Home Addition in Cambridge, MA — Costs $48,200 to $321,330
What does home addition cost in Cambridge? Average $128,532, ranging $48,200–$321,330. Labor runs $54.31/hr locally — 61% above the national average. Free breakdown with material + labor split.
Cambridge, MA Market
+61% vs nationalLabor Rate
$54.31/hr
Material Index
144
Avg Permit Cost
$3,017
Median Home Price
$607,888
Cambridge is a mid-sized city in Massachusetts with a healthy pool of local contractors. Homeowners generally have several options to compare for a home addition, which helps keep pricing competitive. At 61% above the national average, Cambridge is one of the more expensive markets for home improvement — driven primarily by above-average labor rates in the region. With a median home price of $607,888, this home addition represents just 21.1% of typical home value — a relatively small investment that can significantly boost curb appeal or functionality.
Low Estimate
$48,200
National: $30,000
Mid-Range
$128,532
National: $80,000
High End
$321,330
National: $200,000
Per Sq Ft
$24
National: $15
Home Addition Cost Calculator for Cambridge
Adjusted for Cambridge's labor rate ($54.31/hr) and material costs (index 144).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Cambridge
$128,532
Based on 200 sq ft at mid quality, adjusted for Cambridge market rates.
Local Cost Breakdown
At Cambridge's average rate of $54.31/hr (81% above national avg)
Material cost index 144 (44% above national baseline of 100)
Home Addition vs. Home Value in Cambridge
| Metric | Cambridge | National Avg |
|---|---|---|
| Home Addition (Mid-Range) | $128,532 | $80,000 |
| Median Home Price | $607,888 | $350,000 |
| Project as % of Home Value | 21.1% | 22.9% |
| Estimated ROI | 60% | 60% |
| Median Household Income | $98,948 | $75,000 |
What Affects the Price in Cambridge
- 1Local labor rates ($54.31/hr in Cambridge)
- 2Material cost index (144 vs national 100)
- 3Material quality
- 4Labor rates
- 5Project size
Popular Upgrades
- Premium materials
- Custom design
Other Projects in Cambridge, MA
Home Addition in Other Massachusetts Cities
Planning a Home Addition in Cambridge
Building permits are typically required for a home addition in Cambridge. The average permit fee in this area is $3,017, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 1-2 weeks from start to finish.
A home addition is a complex project best left to licensed professionals. In Cambridge, skilled contractors charge an average of $54.31/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
With a median household income of $98,948, many Cambridge residents can budget for this project through savings. The mid-range cost of $128,532 represents 130% of the typical household's annual income.
Home Addition — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
All Construction Costs in Cambridge
View labor rates, material costs, and project estimates for Cambridge, MA.
Explore All Project Cost Guides
Compare costs across 120+ home improvement projects in 3,636 cities nationwide.
View All Project Costs