Upstairs Addition Cost Summary in Hillsborough, CA

On average this upstairs addition project costs $112500 in Hillsborough

Status: Project completed 6/24/2015
$51910 to $200000

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Upstairs Addition Service Costs in Hillsborough, CA

Average Upstairs Addition Cost

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Project Details

On average this upstairs addition project costs $112500 in Hillsborough, CA. Depending on your contractor, prices can range from $51910 to $200000. When pricing out your upstairs 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.

Remodel: Upstairs addition

What type of addition work is needed?
Adding another level
Do you have the necessary permits?
I need contractor to pull permits
What type of materials do you need?
Wood flooring, Tile flooring, Roofing, Siding, Windows, Trim, Doors, Hardware, Paint
Approximate square footage of the addition?

Excerpt Responses:
  • Hello. Thanks for give us opportunity to give you estimate .Please request an appointment.We have to meet personally,Check our website Viktor
  • to 300,000. Over 30 years in same location Bathrooms & Kitchens Over 30 years in same location
  • Hi there, rough estimate for the addition, let me know what you want to do.
    Please see my web page at

    Thank you.
    Louis Navas

More cost information & deals:

  • family room additions
  • cost to extend house
  • cost of home addition

Average Upstairs Addition Cost


Upstairs Addition Price Range

$51910 to $200000


Regional Averages

$100000 to $150000
Regional Average

Local Additions Contractors in Hillsborough, CA

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

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Additions Coupons in Orangevale, CA
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