Location and Projects
Address
2961 W Macarthur Blvd, Santa Ana, CA, 92704
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Keystone DCS Engineer
Keystone DCS Inc, 2961 W Macarthur Blvd, Santa Ana, CA (Employees: Adam Phuong Pham, David Dai Nguyen, and Loan Phuong Nguyen) holds a General Building, General Engineering license according to the California license board.
Their BuildZoom score of 110 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Keystone DCS Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Keystone DCS Inc Services
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Custom Home Build
New Home Construction
Medium Multi-Family New Con...
Other Residential New Const...
Restaurant New Construction
Retail New Construction
Office Building New Constru...
Industrial New Construction
Hotel New Construction
Warehouse New Construction
Other Commercial New Constr...
Small Multi-Family New Cons...
Modular Home Construction
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Keystone DCS Inc Contact Information
Phone Number: (714) 791-3771
Address: 2961 W Macarthur Blvd, Santa Ana, CA 92704
Keystone DCS Inc Santa Ana
Quality
110
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Keystone DCS Inc has a BuildZoom score of 110, which places them above 96% of 336,931 contractors in California.
Activity
|
6 projects
|
2025 |
|
14 projects
|
2024 |
|
21 projects
|
2023 |
Our building permit records indicate that Keystone DCS Inc has worked on at least
41.0 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
|
11 projects
|
New Constructions |
|
4 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that Keystone DCS Inc mostly works on
new construction
and home addition
projects.
Pricing
|
2 projects
|
< $5k |
|
4 projects
|
$5k-$20k |
|
1 project
|
$50k-$100k |
|
5 projects
|
$500k-$1mil |
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.
Install (3) curb drains remove/replace sidewalk as needed (xr2022-2633)
Valuation:
$600,000
Permit #:
N2025-0260
Status:
final
Fee:
$663
Permit Type:
N/A
Building Type:
N/A
Delta 1 - floor layout changes added floor vents lowered foundation revised guardrail roof material substitution addition hvac closet
Valuation:
$600,000
Permit #:
REV2023-1040
Status:
approved
Fee:
$613
Permit Type:
N/A
Building Type:
N/A
Delta 4 revision to remove int planter wall at front yard and alter interior space and window for jadu
Valuation:
$600,000
Permit #:
REV2024-0717
Status:
approved
Fee:
$211
Permit Type:
N/A
Building Type:
N/A
New 3-story (6) unit apartments (15, 000 sf) w/m/e/p's and solar(sp19-2/v-19-1)unit 1 - studio 1 bathroom 654 sfunit 2 - 2 beds 2 baths 1156 sf porch 54 sf balcony 60 sfunit 3 - 2 beds 2 baths 1173 sf porch 54 sfunit 4 - 2 beds 2 baths 1302 sf porch 78 sf balcony 64 sfunit 5 - 2 beds 2 baths 1156 sf porch 54 sf balcony 60 sfunit 6 - 2 beds 2 baths 1173 sf porch 54 sfcarports 1 ada 10 ... see more
Valuation:
$1,761,000
Permit #:
B-20-570
Status:
issued
Fee:
$12,942
Permit Type:
N/A
Building Type:
N/A
Delta 3 revision to addition gas furnace. change guardrail to pickets and roofing material
Valuation:
$600,000
Permit #:
REV2023-0990
Status:
approved
Fee:
$141
Permit Type:
N/A
Building Type:
N/A
8218 - 8242 garden grove blvd - landscape 12, 473 sf and hardscape 39, 168
Valuation:
$500,000
Permit #:
24-0059
Status:
final
Fee:
$6,453
Permit Type:
N/A
Building Type:
N/A
New 2-story sfd: 5 087 sf (living) 682 sf (garage) 133 sf (covered porch);246 sf (california room) 246 sf (deck); total = 5 bedrooms & 5 bathrooms. ***model 3a (3a-s-m); lebard tract 17801-10****(phase 5) entered by: woom
Valuation:
N/A
Permit #:
C2017-007611
Status:
final
Fee:
$17,592
Permit Type:
N/A
Building Type:
