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Quantum Builders For Sustainable Living

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Updated: Jun 17, 2026

Quantum Builders For Sustainable Living Construction

Quantum Builders For Sustainable Living Inc at 1454 B 4TH STREET, Berkeley, CA 94710, held a General Contractor license (#803821) with the California contractors license board with an expiration date of 02-03-2010. We last verified the license was inactive on 06-11-2026.

Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 336,931 California contractors.

If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.

Quantum Builders For Sustainable Living Inc Berkeley

Quality

Alert*

How is the BuildZoom score calculated?

Pro tip: We generally recommend hiring a contractor with a score higher than 95.

*No active license on file. If you are Quantum Builders For Sustainable Living Inc, click “This is My Business” to update your information.

Activity

1 project	2025
1 project	2023

Our building permit records indicate that Quantum Builders For Sustainable Living Inc has worked on at least 2.0 projects over the past 3 years.

This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.

Pricing

1 project

< $5k

Value Not Public: 0 projects

Pro tip: For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.

Building Permits by Quantum Builders For Sustainable Living Inc

Sort by: Notable Notable | Date Date | Job Value Job Value

This is a sample of this contractor's permits. Click here to access their complete permit history.

Commercial - electric service change

1310 Redwood Way, Petaluma, CA, 94954

2025-07-30

Installation of photovoltaic meter to existing photovoltaic system. photovoltaic system has already passed final inspection but pg&e recently requested to addition a photovoltaic meter to system

Valuation:

$5,000

Permit #:

ELEC-2025-0014

Status:

complete

Fee:

$230

Permit Type:

N/A

Building Type:

N/A

Residential electric service change

111 Prospect St, Petaluma, CA, 94952

2023-05-04

Upgrade of main service panel to 225a panel

Valuation:

$4,200

Permit #:

ELER-2022-0223

Status:

complete

Fee:

$117

Permit Type:

N/A

Building Type:

N/A

Building permit

2514 10th St, Berkeley, CA, 94710

2009-08-25

Finish 70% - 80% completed work started under permit # 05-3227 to addition 3 bedrooms bathroom and playroom to existing studio unit addition lower unit and change from live-work to dwelling: close walls sheetrock electrical plumbing & flooring per malcolm prince - charged 30% of valuation from permit 05-3227 to get new valuation for this project. mb2 sent expiration letter 1/15/09. km... see more

Valuation:

$66,281

Permit #:

0700002711

Status:

ISSUED

Fee:

N/A

Permit Type:

Bp-3 (3 wk

Building Type:

N/A

Building permit

1607 M L King Jr Way, Berkeley, CA, 94709

2007-06-25

App w him. the mechanical permit will be completed. this permit is to complete drywall throughtout finish elect issued.--bt mechanical plumbing and paint. on permit #05-4029 which was 80% pulled when the building permit is santiago at quatum const took a mechanical the remaining 20% consisting of: this permit is to complete work started

Valuation:

$25,000

Permit #:

0700001502

Status:

ISSUED

Fee:

N/A

Permit Type:

Bp-1 (1 wk

Building Type:

N/A

Project - building permit

314 Stanford Ave, Palo Alto, CA, 94306

2010-03-08

New 2-story single-family residence (1st: 1, 341-sf 2nd: 1, 219-sf attic: 99-sf) w/attached carport (200-sf); ammr approved for full-cavity sprayed cellulose insulation at roof - lp 12/16/09

Valuation:

$435,770

Permit #:

09000-00000-02266

Status:

issued

Fee:

$10,073

Permit Type:

N/A

Building Type:

N/A

Building/residential/r/new single family-duplex

5505 Sobrante Ave, El Sobrante, CA, 94803

2007-12-28

New single family residence per plans special inspection is required for piers. ha 02/06/08

Valuation:

N/A

Permit #:

BI406739

Status:

plancheck

Fee:

$5,219

Permit Type:

N/A

Building Type:

N/A

Building building permit

63 Olive Ave, Larkspur, CA, 94939

2009-07-20

Energy retrofit - changing out all windows same size and location adding insulation etc. and bathroom remodel

