Updated: Jun 01, 2026
Location and Projects
Address
1600 HILLGRADE AVE, Alamo, CA, 94507
Use our bidding system to
request a quote
TIM COSETTI Construction
Serving clients throughout Alamo, California, Tim Cosetti has provided construction and remodeling services for more than three decades. With 34 years of experience in the industry, Cosetti works with residential property owners on a wide range of building and renovation projects. His expertise spans interior and exterior upgrades, reflecting long-term familiarity with local building codes and construction practices. Throughout his career in Alamo, Cosetti has contributed to home improvement initiatives tailored to the needs and preferences of area homeowners. The company’s longstanding presence in the region underscores a detailed knowledge of property styles and requirements specific to Contra Costa County. Tim Cosetti continues to offer construction solutions suited to both classic and modern residential projects in the Alamo area.
TIM COSETTI Services
Start a project today:
TIM COSETTI Contact Information
Phone Number: (925) 594-2010
Edit
Address: 1600 HILLGRADE AVE, Alamo, CA 94507
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
TIM COSETTI Alamo
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
TIM COSETTI has a BuildZoom score of 95, which places them above 78% of 336,931 contractors in California.
Activity
|
1 project
|
2023 |
Our building permit records indicate that TIM COSETTI has worked on at least
1.0 project 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.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
< $5k |
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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Convert unconditioned patio enclosure into conditioned space approx. 253sf ** electrical is existing per contractor done under permit 399571 when patio was enclosed. ** **5/16/18** expired permit reissued at 10% fee for final inspection
Valuation:
$19,527
Permit #:
BIAD16-011512
Status:
final
Fee:
$1,140
Permit Type:
N/A
Building Type:
N/A
Emergency panel change to 400 amp (all electric home - no gas). aic letter from pg&e required to be onsite for inspector
Valuation:
N/A
Permit #:
BIE20-008494
Status:
final
Fee:
$279
Permit Type:
N/A
Building Type:
N/A
New single family residence approximately 3992 sq. ft. of new living space and 626 sq. ft. for new attached garage per plans ** please give tags only to larry byers per ljb**
Valuation:
N/A
Permit #:
BI397607
Status:
final
Fee:
$10,576
Permit Type:
N/A
Building Type:
N/A
Addition - 1353 sq. ft. of living space and 519 sq. ft. for a garage addition per plans protective fencing required around trees within 50 feet of construction
Valuation:
N/A
Permit #:
BI401535
Status:
plancheck
Fee:
$4,021
Permit Type:
N/A
Building Type:
N/A
Replace 50g water heater in same location
Valuation:
N/A
Permit #:
BIPL15-008268
Status:
final
Fee:
$132
Permit Type:
N/A
Building Type:
N/A
Building new secondary unit - 2br and 1bath no garage. 1040 sqft at rear of property (address of front property is 2327 w ave. 133rd)
Valuation:
$133,000
Permit #:
BLD2003-00260
Status:
final
Fee:
$10,803
Permit Type:
N/A
Building Type:
N/A
Change electric meter panel
Valuation:
$2,000
Permit #:
BIE23-005928
Status:
final
Fee:
$133
Permit Type:
N/A
Building Type:
N/A
Replace 40 gal water heater
Valuation:
N/A
Permit #:
BIPL16-000853
Status:
final
Fee:
$132
Permit Type:
N/A
Building Type:
N/A
Install insulation under floor &45sf wall; drywall repair
Valuation:
$6,800
Permit #:
B14-1160
Status:
final
Fee:
$142
Permit Type:
N/A
Building Type:
N/A
Remove and replace existing deck 2-1-16- reinstated permit 10% only final inspection needed//nmt
Valuation:
N/A
Permit #:
BIMIR15-003221
Status:
final
Fee:
$870
Permit Type:
N/A
Building Type:
N/A
To replace electrical sub-panel
Valuation:
N/A
Permit #:
BIE12-002061
Status:
final
Fee:
$131
Permit Type:
N/A
Building Type:
N/A
Single family residence w/att garage
Valuation:
N/A
Permit #:
BIR0000187483
Status:
final
Fee:
$7,332
Permit Type:
N/A
Building Type:
N/A
Temporary power
Valuation:
$0
Permit #:
C9202866
Status:
Final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Temporary power
Valuation:
N/A
Permit #:
C9202866
Status:
FINAL
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Emergency panel change to 400 amp (all electric home - no gas). aic letter from pg&e required to be onsite for inspector
Valuation:
N/A
Permit #:
BIE20-008494
Status:
final
Fee:
$279
Permit Type:
N/A
Building Type:
N/A
Relocate gas meter and upgrade main service 200 amp (meter prep for secondary unit to follow)
Valuation:
$2,500
Permit #:
BLD2004-01728
Status:
expired
Fee:
$218
Permit Type:
N/A
Building Type:
N/A
Install 16 windows in kind and 2 water heaters
Valuation:
$5,000
Permit #:
04-1697
Status:
expired
Fee:
$381
Permit Type:
Duplex
Building Type:
N/A
Addition posts to support cantilever portion of kitchen
Valuation:
N/A
Permit #:
BIAL13-001450
Status:
expired
Fee:
$589
Permit Type:
N/A
Building Type:
N/A
Replace (2) interior pocket doors with swinging doors move (2 electrical switches and replace wire from sub-panel to dryer install new drywall. all work in laundry room ** may require floor plan - subject to field inspector's approval **
Valuation:
N/A
Permit #:
BIAL12-005308
Status:
expired
Fee:
$238
Permit Type:
N/A
Building Type:
N/A
Replace 4 beams due to sagging in living room ** 12-2-2011 --- revision to include electrical for repair of some rough wiring in vicinity of framing repairs --- bdb ** ** 2-1-2012 -- revision to include plumbing and mechanical repairs -- bdb ** 2/14/12 revision: omit beam replacement replace 1/2 wall in kitchen
Valuation:
N/A
Permit #:
BIAL11-002127
Status:
expired
Fee:
$684
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
242
BZ Score
$59K
Avg Project
-
Projects
193
BZ Score
$200K
Avg Project
-
Projects
246
BZ Score
$30K
Avg Project
-
Projects
TIM COSETTI Reviews
BuildZoom hasn't received any reviews for TIM COSETTI. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
TIM COSETTI License info
Verified License
| License # | 446276 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for TIM COSETTI at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 353441 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- 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 TIM COSETTI at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Bonded
| Bonded Agent | Business Alliance Insurance Company |
| Bond Value | $15,000 |
12
Permits
- Building permit records show that TIM COSETTI has worked on 12 permitted projects.
TIM COSETTI Employees
DM
David William Maderis
Qualify Partner
TC
Timothy Alan Cosetti
Owner