N/A
Delta 5 omit planter at front yard on grading plans to match arch plans
Valuation:
$600,000
Permit #:
REV2024-1305
Status:
applied
Fee:
$144
Permit Type:
N/A
Building Type:
N/A
Delta 2 revision: elevation & outdoor & electrical panel relocation
Valuation:
$600,000
Permit #:
REV2023-0244
Status:
approved
Fee:
$77
Permit Type:
N/A
Building Type:
N/A
New 2-story sfd: 6 623 sf (living) 707 sf (garage) 413 sf (balcony) 67 sf (covered porch); total = 5 bedrooms & 5.5 bathrooms. ***model1 (1a); lebard tract 17801-13***(phase 6) entered by: woom
Valuation:
N/A
Permit #:
C2017-007570
Status:
final
Fee:
$31,500
Permit Type:
N/A
Building Type:
N/A
Install (2) curb drains per city standard 184 and replace sidewalk along property frontage per city standard 180
Valuation:
N/A
Permit #:
N2025-0212
Status:
final
Fee:
$663
Permit Type:
N/A
Building Type:
N/A
Remove (e) non-structural store front soffit remove existing parapet on front facades addition new parapet and composite roof to match existing addition new stucco to existing block walls on front and side facades and addition soffit lights. this project scope includes building b (liquor store) and building c (restaurant) only. 2022 cbc occ: b type vb
Valuation:
$100,000
Permit #:
23-1333
Status:
final
Fee:
$2,387
Permit Type:
N/A
Building Type:
N/A
New single family residence w attached garage 2006/385 sf & attached junior accessory dwelling unit 327 sf
Valuation:
$600,000
Permit #:
X2022-0764
Status:
final
Fee:
$11,984
Permit Type:
N/A
Building Type:
N/A
New single family residence w attached garage 2006/385 sf & attached junior accessory dwelling unit 327 sf
Valuation:
$600,000
Permit #:
0679-2022
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install curb access ramp new sidewalk standard carriage walk & (2) curb drains (x2020-2629)
Valuation:
$665,000
Permit #:
N2023-0483
Status:
final
Fee:
$850
Permit Type:
N/A
Building Type:
N/A
New 2-story sfd: 4 526 sf (living) 458 sf (garage) 48 sf (covered porch); total = 4 bedrooms & 4.5 bathrooms. ***model 2 (2-r-m); lebard tract 17801-9****(phase 6) entered by: woom
Valuation:
N/A
Permit #:
C2017-007604
Status:
final
Fee:
$17,344
Permit Type:
N/A
Building Type:
N/A
New 2-story sfd: 5 477 sf (living) 728 sf (garage) 15 sf (covered porch); total = 5 bedrooms & 5.5 bathrooms. ***model1 (1b); lebard tract 17801-6***(phase 3) ***as-build***
Valuation:
N/A
Permit #:
C2017-007585
Status:
final
Fee:
$21,995
Permit Type:
N/A
Building Type:
N/A
Delta 4- fireplace substitution (3) hvac model info provided and substituted
Valuation:
$600,000
Permit #:
REV2023-1375
Status:
approved
Fee:
$261
Permit Type:
N/A
Building Type:
N/A
Single family residence delta 3 change of engineer & architect of record & change 1st & 2nd fl layout raise (e) flat roof 1'-9 increase roof deck 138 sf
Valuation:
$240,000
Permit #:
X2021-0823
Status:
expired
Fee:
$5,332
Permit Type:
N/A
Building Type:
N/A
Delta 2- step removal @ the roof deck and struc detail change
Valuation:
$600,000
Permit #:
REV2023-1895
Status:
approved
Fee:
$203
Permit Type:
N/A
Building Type:
N/A
Keystone DCS Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Keystone DCS Inc License info
Verified License
| License # | 1013293 |
| Status | Active |
| State | California |
| Type | General Building, General Engineering |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Keystone DCS Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
110
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
60
Permits
- Building permit records show that Keystone DCS Inc has worked on 60 permitted projects.
Keystone DCS Inc Employees
AP
Adam Phuong Pham
Rmo
DN
David Dai Nguyen
Ceo / President
LN
Loan Phuong Nguyen
Officer