Updated: Dec 15, 2025
Location and Projects
Address
31368 VIA COLINAS #105, Westlake Village, CA, 91362
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Althaus Andrew Ernst Architect
Their BuildZoom score of 0 does not rank in the top 50% of California contractors.
If you are thinking of hiring Althaus Andrew Ernst, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Althaus Andrew Ernst Services
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Althaus Andrew Ernst Contact Information
Address: 31368 VIA COLINAS #105, Westlake Village, CA 91362
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Althaus Andrew Ernst Westlake Village
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Althaus Andrew Ernst, click “This is My Business” to update your information.
Activity
|
10 projects
|
2025 |
|
8 projects
|
2024 |
|
5 projects
|
2023 |
Our building permit records indicate that Althaus Andrew Ernst has worked on at least
23.0 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
|
6 projects
|
Home Additions |
|
5 projects
|
Commercial Renovations |
Analyzing permits over the last 4 years shows that Althaus Andrew Ernst mostly works on
home addition
and commercial renovation
projects.
Pricing
|
4 projects
|
< $5k |
|
4 projects
|
$5k-$20k |
|
1 project
|
$20k-$50k |
|
4 projects
|
$50k-$100k |
|
5 projects
|
$100k-$250k |
|
2 projects
|
$250k-$500k |
The typical size of their permits is approximately $75,000. This graph shows the distribution of these job values.
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.
Addition & remodel to (e) single family dwelling
Valuation:
$150,000
Permit #:
24014-20000-05690
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(n) support structure for for a video projection screen pole sign. see comments
Valuation:
$85,000
Permit #:
24020-20000-02264
Status:
final
Fee:
N/A
Permit Type:
Onsite
Building Type:
N/A
Proposed addition and remodel to (e) single family dwelling. addition new attached patio cover
Valuation:
$250,000
Permit #:
23014-20000-02541
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Remodel of (e) single family dwelling to renovate the (e) kitchen and bathrooms change out windows and doors. work done per engineer design
Valuation:
$55,000
Permit #:
23016-20000-43249
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Commercial/industrial building permit
2023-02-09
New tenant improvement (ogara) dealership remodel and renovation to meet ci requiring mod of structural removing 2-3 interior columns. interior remodel of bentley and rolls royce showrooms. no chg in use
Valuation:
N/A
Permit #:
BLD-2023-07577
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Proposed addiitons and remodel to (e) single family dwelling and for a new 2-car garage. addition 12'-4 x 35'-2 for (n) accessory dwelling unit per lamc 12.22 a.33(c) and (e). all work per engineering
Valuation:
$250,000
Permit #:
23014-20000-01159
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Single story addition ground floor: dining kitchen breakfast nook remodel rear of residence 91 sf addition new bifolding door & windows. second floor: master suite remodel sitting room with addl master closet 91 sf addition new windows and addl roofing to match existing. (total 182 sf addition) *** revision 5/31/23 *** door and window changes demolish pantry under stairs and structura... see more
Valuation:
N/A
Permit #:
BLD-2022-07027
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Plumbing permit - single story addition ground floor: dining kitchen breakfast nook remodel rear of residence 91 sf addition new bifolding door & windows. second floor: master suite remodel sitting room with addl master closet 91 sf addition new windows and addl roofing to match existing. (total 182 sf addition) planning- sgb approval is to allow the construction of a single story add... see more
Valuation:
N/A
Permit #:
PLM-2022-00102
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical permit - single story addition ground floor: dining kitchen breakfast nook remodel rear of residence 91 sf addition new bifolding door & windows. second floor: master suite remodel sitting room with addl master closet 91 sf addition new windows and addl roofing to match existing. (total 182 sf addition) planning- sgb approval is to allow the construction of a single story a... see more
Valuation:
N/A
Permit #:
MEC-2022-000931
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrical permit - single story addition ground floor: dining kitchen breakfast nook remodel rear of residence 91 sf addition new bifolding door & windows. second floor: master suite remodel sitting room with addl master closet 91 sf addition new windows and addl roofing to match existing. (total 182 sf addition) planning- sgb approval is to allow the construction of a single story a... see more
Valuation:
N/A
Permit #:
ELE-2022-00148
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Tenant improvement to (e) warehouse to extend partition wall
Valuation:
$20,000
Permit #:
24016-20000-40703
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental to permit# 23014-20000-02541 to revise the area of the patio cover and revise the residential floor area and inventory accordingly
Valuation:
$501
Permit #:
23014-20002-02541
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert (e) detached garage to new detached accessory dwelling unit per lamc 12.22 a.33(c) and (d). work done per engineer design
Valuation:
$18,000
Permit #:
24016-20000-06719
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New 41'-8 x 18'-3 two-story irregular shaped detached accessory dwelling unit with attached storage workshop per lamc 12.22 a.33 (c) and (d). work per engineer
Valuation:
$130,000
Permit #:
21010-20000-02666
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Exterior plaza improvement including new finishes on existing hardscape elements replacement of existing water feature and demolish of existing wood trellis fountain and hardscape
Valuation:
$10,000
Permit #:
2022-5015-B-0-0-0
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install (new) safety parapet wall around perimeter of (e) rooftop (no change in building height)
Valuation:
$75,000
Permit #:
22016-10000-17909
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Single-family residential combination building permit
2025-10-09
(b e review req'd) (e-plan) installation of (4) solar street light poles
Valuation:
$8,000
Permit #:
CMB-2025-00415
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Supplemental permit to 23014-20000-01159 to revise framing and foundation plans. revise use code
Valuation:
$501
Permit #:
23014-20001-01159
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Interior remodelto existing single family dwelling - per engineer
Valuation:
$36,000
Permit #:
23016-20000-44221
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New (72'-0"x 17'-9") detached prefabricated metal covered canopy for vacuum carwash building. work per engineer
Valuation:
$110,000
Permit #:
20010-20000-04425
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
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Althaus Andrew Ernst License info
License Not Verified
| License # | C25002 |
| Status | Active |
| State | California |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of November, 2025. Check the current license status of Althaus Andrew Ernst with the California Architect License Board
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
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- *No active license on file. If you are Althaus Andrew Ernst, click “This is My Business” to update your information.
24
Permits
- Building permit records show that Althaus Andrew Ernst has worked on 24 permitted projects.
Althaus Andrew Ernst Employees
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Althaus Andrew Ernst
Owner