Updated: May 23, 2026
Location and Projects
Address
5939 DARTMOUTH AVE, Alta Loma, CA, 91737
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Cornerstone Restoration Construction
Cornerstone Restoration Inc, 5939 Dartmouth Ave, Alta Loma, CA (Owned by: John Stanley Poyser) holds a General Building license and 1 other license according to the California license board.
Their BuildZoom score of 93 ranks in the top 27% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Cornerstone Restoration Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Cornerstone Restoration Inc Services
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Cornerstone Restoration Inc Contact Information
Phone Number: (909) 609-6764
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Address: 5939 DARTMOUTH AVE, Alta Loma, CA 91737
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Building Permits by Cornerstone Restoration Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
[bld22-001880] (b) plan check for fire repairs and restorati - to original state as per attached plans for new second storie unit built without permits
Valuation:
N/A
Permit #:
BPC21-001329
Status:
final
Fee:
$641
Permit Type:
S-fam residential
Building Type:
N/A
Re-roof with composition shingles (installation of roof covering shall comply with title 24 building efficiency standards)
Valuation:
N/A
Permit #:
B18-000226
Status:
final
Fee:
$269
Permit Type:
Re-roof
Building Type:
N/A
Install one 4'x4 windows in the bedroom
Valuation:
N/A
Permit #:
B18-000227
Status:
issued
Fee:
$225
Permit Type:
Window installati...
Building Type:
N/A
Revisions (extend sliding glass door; change from posts to strong walls) 386sf master bedroom addition; 97sf patio conversion into a family room; 368 sf remodel (master bathroom mudroom/laundry bathroom and walk-in pantry) (see pmt2020-02618)
Valuation:
N/A
Permit #:
REV2021-00045
Status:
complete
Fee:
$148
Permit Type:
N/A
Building Type:
N/A
Re-wire single family dwelling (25 receptacles 11 fixtures 4 gfcis two exhaust fans one disposal one cooking appliance 5 smoke detectors and upgrade electrical meter to 200 amps
Valuation:
N/A
Permit #:
E22-000704
Status:
final
Fee:
$518
Permit Type:
Alterations
Building Type:
N/A
Replace (3) ceiling lights/fans (2) faucets [ (1) in kitchen and (1) in bathroom ] remove existing roofing materials and install new comparable shingles (25 sq)
Valuation:
N/A
Permit #:
B17-000306
Status:
issued
Fee:
$511
Permit Type:
Remodel or repair...
Building Type:
N/A
Addition of 240 sq ft to expand master bedroom suite kitchen & bedroom. also includes remodel family room by changing flat ceiling to a cathedral ceiling with decorative beams. raise hall ceiling height to 8 and coffered ceiling at foyer. new covered porches at front and rear. new skylight at remodeled master bathroom
Valuation:
$75,393
Permit #:
2002 049875 RS
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel portion of kitchen attach fdn to floor...work includes: strapping foundation to floor frameinstalling new fdn piers throughout under floor area replacing bedroom window relocating wall between kitchen and living room installing new furnace replacin waterheater and minor elect. work related to remodeling work. bb
Valuation:
$14,776
Permit #:
B95-000029
Status:
final
Fee:
$523
Permit Type:
N/A
Building Type:
N/A
Renew expired permit # 29810 for final only residential addition of 300 sq. ft. rumpus room
Valuation:
N/A
Permit #:
B22-001489
Status:
final
Fee:
$246
Permit Type:
Final only permit
Building Type:
N/A
386sf master bedroom addition; 97sf patio conversion into a family room; 368 sf remodel (master bathroom mudroom/laundry bathroom and walk-in pantry); includes the extension of the sliding glass door; change from posts to strong walls
Valuation:
N/A
Permit #:
PMT2020-02618
Status:
final
Fee:
$1,928
Permit Type:
N/A
Building Type:
N/A
Renew expired permit # b04614 for final only residential addition of 290 sq. ft
Valuation:
N/A
Permit #:
B22-001488
Status:
final
Fee:
$426
Permit Type:
Final only permit
Building Type:
N/A
Miscellaneous drywall patching on kitchen area and bedrooms
Valuation:
N/A
Permit #:
B22-001407
Status:
final
Fee:
$395
Permit Type:
Other
Building Type:
N/A
Replace 3 ceiling lights fan
Valuation:
N/A
Permit #:
E17-000168
Status:
issued
Fee:
$40
Permit Type:
Alterations
Building Type:
N/A
Demolish existing bay window at bedroom # 1 then addition a 218 sq ft bathroom and walk in closet in same area. alteration to existing wall at addition. all subtrades included
Valuation:
$16,324
Permit #:
2002 040653 RS
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace (2) faucets
Valuation:
N/A
Permit #:
P17-000129
Status:
issued
Fee:
$38
Permit Type:
Alterations
Building Type:
N/A
Pre alteration for structure fire - living quarters over garage caught fire
Valuation:
N/A
Permit #:
BLD21-004229
Status:
final
Fee:
N/A
Permit Type:
S-fam residential
Building Type:
N/A
Combo asfr: add/alt single family residence bldg: building
2017-06-22
To repair fire damage & temp power pole
Valuation:
$46,000
Permit #:
B17-00882
Status:
complete
Fee:
$2,311
Permit Type:
N/A
Building Type:
N/A
Fire damage
Valuation:
$0
Permit #:
O14-00009
Status:
ISSUED
Fee:
$213
Permit Type:
N/A
Building Type:
N/A
Remove plywood siding replace w/t1-11 drywall intt/o tar & gravel reroof w/tar & gravel on storage shed area
Valuation:
$5,100
Permit #:
B96-000886
Status:
final
Fee:
$153
Permit Type:
N/A
Building Type:
N/A
New detached one-car garage with electrical (replace fire damaged garage)
Valuation:
$7,776
Permit #:
13-2622
Status:
final
Fee:
N/A
Permit Type:
Asfr
Building Type:
N/A
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Verified License
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Cornerstone Restoration Inc License info
Verified License
| License # | 988469 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership, Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Cornerstone Restoration 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 # | 507346 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership, 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 Cornerstone Restoration Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Accredited Surety & Casualty Company Inc |
31
Permits
- Building permit records show that Cornerstone Restoration Inc has worked on 31 permitted projects.
Cornerstone Restoration Inc Employees
BD
Brian Steven Dunn
Officer
JP
John Stanley Poyser
Owner
SD
Saundra Jean Dunn
Rmo / Ceo / Pres