Updated: May 28, 2026
Location and Projects
Address
4996 ALTA ST, Simi Valley, CA, 93063
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Milspec Builders Construction
Based in Simi Valley, Milspec Builders Inc serves clients throughout Ventura County and the greater Los Angeles area. The company undertakes a variety of residential construction projects, focusing on custom home building, room additions, and major remodels. Portfolio examples highlight full-scale kitchen and bathroom renovations, as well as ground-up construction for single-family homes. Milspec Builders works with homeowners looking to expand or upgrade their living spaces, guiding projects from initial design through completion. The firm emphasizes efficient project management by coordinating with architects, engineers, and local building authorities to ensure timely permit approvals and adherence to California building codes. With six years in operation, Milspec Builders brings experience in both interior and exterior upgrades, including structural framing, roofing, and finishing work tailored to each client's goals.
Milspec Builders Inc Services
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Milspec Builders Inc Contact Information
Phone Number: (805) 813-2600
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Address: 4996 ALTA ST, Simi Valley, CA 93063
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Milspec Builders Inc Simi Valley
Quality
101
88th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Milspec Builders Inc has a BuildZoom score of 101, which places them above 88% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
6 projects
|
2024 |
|
3 projects
|
2023 |
Our building permit records indicate that Milspec Builders Inc 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
|
3 projects
|
Home Additions |
|
3 projects
|
New Constructions |
Analyzing permits over the last 4 years shows that Milspec Builders Inc mostly works on
new construction
and home addition
projects.
Pricing
|
1 project
|
$20k-$50k |
|
3 projects
|
$50k-$100k |
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.
Proposed 28'-6 x 39-4 irregular shaped addition & remodel to (e) single family dwelling. all work per engineering
Valuation:
$100,000
Permit #:
21014-20000-04664
Status:
complete
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New 37'-7 x 25 detached accessory dwelling unit per gcs 65852.2(e)(1)(b) and lamc 12.22 a.33(c) (d) and (g)
Valuation:
$80,000
Permit #:
24010-20000-01352
Status:
complete
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Upgrade main service panel to 200 amp. also addition 125 amp main panel on 5249 ranchito ave to serve the adu at 5247 ranchito ave
Valuation:
N/A
Permit #:
23041-90000-03909
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
20'-6 x 21'-0 addition to (e) recroom and convert to (n) 764 sf accessory dwelling unit per lamc 12.22 a.33(c) and (d). all work per eng
Valuation:
$65,000
Permit #:
23014-20000-02485
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New 24 x 20 detached patio cover with 5'-5 x 11 pool bathroom and 16'-5 x 11'-2 attached open trellis
Valuation:
$26,000
Permit #:
24010-20000-01353
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Upgrade electrical panel to 200 and relocate to adu per dwp
Valuation:
N/A
Permit #:
24041-90000-23115
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Tenant improvement to create t
Valuation:
$108,706
Permit #:
21-1668/000 000 P 00
Status:
triage
Fee:
$1,900
Permit Type:
Research lab-indu...
Building Type:
Industrial park
Tenant improvement to create t
Valuation:
$108,706
Permit #:
21-1668/000 000 M 00
Status:
triage
Fee:
$1,900
Permit Type:
Research lab-indu...
Building Type:
Industrial park
Tenant improvement to create t
Valuation:
$108,706
Permit #:
21-1668/000 000 E 00
Status:
triage
Fee:
$1,900
Permit Type:
Research lab-indu...
Building Type:
Industrial park
Convert existing 483 sf garage with a 405 sf addition = 888sq.ft. into an adu
Valuation:
N/A
Permit #:
PMT23-02854
Status:
final
Fee:
$1,367
Permit Type:
N/A
Building Type:
N/A
Addition 15 x 16 attached patio cover to the rear of dwelling per city standard
Valuation:
$4,600
Permit #:
17014-20000-01222
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Garage conversion to adu with 404 sq.ft addition
Valuation:
N/A
Permit #:
PMT23-03834
Status:
final
Fee:
$1,367
Permit Type:
N/A
Building Type:
N/A
Tenant improvement to create t
Valuation:
$108,706
Permit #:
21-1668/000 000 B 00
Status:
triage
Fee:
$1,900
Permit Type:
Research lab-indu...
Building Type:
Industrial park
Install new sprinkler valve
Valuation:
N/A
Permit #:
24042-90000-09267
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New adu converting entire garage 400sq ft. with an addition of 404sq.ft. = 804sq.ft. adu. new porch. 2bedroom 1bathroom laundry room living room kitchen and dining room
Valuation:
N/A
Permit #:
PMT23-03766
Status:
final
Fee:
$1,367
Permit Type:
N/A
Building Type:
N/A
New adu - converting the entire existing garage 404sq.ft. with an addition of 404sq.ft total 808sq.ft. adu. 2bedroom 1bathroom with laundry room kitchen and living room
Valuation:
N/A
Permit #:
PMT23-03765
Status:
final
Fee:
$1,367
Permit Type:
N/A
Building Type:
N/A
New 28'-0 x 18'-11 detached accessory dwelling unit with porch per lamc 12.22 a.33 (c)-(d)
Valuation:
$60,000
Permit #:
22010-20000-01290
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition 15 x 16 attached patio cover to the rear of dwelling per city standard
Valuation:
$4,600
Permit #:
17014-20000-01222
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Tenant improvement to create testing laboratory
Valuation:
$108,706
Permit #:
2021-1668-P-0-0-0
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Tenant improvement to create testing laboratory
Valuation:
$108,706
Permit #:
2021-1668-M-0-0-0
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Milspec Builders Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
Milspec Builders Inc License info
Verified License
| License # | 1017487 |
| 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 Milspec Builders Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
101
BuildZoom Score
Bonded
| Bonded Agent | Hudson Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
13
Permits
- Building permit records show that Milspec Builders Inc has worked on 13 permitted projects.
Milspec Builders Inc Employees
SB
Stephen William Berry
Ceo / President
TL
Todd Flint Lehmann
Rmo