Updated: Nov 13, 2025
Location and Projects
Address
3456 ASHWOOD AVENUE, Los Angeles, CA, 90066
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Schierbeek Jefferson John Architect
Their BuildZoom score of 105 ranks in the top 8% of 336,931 California licensed contractors.
If you are thinking of hiring Schierbeek Jefferson John, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Schierbeek Jefferson John Services
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Schierbeek Jefferson John Contact Information
Phone Number: (310) 963-0563
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Address: 3456 ASHWOOD AVENUE, Los Angeles, CA 90066
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Schierbeek Jefferson John Los Angeles
Quality
105
92nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Schierbeek Jefferson John has a BuildZoom score of 105, which places them above 92% of 336,931 contractors in California.
Activity
|
6 projects
|
2025 |
|
5 projects
|
2024 |
|
5 projects
|
2023 |
Our building permit records indicate that Schierbeek Jefferson John has worked on at least
16.0 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
|
4 projects
|
Home Additions |
|
3 projects
|
New Constructions |
Analyzing permits over the last 4 years shows that Schierbeek Jefferson John mostly works on
home addition
and new construction
projects.
Pricing
|
4 projects
|
< $5k |
|
3 projects
|
$5k-$20k |
|
1 project
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
|
3 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
|
1 project
|
$1mil+ |
The typical size of their permits is approximately $35,000. 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.
Building Permits by Schierbeek Jefferson John
This is a sample of this contractor's permits. Click here to access their complete permit history.
*eplan.* convert detached recreation room w attached garage into adu w 2-story (n) addition. garage to remain. adu per lamc 12.22 a.33(c) and (d)
Valuation:
$150,000
Permit #:
24014-10000-04947
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Eplan new 2nd floor addition to (e) 2-story single family dwelling with attached garage and patio cover. with interior and exterior structrual remodel
Valuation:
$1,250,000
Permit #:
24014-10000-01833
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New detached 33'-5 1/2 x 13'-5 3/4 accessory dwelling unit per lamc 12.22 a.33(b)(1) and covered porch per engineer
Valuation:
$120,000
Permit #:
25010-10000-00078
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert (e) attach. garage to accessory dwelling unit per lamc 12.22 a.33(c) and (e) and new 9'-2 x 16'-6 addition to adu addition (n) 10'x24'-4 attach. one-car garage and 2 (n) additions (11'-9 1/2 x 19'-5 & 14 x 17'-6") at rear and remodel of (e) one-story single family dwelling
Valuation:
$125,000
Permit #:
21014-20000-05898
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to 21014 - 20000 - 05898 to revise the project to: addition of 20 6 x 6 6 to (e) garage. new 21 x 31 9 second story adu per lamc 12.22 a.33 (c) and (e). two new additions of 14 x 17 6 and 11 9 1/2 x 19 5 at rear and remodel of single family dwelling
Valuation:
$501
Permit #:
21014-20001-05898
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Eplan: supplemental to 25010-10000-00078 relocation on site to 4'-0 rear yard setback and remove eaves. no change in building dimensions
Valuation:
N/A
Permit #:
25010-10001-00078
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
2nd story addition of 22'-2 x 18.5 over the existing detached garage garage to make new accessory dwelling unit with attached garage per ab 494 and sb 229. work per engineering
Valuation:
$60,000
Permit #:
18014-20000-04763
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Emailed 11/27/24 att: mahnaz nourhashemi supp. to 24014-10000-01833 mudroom addition and design refinements
Valuation:
$85,000
Permit #:
24014-10001-01833
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to # 19014-30000-03229 to remove fire sprinkler from scope of work and structural inventory. no fee department error
Valuation:
N/A
Permit #:
19014-30001-03229
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New 2-story single family dwelling with 2 car garage. (see comments)
Valuation:
$550,000
Permit #:
16010-10000-02278
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Eplan: convert (e) recreation room to 1-story accessory dwelling unit per ca govt. code 65852.2(e)(1)(a)
Valuation:
$90,900
Permit #:
22016-10000-26705
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
15'6 x 57'6 (l-shaped) addition to rear of dwelling to expand kitchen and addition bedroom. convert (e) rec. room to study room and bedroom. convert bedroom to full bathroom. remove wall between living rm./kitchen to addition new beams. remodel kitchen. all work per engineering
Valuation:
$150,000
Permit #:
17014-20000-02905
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Window and door changeout to (e) single family dwelling. replace windows doors and relocate bathroom. create new opening with shear walls per wfpp
Valuation:
$35,000
Permit #:
23016-10000-22060
Status:
plancheck
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Eplan. new 2 story detached adu per lamc 12.22 a.33(c) and (d)
Valuation:
$120,000
Permit #:
24010-10000-01073
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert existing detached garage with 2 x 18 unpermitted addition built prior to january 1 2018 into a.d.u. per state law gcs 65852.23
Valuation:
$10,000
Permit #:
23016-10000-32235
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert existing single family dwelling to duplex and convert existing 400 sf rec-room in lower level to 400 sf adu per ordinance
Valuation:
$40,000
Permit #:
19016-30000-32192
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental to 16010-10000-02278 for the revision of elevation changes to comply with city planning approval. no fee. department error
Valuation:
N/A
Permit #:
16010-10002-02278
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert existing detached garage to accessory dwelling unit per ab494 and sb229
Valuation:
$25,000
Permit #:
18016-10000-18390
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Change of use from (e) single family dwelling to day care facility. day care facility. a facility in which non-residential care is provided for children 16 years of age or under when licensed as a day care facility for children by the state of california or other agency designated by the state under the categories defined in section 30019 of title 22 of the state of california adminis... see more
Valuation:
$15,000
Permit #:
18016-10000-20780
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Addition to (e) garage and addition 2nd story adu above garage
Valuation:
$125,000
Permit #:
19014-30000-06357
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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Schierbeek Jefferson John License info
License Not Verified
| License # | C22018 |
| Status | Active |
| State | California |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Schierbeek Jefferson John with the California Architect License Board
This is a sample of licensing data; click here to access a complete history.
105
BuildZoom Score
49
Permits
- Building permit records show that Schierbeek Jefferson John has worked on 49 permitted projects.
Schierbeek Jefferson John Employees
JS
Jefferson J. Schierbeek
SJ
Schierbeek Jefferson John
Owner