Room Addition Cost Summary in San Jose, CA

On average this room addition project costs $72500 in San Jose

Status: Project completed 11/22/2015
$46930 to $187750

Where do you need the work done?


Room Addition Service Costs in San Jose, CA

Average Room Addition Cost
Prefabricated Room Additions
1 review. 20 years in business.
4212 N. Freeway Blvd. Suite 5, Sacramento, CA

Budget Room Addition

$18500 to $20000

Added Value Room Addition

$180000 to $200000

Want a Professional Estimate?

Where do you need the work done?


Project Details

On average this room addition project costs $72500 in San Jose, CA. Depending on your contractor, prices can range from $46930 to $187750. When pricing out your room addition project make sure to get at least 3 quotes to compare prices and get the best value. Comparable projects nearby include Extend House in Palo Alto, Lend Design in Los Angeles, and Room Addition in Poway.

Addition: Room Addition

What type of work do you need done on your home?
New installation
Approximate square footage of area that needs work?
What is your budget?
290 households have had similar projects done near Lakewood Village (Lakewood), Sunnyvale East, and Alma.

Excerpt Responses:
  • i would like to meet you and see what you have in mind. based on the footage your budget should seems High
    . Do you have plans yet
    Have you filed for a permit
    If not I can help through these steps
    Thank you

  • Hello Valued Homeowner,

    My name is Michael Vaggione. The name of my company is Vaggione Properties. I am a state licensed contractor, lic. # 403485
    This is rough estimate for your addition. When you have time, I would like to come by and firm up the scope and price of this job with a no obligation free consultation.

    Thank you for the opportunity to give you this rough estimate. I hope that we can do business.

    Thanks again
    Michael Vaggione
  • We are family owned and operated and have serviced the San Jose, CA Bay Area for over 40 years. would like to see the project. Joe. Really need to see space and what you want to give an exact price.

More cost information & deals:

  • addition cost
  • 2nd floor addition
  • cost of building a room

Average Room Addition Cost


Room Addition Price Range

$46930 to $187750


Regional Averages

Regional Average

Local Additions Contractors in San Jose, CA

Overall Rating:
San Jose Addition Contractors
are rated 3.4 out of 5 in total.
Remodeling Garage
1564 Palos Verdes Mall, Walnut Creek, CA
Sunrooms Additions
    14 reviews. 26 years in business.
Hayward, CA
Building Onto a House
    6 reviews.
5918 Charter Oaks Drive, Castro Valley, CA
How Much Does an Addition Cost
    4 reviews.
San Jose, CA
Home Addition Ideas
    4 reviews.
1446 17th AveSte 4, San Francisco, CA
House Additions
    2 reviews. 18 years in business.
Fresno, CA
Bedroom Addition
    1 review. 25 years in business.
28 N Crescent Avenue, Lodi, CA
House Remodeling Contractors
Sausalito, CA
Cost To Extend House
    3 reviews. 9 years in business.
San Jose, CA
Room Addition Ideas
    6 reviews. 10 years in business.
2684 D Street, Hayward, CA
Room Addition Cost Calculator
    1 review.
1520 Alcatraz Avenue, Berkeley, CA
Ranch Home Additions
    16 reviews. 25 years in business.
20240 Anita ave, Castro Valley, CA
Garage Additions
    1 review.
Sausalito, CA
Room Additions Plans
PO Box 660, Pescadero, CA
Addition Contractors
    5 reviews.
P.O. Box 1652, Los Altos, CA
Cost To add a Room
    2 reviews.
29461 Kohoutek Way, Union City, CA
Prefabricated Additions
    3 reviews.
502 Auzerais Avenue, San Jose, CA
Cost of a Room Addition
    2 reviews.
573 Price Street, Daly City, CA
Cost of Building an Addition
    2 reviews. 20 years in business.
PO Box 829, Mountain Ranch, CA
Prefab Room Additions
    1 review. 20 years in business.
4212 N. Freeway Blvd. Suite 5, Sacramento, CA
Home Addition Contractors
1673 Novato Blvd Apt 1, Novato, CA
Building an Addition To a House
     12 years in business.
324 Dutch Ravine Ln, Newcastle, CA
Family Room Addition Cost
     20 years in business.
22962 Amador St, Hayward, CA

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Neighborhoods we service in San Jose, CA

Zip Codes in the San Jose, CA service area

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