residential exemption. If you rent it out, you do not get that break. On our example property, that difference is about $4,578 per year.
One honest caveat up front. The $10.98 rate and $4,578 exemption anchor every example here. They come from a market data table, not a rate notice you can hold in your hand. Published rates and exemptions change year to year. Confirm both with the City Assessing Department, because if either number moves, so does every dollar figure below.
Why does Somerville's system reward people who live here?
Somerville uses the residential exemption on purpose. The goal is to shift more of the tax burden to landlords, investors, and higher-value properties while lowering the bill for people who live in their homes. That matters in a city where many buyers stretch hard to own.
A bigger state rule sits in the background: Proposition 2½, a Massachusetts law that limits how much a city can raise its total property tax collection each year. Confirm the exact rule with the Assessing Department. As one resident put it, "The city is very restricted in its ability to collect taxes because of Prop 2.5."
Because of that constraint, Somerville leans on exemptions and surcharges to decide who pays more and who gets relief.
Another piece is the Community Preservation Act, or CPA surcharge — a small extra charge added to your tax bill. Somerville voters approved raising the CPA surcharge. Confirm the current rate and effective year with the City of Somerville. That money supports affordable housing, parks, and historic preservation. Since 2014, affordable housing has drawn the largest share — $18.2 million — of the CPA's cumulative funding.
Somerville CPA Cumulative Funding by Use Since 2014
Compares cumulative CPA funding by major program category since 2014.
TOTAL
Affordable housing
51%$18.2 million
Historic preservation projects
27%$9.7 million
Open space and recreation
21%$7.6 million
| Series | Label | Value |
|---|---|---|
| Since 2014 cumulative funding | Affordable housing | $18.2 million |
| Since 2014 cumulative funding | Historic preservation projects | $9.7 million |
| Since 2014 cumulative funding | Open space and recreation | $7.6 million |
The CPA surcharge also has built-in relief. A portion of your home's value may be automatically exempt, and low-income and senior owner-occupants may be able to apply to avoid the surcharge. Confirm current rules with the Assessing Department.
The theme is consistent: Somerville's system gives the best tax treatment to people who own and live in the home. That said, a large share of the city's housing is renter-occupied. Most residents cannot access this owner-occupant break directly. Renters may bear part of the cost indirectly, through rents set by landlords paying the non-exempt rate.
What is the real math on a Somerville home?
For single-family homes, Somerville's median sold price reached $1,245,000 as of June 2026 — the city's priciest segment.
Median Sold Price by Somerville Property Type — June 2026
Compares June 2026 median sold prices across Somerville property segments using MLS data.
| Series | Label | Value |
|---|---|---|
| Median sold price | Single-family | $1,245,000 |
| Median sold price | Condo | $819,000 |
| Median sold price | Mixed | $870,000 |
Source:Repliers / MLSPIN
For our example we use a round $1,085,000 assessed value, a slightly conservative stand-in that sits just below that single-family median. Assessed value is the value the city uses for tax purposes; it is not always the same as your purchase price.
Here is the two-path math on the same property, using the $10.98 rate and $4,578 exemption.
FY2026 Somerville Property Tax Comparison for Owner-Occupant vs Landlord
Compares non-approximate FY2026 Somerville property tax line items for an owner-occupied versus landlord-owned $1,085,000 home using the stated $10.98 residential tax rate and residential exemption.
| Category | You (owner-occupant) | The landlord next door |
|---|---|---|
| Assessed value | $1,085,000 | $1,085,000 |
| Gross tax ($10.98 per $1,000) | $11,913 | $11,913 |
| Residential exemption | −$4,578 | $0 |
Somerville Property Tax Bill by Occupancy Scenario
Compares how the property tax bill is calculated for an owner-occupant, landlord/investor, and occupancy-based difference on a $1,085,000 Somerville residential assessed value using FY2026 assumptions.
| Category | How the bill works |
|---|---|
| Owner-occupant | $11,913 gross minus the $4,578 exemption |
| Landlord / investor | No residential exemption |
| Difference | Same property, different occupancy |
The landlord pays the full $11,913 gross tax. The owner-occupant subtracts the $4,578 exemption, leaving about $7,335. Same house, same rate, same assessed value — the only difference is who lives there. That is why the exemption is the big lever.
