Updated: May 11, 2026
Location and Projects
Address
15 San Luis Obispo St, Ladera Ranch, CA, 92694
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Keystone Design Build Inc Photos
Keystone Design Build Construction
Keystone Design Build Inc, 15 San Luis Obispo St, Ladera Ranch, CA (Employee: Siamak Golbabaie) holds a General Building license according to the California license board.
Their BuildZoom score of 106 ranks in the top 7% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Keystone Design Build Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Keystone Design Build Inc Services
Start a project today:
Custom Home Build
New Home Construction
Medium Multi-Family New Con...
Other Residential New Const...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Medium Multi-Family Remodel...
Other Residential Remodel
Office Renovation
Restaurant Renovation
Retail Renovation
Other Commercial Renovation
Roofing
Hardwood Flooring
Carpets
Laminate Flooring
Other Flooring
Framing
Wood Fences
Backsplash and Countertops
Stonework
Tile Flooring
Other Stone and Tile
Drywall
Interior Plaster
Brick and Blockwork
Other Masonry
Foundations
Other Concrete
Demolition
Paving, Driveways, and Side...
Excavation and Grading
Other Site Work
Keystone Design Build Inc Contact Information
Phone Number: (949) 614-3900
Address: 15 San Luis Obispo St, Ladera Ranch, CA 92694
Keystone Design Build Inc Ladera Ranch
Quality
106
93rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Keystone Design Build Inc has a BuildZoom score of 106, which places them above 93% of 336,931 contractors in California.
Activity
|
2 projects
|
2024 |
Our building permit records indicate that Keystone Design Build Inc has worked on at least
2.0 projects over the past 2 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-$20k |
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 Keystone Design Build Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Wmsr-01: [new/replace] lights/outlets/switches | wmsr-04: [new/replace] plumbing fixtures | additional details: 2 sinks 2 faucets 1 toilet 1 shower faucet hot-mop 1 kitchen sink and faucet
Valuation:
N/A
Permit #:
00920785-WMSR
Status:
final
Fee:
$262
Permit Type:
N/A
Building Type:
N/A
Bathroom with laundry remodel: convert side-by-side washer/dryer to stack unit remove cabinets to addition shower and relocate sink to accommodate new shower per approved 8.5"x11 plan
Valuation:
$8,000
Permit #:
RBP-2020-4422
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
6 wall freestanding bbq w/sink pilasters and
Valuation:
$15,000
Permit #:
B18-0972
Status:
final
Fee:
$812
Permit Type:
Residential
Building Type:
N/A
Dining room addition
Valuation:
$2,507
Permit #:
00543940-RBPR
Status:
final
Fee:
$144
Permit Type:
N/A
Building Type:
N/A
New 420 sf pool and attached spa
Valuation:
$30,106
Permit #:
SW180132
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Kitchen and bathroom remodel: incld electrical and plumbing. replace (17) nail on windows - like for like. ***windows & doors must be installed in accordance with approved manufacturing instructions. manufacturing instructions must be on site max. shgc 35 & u-factor of 40 (if replacing up to 75 sf.); max shgc 25 & u-factor of 32 (if replacing more than 75 sf w/o 3rd party involved)***... see more
Valuation:
N/A
Permit #:
C2016-004805
Status:
final
Fee:
$1,288
Permit Type:
N/A
Building Type:
N/A
Newsfd with 4139 sq. ft. living area 801 sq. ft. garage and storage 333 sq ft covered outdoor area 200 sq.ft. balcony
Valuation:
$580,325
Permit #:
RS161664
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New custom 2 story sfd (5,620 sq ft.) with attached garage & storage (1,140 sq ft.), balcony (325 sq ft.), and covered patio (321.5 sq ft.)
Valuation:
$698,583
Permit #:
RS130839
Status:
Issued
Fee:
$9,273
Permit Type:
N/A
Building Type:
N/A
Permit to remove existing cedar shakes and install lightweight concrete tiles wolf grey color. tiles are less than 6 lb psf. field verify for code compliance
Valuation:
$8,000
Permit #:
B13-1971
Status:
FINALED
Fee:
$216
Permit Type:
Ralt
Building Type:
N/A
Garage remodel: raising roofline from shed roof to gable roof. electrical to redirect electrical wires
Valuation:
$8,456
Permit #:
RS170155
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Permit tor a kitchen remodel all like for like replacememt and (3) bathrooms being remodelled. field verify for code compliance
Valuation:
$15,000
Permit #:
B13-1958
Status:
ISSUED
Fee:
$662
Permit Type:
Ralt
Building Type:
N/A
Electrical for new custom sfd (5,620 sq ft.) with attached garage (1,140 sq ft.), balcony ( sq ft.), and covered patio ( sq ft.)
Valuation:
$0
Permit #:
EL130828
Status:
Issued
Fee:
$3,349
Permit Type:
N/A
Building Type:
N/A
Mechanical for new custom sfd (5,620 sq ft.) with attached garage (1,140 sq ft.), balcony ( sq ft.), and covered patio ( sq ft.)
Valuation:
$0
Permit #:
ME130455
Status:
Issued
Fee:
$2,202
Permit Type:
N/A
Building Type:
N/A
Plumbing for new custom sfd (5,620 sq ft.) with attached garage (1,140 sq ft.), balcony ( sq ft.), and covered patio ( sq ft.)
Valuation:
$0
Permit #:
PB130598
Status:
Issued
Fee:
$1,468
Permit Type:
N/A
Building Type:
N/A
Shahram salimy dds 1214 sf dentist office (b)
Valuation:
$300,000
Permit #:
X2010-2076
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Temporary power pole for new construction
Valuation:
N/A
Permit #:
EL170538
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New swimming pool w/attached spa (420)
Valuation:
$27,039
Permit #:
SW150057
Status:
Filed
Fee:
$324
Permit Type:
N/A
Building Type:
N/A
New precise grading for custom 2 story sfd with attached garage and swimming pool
Valuation:
$0
Permit #:
GB130067
Status:
Issued
Fee:
$10,015
Permit Type:
N/A
Building Type:
N/A
Bathroom remodel: light fixtures faucets plumbing tile hot mop tub to shower. subject to field inspector per ray luna
Valuation:
$3,000
Permit #:
00537326-RBPR
Status:
final
Fee:
$226
Permit Type:
N/A
Building Type:
N/A
3 bathroom remodels (no relocation of fixtures)
Valuation:
$4,000
Permit #:
B11-0894
Status:
final
Fee:
$314
Permit Type:
Add/alt
Building Type:
N/A
Keystone Design Build Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
Keystone Design Build Inc License info
Verified License
| License # | 951443 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Keystone Design Build Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
106
BuildZoom Score
Bonded
| Bonded Agent | Wesco Insurance Company |
| Bond Value | $15,000 |
18
Permits
- Building permit records show that Keystone Design Build Inc has worked on 18 permitted projects.
Keystone Design Build Inc Employees
SG
Siamak Golbabaie
Rmo/Ceo/Pres