Cost to Build a House in Suffolk County, Massachusetts
Building a house in Suffolk County, Massachusetts costs about $304/sq ft in 2026 — roughly $535,040–$680,960 for a 2,000 sq ft mid-range home (construction only, land excluded). 231 single-family homes were permitted here in 2025, and the typical existing home is worth $802,190. Population: 810,000.
That applies a local adjustment of +20% to the Massachusetts average of $253/sq ft.
How much building happens in Suffolk County
Single-family homes permitted each year, 2000–2025. 2025 is highlighted; the 2008–2011 crash years are darker.
Suffolk County is building more homes now than at any point before the 2008 crash — a genuinely expanding market, which usually means an established pool of builders and subdivision lots, but also competition for crews.
U.S. Census Bureau Building Permits Survey, county annual files 2000–2025 (1-unit structures, total including imputation).
Build or buy in Suffolk County?
Building a median-size new home in Suffolk County costs about $650,247 more than buying the typical existing one. That gap is wider than the Massachusetts average of +74.4%, because existing homes here are cheaper than elsewhere in the state.
The two sides are not the same product: the build is brand new at the median new-home size for the Northeast, the existing home is typically older and smaller. Lot cost uses Massachusetts's average land share, and local lot prices can be well above or below it. Full Massachusetts build-vs-buy comparison
Existing home value: Zillow Home Value Index, single-family, middle tier (2026-08) — an index of typical value, not a median sale price. Land: FHFA Working Paper 19-01.
What builders declared on Suffolk County permits (2025)
The average declared valuation was $307,865 per home, against our $608,000 estimate for a 2,000 sq ft mid-range build. The two measure different things: builders declare a valuation for permit-fee purposes, which routinely understates finished cost, and permits cover homes of every size and finish level. We show both because quoting only the flattering one would be dishonest.
Source: U.S. Census Bureau Building Permits Survey, 2025 annual data.
Local Market Factors
- ›Boston proper
- ›Highest costs in state
- ›Limited lots, complex permitting
What building in Suffolk County actually involves
Cost per square foot is one number. These are the conditions behind it.
How busy this market is
Suffolk County ranks 9th of 14 counties in Massachusetts for single-family permits issued in 2025, accounting for 4.6% of all the single-family homes permitted statewide that year.
That is a quieter market. Fewer active builders can mean less competitive bidding and longer waits for specialised trades.
U.S. Census Bureau Building Permits Survey, co2025a.txt (2025).
What land adds on top
Land averages 48.6% of finished property value in Massachusetts, which is a markup of about 95% on construction cost. For the $608,000 build above, that implies roughly $577,600 for the lot.
This is a statewide figure. Lots inside Suffolk County's built-up areas will run above it and rural parcels below, so treat it as an order of magnitude rather than a budget line.
FHFA Working Paper 19-01 land values.
What the trades cost
Median hourly wage, Massachusetts. BLS Occupational Employment and Wage Statistics, May 2025.
Climate, spec and timing
- 5,740 heating and 632 cooling degree days a year in Massachusetts — heating drives the mechanical budget. (NOAA, 2016-2025 average)
- The median new home in the Northeast is 2,459 sq ft and the Census median contract price there is $179.3/sq ft, excluding land — the same basis as our estimate above. (Census Survey of Construction 2025)
- Statewide, permit filings peak in June and bottom out in February. Contractors have the most capacity in the quiet months.
- Massachusetts issued 5,018 single-family permits in 2025 overall. See the 35-year state history.
Cost by Home Size in Suffolk County
| Home Size | Basic | Mid-Range | Premium |
|---|---|---|---|
| 500 sq ft | $112,383 | $152,000 | $206,979 |
| 1,000 sq ft | $224,766 | $304,000 | $413,957 |
| 1,500 sq ft | $337,149 | $456,000 | $620,936 |
| 2,000 sq ft | $449,532 | $608,000 | $827,915 |
| 2,500 sq ft | $561,915 | $760,000 | $1,034,894 |
| 3,000 sq ft | $674,298 | $912,000 | $1,241,872 |
| 4,000 sq ft | $899,064 | $1,216,000 | $1,655,830 |
| 5,000 sq ft | $1,123,830 | $1,520,000 | $2,069,787 |
Other Massachusetts counties
Costs are estimates only and represent construction costs, excluding land, architect fees, permits, and landscaping. Land in Massachusetts averages 48.6% of finished property value (FHFA), which adds roughly 95% on top of these construction figures.
County multiplier of 1.20× applied to the Massachusetts state average (which itself is 1.35× the national average of $188/sq ft).
Cost data: HouseBuildCalc Permit Cost Index (876,000+ building permits, 1,700+ ZIP codes), U.S. Census Bureau Survey of Construction, BLS Producer Price Index, NAHB Cost of Constructing a Home (published summaries). County-level multipliers are estimates derived from regional market data. County permits: U.S. Census Bureau Building Permits Survey. Home values: Zillow Home Value Index. For planning purposes only.