Does that lever really matter on an expensive home? It is a fair objection: on a $1.4M home, $4,578 is a small fraction of the total bill. That is true — the exemption is a smaller share on high-value homes. But the dollar amount holds, and it is a larger share on condos and lower-priced homes, where $4,578 is a bigger slice of the yearly carrying cost.
The CPA surcharge matters too, but it is smaller. Across property types, the monthly increase runs from $3.17 for a condo up to $18.18 for a 4-8 family, with the 1-Family line at $7.74.
Monthly Impact of the CPA Surcharge Increase by Property Type
Translates the proposed CPA surcharge increase into estimated monthly cost changes for average-value Somerville residential property types.
| Series | Label | Value |
|---|---|---|
| Monthly impact of surcharge change | Condo | $3.17 |
| Monthly impact of surcharge change | 1-Family | $7.74 |
| Monthly impact of surcharge change | 2-Family | $8.21 |
| Monthly impact of surcharge change | 3-Family | $11.12 |
| Monthly impact of surcharge change | 4-8 Family | $18.18 |
One caveat on the comparison: the exemption is a flat, fixed dollar amount, while the CPA surcharge is percentage-based. Over time, a rising surcharge and rising assessed values could narrow today's owner-versus-landlord gap. Treat the current numbers as a snapshot, not a permanent given.
Who does not get the residential exemption?
The residential exemption is generally only for your primary residence — the home where you actually live — and you have to file for it. Confirm the current rules with the Assessing Department. You generally do not get it if you are:
•A landlord renting the property out.
•A second-home owner who lives somewhere else.
•An investor holding the property in an LLC.
A large share of Somerville housing is renter-occupied, so much of the city's housing does not qualify.
There is a bright spot for Somerville's classic multi-family homes. If you live in one unit of a two- or three-family home, you may still be able to claim the exemption on the entire property. For an owner-occupant in a triple-decker, that can be a meaningful annual advantage. Low-income and senior owner-occupants may also qualify for extra relief. Confirm both with the Assessing Department.
What should you double-check before you budget?
First, confirm your eligibility. The exemption is based on occupancy, not just ownership. Buying a Somerville home does not automatically get you the discount — you need to live there and file properly.
Second, pay attention to timing. The exemption is tied to an assessment date set before you may have closed, so buyers who close over the summer often miss it in year one. Confirm that date and the filing deadline with the City of Somerville Assessing Department.
Because of this, budget on the landlord (no-exemption) figure — about $11,913 on our example — until eligibility is confirmed. Do not assume the lower net bill in year one. Then file immediately after closing, confirming the process and timing with the Assessing Department.
Third, remember that assessed value is not the same as sale price. Your offer price is what you pay the seller; your assessed value is what the city uses to calculate your bill. They can be close, but not automatically identical.
What does this mean if you are buying in Somerville now?
If you are buying to live in the home, the residential exemption can materially lower your carrying cost. Once you qualify, an owner-occupant pays about $7,335 versus about $11,913 for a landlord.
That affects how much cushion you keep after your mortgage, whether a condo fee feels manageable, and how competitive you feel making an offer.
There is a stability upside, with one honest qualifier. Proposition 2½'s cap and Somerville's tilt toward owner-occupants make the homeowner tax burden relatively predictable. But "predictable" does not mean flat — the CPA surcharge just rose, so individual line items can still climb. As one resident put it, the city has "incredibly reasonable real estate taxes, especially if you live in the unit/house you own."
So the core point: the $10.98 rate is only the starting point, and the $4,578 exemption is what changes the bill — provided both figures check out with the Assessing Department. If you live in the home, Somerville rewards you. If you rent it out, you pay full freight.
Want the real tax cost of a specific Somerville home? Send the address, and we can walk through the assessed value, likely exemption impact, and what the annual bill means for your budget.
