Three-Season Room Addition in Brockton, MA — Costs $10,683 to $86,801
What does three-season room addition cost in Brockton? Average $33,385, ranging $10,683–$86,801. Labor runs $42.46/hr locally — 34% above the national average. Free breakdown with material + labor split.
Brockton, MA Market
+34% vs nationalLabor Rate
$42.46/hr
Material Index
127
Avg Permit Cost
$1,622
Median Home Price
$426,069
Brockton is a mid-sized city in Massachusetts with a healthy pool of local contractors. Homeowners generally have several options to compare for a three-season room addition, which helps keep pricing competitive. At 34% above the national average, Brockton is one of the more expensive markets for home improvement — driven primarily by above-average labor rates in the region. The median home in Brockton is valued at $426,069, putting this project at about 7.8% of home value — a moderate investment with a projected 50% ROI.
Low Estimate
$10,683
National: $8,000
Mid-Range
$33,385
National: $25,000
High End
$86,801
National: $65,000
Per Sq Ft
$127
National: $95
Three-Season Room Addition Cost Calculator for Brockton
Adjusted for Brockton's labor rate ($42.46/hr) and material costs (index 127).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Brockton
$33,385
Based on 200 sq ft at mid quality, adjusted for Brockton market rates.
Local Cost Breakdown
At Brockton's average rate of $42.46/hr (42% above national avg)
Material cost index 127 (27% above national baseline of 100)
Three-Season Room Addition vs. Home Value in Brockton
| Metric | Brockton | National Avg |
|---|---|---|
| Three-Season Room Addition (Mid-Range) | $33,385 | $25,000 |
| Median Home Price | $426,069 | $350,000 |
| Project as % of Home Value | 7.8% | 7.1% |
| Estimated ROI | 50% | 50% |
| Median Household Income | $86,782 | $75,000 |
What Affects the Price in Brockton
- 1Local labor rates ($42.46/hr in Brockton)
- 2Material cost index (127 vs national 100)
- 3Size
- 4Foundation type
- 5Screen vs window panels
- 6Roof style
Popular Upgrades
- Interchangeable screen and window panels
- Ceiling fans
- Outdoor-rated furniture
Other Projects in Brockton, MA
Second Story Addition
$268,533
Accessory Dwelling Unit (ADU) Construction
$201,400
Room Addition
$120,840
Swimming Pool Installation
$86,329
Home Addition
$106,832
Inground Swimming Pool
$85,856
Attic Conversion
$74,246
Swimming Pool Construction
$67,497
Three-Season Room Addition in Other Massachusetts Cities
Planning a Three-Season Room Addition in Brockton
Building permits are typically required for a three-season room addition in Brockton. The average permit fee in this area is $1,622, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 2-4 weeks from start to finish.
A three-season room addition is a complex project best left to licensed professionals. In Brockton, skilled contractors charge an average of $42.46/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
With a median household income of $86,782, many Brockton residents can budget for this project through savings. The mid-range cost of $33,385 represents 38% of the typical household's annual income.
Three-Season Room Addition — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
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