Updated: Jun 15, 2026
Location and Projects
Address
Twain Harte, Twain Harte, CA, 95383
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Cornerstone Construction
Cornerstone Construction is a company that’s committed to providing you with amazing work, whether you need a remodel, or are building a home from the ground up. Our experts have over 18 years of experience in the industry, and offer excellent customer service, fair prices, and quality construction. We handle every single aspect of the project, which means that you don’t have to worry about trying to find multiple companies for one job. We take pride in the work we do, and that shows in every job, no matter how big or small. If you’d like to learn more, then consider giving us a call. Get your free estimate today.
From BuildZoom: Cornerstone Construction, Twain, Harte, CA (Employee: George Abraham) holds a General Building license and 4 other licenses according to the California license board.
Their BuildZoom score of 114 ranks in the top 2% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Cornerstone Construction, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Cornerstone Construction Services
Start a project today:
Custom Home Build
New Home Construction
Other Residential New Const...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Other Residential Remodel
Other Commercial Renovation
Other Commercial New Constr...
Small Multi-Family Remodel ...
Whole Home Remodel
Addition
Attic Remodel
Single Room Remodel
Cosmetic Remodel
Cornerstone Construction Contact Information
Phone Number: (209) 352-3354
Address: Twain Harte, Harte, CA 95383
Cornerstone Construction Harte
Quality
114
98th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Cornerstone Construction has a BuildZoom score of 114, which places them above 98% of 336,931 contractors in California.
Activity
|
2 projects
|
2024 |
|
10 projects
|
2023 |
Our building permit records indicate that Cornerstone Construction has worked on at least
12.0 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.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
5 projects
|
New Constructions |
Analyzing permits over the last 4 years shows that Cornerstone Construction mostly works on
new construction
projects.
Pricing
|
2 projects
|
$20k-$50k |
|
3 projects
|
$50k-$100k |
|
1 project
|
$100k-$250k |
The typical size of their permits is approximately $55,812. This graph shows the distribution of these job values.
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 Cornerstone Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
Eplan reduce rear bedroom by 72 sf interior remodel in master bedroom and hallway closet change existing window to new door in dining room. per engineering design
Valuation:
$35,000
Permit #:
23016-20000-11004
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Interior kitchen remodel/repair (no changes in walls or openings). 2 bathroom(s).bathroom remodel for residential buildings (no structural changes)
Valuation:
$20,000
Permit #:
23016-90000-14227
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Interior kitchen remodel/repair (no changes in walls or openings). interior bathroom remodel/repair (no changes in walls or openings). replace damaged wood framing (less than 10%). same size spacing type
Valuation:
$8,000
Permit #:
21016-90000-07191
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Reroof with 7 sqrs comparable shingle roofing over new solid sheathing. re-roof with class a or b material weighing less than 6 pounds per sq. ft. for residential roof replacement > 50% of the total roof area apply cool roof product labeled and certified by cool roof rating council (crrc). cool roof may be required for non-residential buildings per title 24 part 6 section 149(b). repl... see more
Valuation:
$19,700
Permit #:
20016-90000-32998
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Single family residence + 7.6 kw roof mount solar
Valuation:
$326,717
Permit #:
B2019-02301
Status:
final
Fee:
$14,559
Permit Type:
New single family...
Building Type:
N/A
1 fau under 100000 b.t.u 1 refrigeration- altered repaired or added to air-conditioning- altered repaired or added to heating - altered repaired or added to 2 appliances or piece of equipment not classified or listed to ( 1 air curtain and 1 dehumidifier) 1 connection of equipment to a gas system
Valuation:
N/A
Permit #:
BM1925478
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
2, 700 sf tenant improvement for new ?nothing bundt cakes? take-out only bakery. change of use and occupancy from ?m? occupancy retail to ?b? occupancy bakery. work includes new non-load bearing partitions millwork finishes ceilings fixtures and equipments. no change in area
Valuation:
N/A
Permit #:
BB1925471
Status:
complete
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Deck replacement
Valuation:
$250,000
Permit #:
B2022-01817
Status:
issued
Fee:
$1,022
Permit Type:
Decks
Building Type:
N/A
1 toilet 5 sinks 1 water heater 1 floor drain 4 other fixtures ( 2 indirect waste interceptor 1 pot filler 1 hp dispenser) 1 grease trap 2 miscellaneous items ( 1 exp. tank 1 trap primer) and 3 low pressure gas outlets
Valuation:
N/A
Permit #:
BP1925475
Status:
final
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
New single family dwelling + 8.1kw roof mount solar
Valuation:
$228,476
Permit #:
B2021-00063
Status:
final
Fee:
$13,639
Permit Type:
New single family...
Building Type:
N/A
Bldg-alter/repair
18401 W Superior St, Los Angeles, CA, 91325
2023-05-12
Supplemental permit to 22016-20000-28686 to change contractor of record
Valuation:
N/A
Permit #:
22016-40001-28686
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
New 25 x 18 detached recreation room with 1/2 bathroom all work per wfpp- see comments
Valuation:
$50,000
Permit #:
20010-20000-04007
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New detached garage
Valuation:
$51,624
Permit #:
B2022-00529
Status:
final
Fee:
$1,073
Permit Type:
Garage/shed/barn
Building Type:
N/A
Interior bathroom remodel/repair (no changes in walls or openings)
Valuation:
$4,000
Permit #:
22016-90000-17683
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Interior bathroom remodel/repair (no changes in walls or openings)
Valuation:
$2,000
Permit #:
22016-90000-17684
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
7 dedicated circuits 7 new gfci duplex outlets 4 ceiling can lights 1 cabinet undercouter light
Valuation:
N/A
Permit #:
20041-90000-20842
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Reroute drainage for washer/dryer reroute copper pipes for washer/dryer/refrigerator replace water heater new toilet new vanity
Valuation:
N/A
Permit #:
20042-90000-11661
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Install 3 gang meter panel
Valuation:
N/A
Permit #:
23041-90000-30252
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition one (1) additional 100 amp panel and service for adu. existing 100amp panel and meter to remain untouched
Valuation:
N/A
Permit #:
20041-90000-24269
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
45 outlets 71 branch ciruicts 1 subpanel 72 spaces 2 motors 5-20 h.p and 2 motors 20-50 h.p. revision 6/1/2020
Valuation:
N/A
Permit #:
BE1925473
Status:
final
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
Cornerstone Construction Reviews
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Verified License
BuildZoom confirmed this contractor's license
Cornerstone Construction License info
Verified License
| License # | 1027598 |
| Status | Active |
| State | California |
| Type | General Building |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Cornerstone Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 370343 |
| Status | Inactive |
| State | California |
| Type | General Building |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Cornerstone Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 423718 |
| Status | Inactive |
| State | California |
| Type | General Building, Electrical |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Cornerstone Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 881814 |
| Status | Inactive |
| State | California |
| Type | General Building |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Cornerstone Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Unverified License
| Status | Unable To Verify |
- BuildZoom was not able to verify this license with the licensing board
This is a sample of licensing data; click here to access a complete history.
114
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
97
Permits
- Building permit records show that Cornerstone Construction has worked on 97 permitted projects.
Cornerstone Construction Employees
GA
George Abraham
Sole Owner