How much does a garage addition cost in Cambridge, MA?

The average garage addition in Cambridge, MA costs $89,384 in 2026. Costs range from $40,629 for a basic project to $211,272 for a high-end renovation. Cambridge is 63% more expensive than the national average of $55,000.

What is the labor rate for contractors in Cambridge?

The average contractor labor rate in Cambridge, MA is $54.31/hour, compared to the national average of $30/hour. For a garage addition, labor typically accounts for 50% of the total cost, which is approximately $44,692 in Cambridge.

Are materials more expensive in Cambridge?

Cambridge has a material cost index of 144 (national average = 100). Materials cost about 44% more than the national average. For a garage addition, materials account for 50% of the cost, approximately $44,692.

Do I need a permit for a garage addition in Cambridge?

Yes, a garage addition typically requires building permits in Cambridge, MA. The average permit cost in Cambridge is $3,017. Always confirm requirements with the Cambridge building department before starting work.

Is a garage addition a good investment in Cambridge?

A garage addition provides an estimated 65% ROI nationally. In Cambridge, where the median home price is $607,888, this project costs about 14.7% of your home value. This is a moderate investment relative to home value — focus on features that appeal to buyers in the local market.

Garage Addition in Cambridge, MA — Costs $40,629 to $211,272

What does garage addition cost in Cambridge? Average $89,384, ranging $40,629–$211,272. Labor runs $54.31/hr locally — 63% above the national average. Free breakdown with material + labor split.

Cambridge, MA Market

+63% vs national

Labor 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 garage addition, which helps keep pricing competitive. At 63% 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 garage addition represents just 14.7% of typical home value — a relatively small investment that can significantly boost curb appeal or functionality.

Low Estimate

$40,629

National: $25,000

Mid-Range

$89,384

National: $55,000

High End

$211,272

National: $130,000

Per Sq Ft

$122

National: $75

Duration: 4-8 weeks

DIY: Hard

Permits: Required

ROI: 65%

Garage Addition Cost Calculator for Cambridge

Adjusted for Cambridge's labor rate ($54.31/hr) and material costs (index 144).

Project Size: 200 sq ft

50 sq ft1,000 sq ft

Quality Level

Mid-grade materials, good quality fixtures, standard options.

Estimated Total in Cambridge

$89,384

Based on 200 sq ft at mid quality, adjusted for Cambridge market rates.

Local Cost Breakdown

Labor (50%)$44,692

At Cambridge's average rate of $54.31/hr (81% above national avg)

Materials (50%)$44,692

Material cost index 144 (44% above national baseline of 100)

Garage Addition vs. Home Value in Cambridge

Metric	Cambridge	National Avg
Garage Addition (Mid-Range)	$89,384	$55,000
Median Home Price	$607,888	$350,000
Project as % of Home Value	14.7%	15.7%
Estimated ROI	65%	65%
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)
3Number of bays
4Attached vs detached
5Finished interior
6Loft storage

Popular Upgrades

Finished interior
Loft storage
EV charger circuit

Other Projects in Cambridge, MA

Second Story Addition

$325,033

HardROI 60%

Accessory Dwelling Unit (ADU) Construction

$243,775

HardROI 80%

Room Addition

$146,265

HardROI 55%

Swimming Pool Installation

$103,229

HardROI 40%

Home Addition

$128,532

MediumROI 60%

Inground Swimming Pool

$102,025

HardROI 43%

Attic Conversion

$90,403

HardROI 64%

Swimming Pool Construction

$82,184

Professional OnlyROI 43%

Garage Addition in Other Massachusetts Cities

Boston, MA

$88,743

-1%Pop. 675,647

Worcester, MA

$77,862

-13%Pop. 206,518

Springfield, MA

$74,177

-17%Pop. 155,929

Lowell, MA

$75,194

-16%Pop. 115,554

Brockton, MA

$73,847

-17%Pop. 105,643

Quincy, MA

$82,839

-7%Pop. 101,636

New Bedford, MA

$77,678

-13%Pop. 101,079

Lynn, MA

$73,306

-18%Pop. 99,989

Planning a Garage Addition in Cambridge

Building permits are typically required for a garage 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 4-8 weeks from start to finish.

A garage 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 $89,384 represents 90% of the typical household's annual income.

Garage 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.

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