Valuation:

$0

Permit #:

09BLD-216

Status:

submittal approved

Fee:

$2,222

Permit Type:

N/A

Building Type:

N/A

Revision-building permit

314 Stanford Ave, Palo Alto, CA, 94306

2010-12-02

09-2266: ammr for (2) non-upc approved toilets

Valuation:

N/A

Permit #:

10REV-00000-00474

Status:

applied

Fee:

$340

Permit Type:

N/A

Building Type:

N/A

Revision-building permit

314 Stanford Ave, Palo Alto, CA, 94306

2010-12-09

09-2266: ammr for air admittance valves

Valuation:

N/A

Permit #:

10REV-00000-00492

Status:

applied

Fee:

$340

Permit Type:

N/A

Building Type:

N/A

Residential electrical - new

7050 Exeter Dr, Oakland, CA, 94611

2009-09-02

Temp power/new 1800 sq ft single family home w 2 bedrooms

Valuation:

N/A

Permit #:

RE0902557

Status:

final

Fee:

$167

Permit Type:

N/A

Building Type:

N/A

Residential mechanical - new

7050 Exeter Dr, Oakland, CA, 94611

2009-09-02

Mechanical/new single family dwelling radient heat 4 exh fans dryer vent

Valuation:

N/A

Permit #:

RM0901192

Status:

final

Fee:

$276

Permit Type:

N/A

Building Type:

N/A

Revision-building permit

314 Stanford Ave, Palo Alto, CA, 94306

2010-05-24

09-2266: foundation at sill plate and insulation details

Valuation:

N/A

Permit #:

10REV-00000-00164

Status:

issued

Fee:

$88

Permit Type:

N/A

Building Type:

N/A

Revision-building permit

314 Stanford Ave, Palo Alto, CA, 94306

2010-05-24

09-2266; revision to radiant tube layout

Valuation:

N/A

Permit #:

10REV-00000-00163

Status:

issued

Fee:

$88

Permit Type:

N/A

Building Type:

N/A

Residential electrical - new

7050 Exeter Dr, Oakland, CA, 94611

2009-09-02

Electrical/new single family dwelling 200 amp service

Valuation:

N/A

Permit #:

RE0902560

Status:

final

Fee:

$425

Permit Type:

N/A

Building Type:

N/A

Residential plumbing - new

7050 Exeter Dr, Oakland, CA, 94611

2009-09-02

Plumbing/new single family dwelling incl. gas test

Valuation:

N/A

Permit #:

RP0901891

Status:

final

Fee:

$575

Permit Type:

N/A

Building Type:

N/A

Electrical

3770 21st St, San Francisco, CA, 94114

2007-10-01

30 lights 30 switches 30 receptacles remodeling and rear yard addition

Valuation:

N/A

Permit #:

E200609271696

Status:

complete

Fee:

N/A

Permit Type:

N/A

Building Type:

N/A

Plumbing

3770 21st St, San Francisco, CA, 94114

2006-11-20

Replacing part of plumbing inside residence - building appl no. 200504140044 - amendment to permit no. 483634

Valuation:

N/A

Permit #:

486221

Status:

issued

Fee:

N/A

Permit Type:

N/A

Building Type:

N/A

Plumbing

3770 21st St, San Francisco, CA, 94114

2006-09-11

Replace sewer pipe under sidewalk at 3370 21st street

Valuation:

N/A

Permit #:

483634

Status:

issued

Fee:

N/A

Permit Type:

N/A

Building Type:

N/A

Plumbing

3770 21st St, San Francisco, CA, 94114

2007-03-07

Amend permit no. 483634 to addition shower pan

Valuation:

N/A

Permit #:

489414

Status:

issued

Fee:

N/A

Permit Type:

N/A

Building Type:

N/A

Building

3770 21st St, San Francisco, CA, 94114

2007-11-08

Rear yard addition including kch dining room renovation at 1st fl/recreation room at grnd floor

Valuation:

$250,000

Permit #:

200504140044

Status:

expired

Fee:

N/A

Permit Type:

N/A

Building Type:

27 - 1 family dwe...

