Suffolk County Home Building Costs
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). Population: 810,000.
Real Permit Activity in Suffolk County (2025)
Permit valuations are builder-declared at filing and typically understate final construction cost.
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 local 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)
- Massachusetts issued 5,018 single-family permits in 2025 overall. See the 35-year state history.
Reconciling our estimate with permit filings
The average declared valuation on Suffolk County permits was $307,865 per single-family unit, against our $608,000 estimate for a 2,000 sq ft mid-range build. These two numbers are not measuring the same thing and should not match: builders declare a valuation for permit-fee purposes, which is routinely below the finished construction cost, and the permits cover homes of every size and finish level rather than a 2,000 sq ft mid-range one. We show both because the gap between them is itself informative — and because quoting only the flattering one would be dishonest.
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 |
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 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. For planning purposes only.