Updated: Jul 28, 2026
Location and Projects
Address
5235 MT BLANCA DR, San Diego, CA, 92111
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Cornerstone Home Improvements
Serving the San Diego area for over three decades, Cornerstone Home Improvements specializes in home remodeling and renovation projects. The company’s portfolio includes kitchen and bathroom remodels, room additions, and exterior upgrades for homeowners across the region. With 36 years of experience in the building and remodeling industry, Cornerstone Home Improvements manages projects from initial design consultation through construction and final inspection. The team collaborates closely with clients to update residential properties, often handling projects that involve custom cabinetry, tile installation, and whole-home renovations. Based in San Diego, their service area encompasses surrounding neighborhoods and nearby cities. Cornerstone Home Improvements works primarily with residential homeowners seeking to modernize or expand their living spaces with tailored upgrades and structural improvements.
Cornerstone Home Improvements Services
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Cornerstone Home Improvements Contact Information
Phone Number: (619) 384-9034
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Address: 5235 MT BLANCA DR, San Diego, CA 92111
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Cornerstone Home Improvements San Diego
Quality
101
88th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Cornerstone Home Improvements has a BuildZoom score of 101, which places them above 88% of 336,931 contractors in California.
Activity
|
1 project
|
2024 |
|
4 projects
|
2023 |
Our building permit records indicate that Cornerstone Home Improvements has worked on at least
5.0 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.
Pricing
|
1 project
|
$250k-$500k |
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 Home Improvements
This is a sample of this contractor's permits. Click here to access their complete permit history.
Phase 1 of 2: adding 20 sqft box bay to front of home. to include remodel to the kitchen living room and powder bathroom per plans (see bisub22-004230 for phase 2)
Valuation:
$350,000
Permit #:
BIAD23-000851
Status:
issued
Fee:
$12,428
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel removing 30 section of non load bearing wall replace cabinets and counters in the same footprint. move some electrical addition 6 can lights and eliminate 2 run loop vent for kitchen sink in island tile existing fireplace facade
Valuation:
$105,000
Permit #:
BIAL22-007432
Status:
final
Fee:
$3,362
Permit Type:
N/A
Building Type:
N/A
Replace 2 fireplace inserts in family room & living room eliminate 1 window in m. bathroom & remodel like for like remodel guest & pool baths like for like. new lights & exhaust fans in all bathroom rooms. per applicant work to be done concurrently
Valuation:
N/A
Permit #:
BIAL20-000469
Status:
final
Fee:
$2,617
Permit Type:
N/A
Building Type:
N/A
Convert existing attached garage into family room remodel kitchen and guest bathroom replace damaged framing and roof at area of conversion. also replumbing master bathroom and install tankless water heater
Valuation:
N/A
Permit #:
BIAD20-005423
Status:
final
Fee:
$3,203
Permit Type:
N/A
Building Type:
N/A
Kitchen/master bathroom remodel w pem/replace 3 windows/1 patio door
Valuation:
$125,000
Permit #:
B21-015867
Status:
final
Fee:
$2,926
Permit Type:
N/A
Building Type:
N/A
Guest bathroom remodel: no structural work like for like changes. demolish existing tub/shower vanity toilet and door. install new tub mixing valve vanity toilet tile wall-surround vanity light mirror & door
Valuation:
$11,000
Permit #:
B194552
Status:
final
Fee:
$523
Permit Type:
N/A
Building Type:
N/A
Master bathroom remodel - remove and replace - tub and fixtures to opposite side shower tile surround and pan shower fixtures glass enclosure double vanity toilet fan lights. remove and replace window with smaller. remove and replace subpanel in laundry room. install heated mat under tile floor
Valuation:
N/A
Permit #:
BIAL18-001902
Status:
final
Fee:
$1,727
Permit Type:
N/A
Building Type:
N/A
Master bath remodel: demo bath except tub, move shower drain, extend shower pan, & build bench, install (3) led can lights, new vent fan/lights, new vanity/counter, add (2) gfci outlets, & tile shower wall surround. no structural work.
Valuation:
$35,000
Permit #:
B180307
Status:
final
Fee:
$781
Permit Type:
N/A
Building Type:
N/A
No-plan - residential - combination mech/elec/plum:4340/georgia
Valuation:
N/A
Permit #:
PMT-3297553
Status:
complete
Fee:
$242
Permit Type:
N/A
Building Type:
N/A
Replace 22 existing windws all same size replace 1 bedroom window enlarging it to meet egress replace 1 patio door replace siding and trim where needed from dry rot
Valuation:
N/A
Permit #:
BIAL19-004049
Status:
final
Fee:
$1,208
Permit Type:
N/A
Building Type:
N/A
Replace master bedroom fireplace unit with new gas fireplace unit with vent. hearth will be removed and surround will be refinished
Valuation:
N/A
Permit #:
BIAL20-005747
Status:
final
Fee:
$620
Permit Type:
N/A
Building Type:
N/A
No-plan - residential - combination mech/elec/plum:2725/luna
Valuation:
N/A
Permit #:
PMT-3250938
Status:
complete
Fee:
$424
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel with new appliances cabinets baywindow and flooring
Valuation:
N/A
Permit #:
BIAL20-008855
Status:
final
Fee:
$3,220
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel by relocating electric stove new receptacles new cabinets and led lights/under cabinet lighting
Valuation:
$42,000
Permit #:
B19-1746
Status:
final
Fee:
$448
Permit Type:
N/A
Building Type:
N/A
Building new construction additions alterations or sign
2019-07-17
Addition 1/2 bath; remodel existing full bathroom
Valuation:
$49,000
Permit #:
B190361
Status:
final
Fee:
$3,339
Permit Type:
Alteration
Building Type:
N/A
No-plan - nonresidential/multifamily - electrical:5111/towle
Valuation:
N/A
Permit #:
PMT-3248761
Status:
complete
Fee:
$3,994
Permit Type:
N/A
Building Type:
N/A
No-plan - nonresidential/multifamily - electrical:5101/towle
Valuation:
N/A
Permit #:
PMT-3248757
Status:
complete
Fee:
$3,994
Permit Type:
N/A
Building Type:
N/A
Building new construction additions alterations or sign
2019-09-27
Kitchen remodel
Valuation:
$15,000
Permit #:
B191415
Status:
final
Fee:
$1,092
Permit Type:
Alteration
Building Type:
N/A
Remodel hall bathroom w/pe
Valuation:
$28,000
Permit #:
B18-012793
Status:
final
Fee:
$670
Permit Type:
N/A
Building Type:
N/A
Revision to b181842 replace sub panel
Valuation:
$1,200
Permit #:
R18527
Status:
triage
Fee:
$112
Permit Type:
N/A
Building Type:
N/A
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Cornerstone Home Improvements License info
Verified License
| License # | 896404 |
| 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 Home Improvements at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 726722 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership, Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Cornerstone Home Improvements at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 896404 |
| Status | Inactive |
| City | Oceanside |
| Type | Contractor |
| Business Type | Sole Ownership, Corporation |
- According to the City of Oceanside, CA, 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 Home Improvements at the City of Oceanside, CA.
This is a sample of licensing data; click here to access a complete history.
101
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Mid Century Insurance Company |
66
Permits
- Building permit records show that Cornerstone Home Improvements has worked on 66 permitted projects.
Cornerstone Home Improvements Employees
CH
Carlota Hernandez
Officer
CH
Carlota Hernandez
Officer
JD
John Anthony Douglas
Rmo / Ceo / Pres
SH
Silvestre Hernandez
Sole Owner
SH
Silvestre Hernandez
Owner