Recent Buildzoom Projects

Inactive License

License #	803821
Status	Inactive
State	California
Type	General Building
Business Type	Corporation

According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.

Check this license's status for Quantum Builders For Sustainable Living Inc at the California Contractors State License Board.

This is a sample of licensing data; click here to access a complete history.

Inactive License

License #	940310
Status	Inactive
State	California
Type	General Building
Business Type	Corporation

According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.

Check this license's status for Quantum Builders For Sustainable Living Inc at the California Contractors State License Board.

This is a sample of licensing data; click here to access a complete history.

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BuildZoom Score

How the BuildZoom Score works
*No active license on file. If you are Quantum Builders For Sustainable Living Inc, click “This is My Business” to update your information.

Bonded

Bonded Agent	Ullico Casualty Company
Bond Value	$12,500

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Insured

Workers Comp Provider

Granite State Insurance Company

Learn More

11

Permits

Building permit records show that Quantum Builders For Sustainable Living Inc has worked on 11 permitted projects.

Follow this contractor

Before you Hire

Here are some rules, regulations, and laws governing general contractors in California:

Does Quantum Builders For Sustainable Living Inc carry a valid contracting license?

In California, any remodeling or construction project that exceeds $500 (labor and materials), requires a contractor to have an active license with the California Contractor State License Board (CSLB).

Quantum Builders For Sustainable Living Inc currently holds license 803821, 940310 (General Building), which was Inactive when we last checked.

How important is contractor licensing in California?

The CSLB is one of the highest rated licensing boards in the US. Applicants are required to pass a written board exam and prove at least four years of prior, relevant work experience. In addition, the CSLB requires all license holders to maintain at least $2,500 in operating capital and provides you with a range of other consumer protections.

Your liability risk when hiring Quantum Builders For Sustainable Living Inc

Contractors in California are required to carry workers' compensation insurance if they have employees and proof of liability insurance with the cumulative limit of $1 million for licensees with five or fewer persons, and an additional 100,000 for each additional member over five, not to exceed $5 million total.

Financial recourse when hiring Quantum Builders For Sustainable Living Inc

All licensed contractors in California are required to maintain a bond, which provides you with financial recourse in case they perform defective work or violate license regulations. If you feel as though you have been taken advantage of, you should leave feedback on the contractor's BuildZoom profile and file a complaint with the CSLB.

Quantum Builders For Sustainable Living Inc has a $12,500 bond with Ullico Casualty Company.

What else should I know before hiring Quantum Builders For Sustainable Living Inc

California contractors are required to submit their fingerprints to the board, which are then checked against criminal records held by the California Department of Justice (DOJ) and Federal Bureau of Investigation (FBI) prior to obtaining a valid contracting license.

How is the BuildZoom score calculated?

The BuildZoom score is based on a number of factors including the contractor's license status, insurance status, verified work history, standing with local consumer interest groups, verified reviews from other BuildZoom users and self-reported feedback from the contractor.

Why you should hire through BuildZoom

When it comes to major construction work or even minor alterations to your home, hiring the wrong contractor could result in incomplete or defective work. You may even find yourself dealing with huge liability claims. BuildZoom does the homework for you and helps you hire the right contractor.

You should get several bids before hiring a contractor

The California State License Board recommends getting at least three written bids before hiring a contractor. Do not automatically accept the lowest bid - an abnormally low bid may indicate the contractor made a mistake and is not including the same work quoted by their competitors. We've made the bid collection process extremely simple (and free). Just click here to get started.

The best way to use BuildZoom is to let us recommend contractors for your remodeling projects.

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BuildZoom’s database now contains every licensed contractor across the U.S. - over 2.5 million of them... Categorized contractor profiles are enriched using government data from state licensing boards, Better Business Bureau ratings, and more… BuildZoom jumped into the fray by announcing that it raised $10.6 million in a round led by Formation 8. ...the Y combinator-backed startup said it will be focused on remodeling projects, where the median budget is around $19,000… A new index compiled by BuildZoom — which identifies contractors for projects — found that renovations are running 2.8 percent above their 2005 level…

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