Updated: May 28, 2026
Location and Projects
Address
8633 Knott Ave, Buena Park, CA, 90620
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CSL Builders Construction
We are a design build firm that focus on bringing the concepts of owners designs to life. Our goal is always to maintain
our budget and bring the best value to our clients. Please Call us if any questions. Phone: 714.576.4868, Email: [email protected], visit us at www.csl-builders.com
From BuildZoom: CSL Builders, 8633 Knott Ave, Buena Park, CA (Employee: Chsung Say Lam) 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 CSL Builders, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
CSL Builders 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
CSL Builders Contact Information
Phone Number: (714) 576-4868
Address: 8633 Knott Ave, Buena Park, CA 90620
CSL Builders Buena Park
Quality
106
93rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
CSL Builders has a BuildZoom score of 106, which places them above 93% of 336,931 contractors in California.
Activity
|
2 projects
|
2025 |
|
5 projects
|
2024 |
|
4 projects
|
2023 |
Our building permit records indicate that CSL Builders has worked on at least
11.0 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
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that CSL Builders mostly works on
kitchen remodel
projects.
Pricing
|
2 projects
|
$50k-$100k |
|
1 project
|
$100k-$250k |
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.
Convert an (e) 363 det. garage and addition 304 sq ft to create a 667 sq ft adu:kitchen living room dining room one bed- room 3/4 bathroom laundry area w/hookups. 37 sq ft porch
Valuation:
$91,212
Permit #:
2211030012
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Standard plan under the pre-approved adu plans program detached 700sqft adu with 42sqft front porch
Valuation:
$129,739
Permit #:
BLD-24-01853
Status:
filed
Fee:
$2,312
Permit Type:
N/A
Building Type:
N/A
Cup 210119 landscape architect's plans for morningstar village at the intersection of hwy 79 and pourroy road
Valuation:
N/A
Permit #:
OASUB2500332
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Encroachment permit - driveway construction (w/o agreement)
2023-06-30
Construction of 2 driveway approaches per city standard 121-1 as shown on grading permit gra-2022-0014. coordinate with city inspector pete acosta at 714-738-6871 for a preconstruction meeting prior to any work being done. failure to hold a preconstruction meeting may result in removal or modification to new improvements at applicants expense. the city inspector may provide additional... see more
Valuation:
N/A
Permit #:
ENG-2023-0431
Status:
expired
Fee:
$425
Permit Type:
N/A
Building Type:
N/A
Haul route for grading. haul route shall be done per city of fullerton approved truck routes. see attached map. valencia mesa west bound bastanchury malvern gilbert commonwealth magnolia to city limits. working hours 8:30am -3:30pm please contact the city inspector peter acosta at 714-732-9060 for a pre-construction meeting prior to any work being performed. failure to hold a pre-cons... see more
Valuation:
N/A
Permit #:
ENG-2023-0429
Status:
expired
Fee:
$2,225
Permit Type:
N/A
Building Type:
N/A
735 detached adu to be preapproved. 2 bedrooms 1 bathroom 1 kitchen. new mini split hvac tankless water heater
Valuation:
N/A
Permit #:
BLD-24-01922
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Before any work is to begin contractor must schedule a preconstruction meeting with the water inspector elias capelle 657-248-5141 for all parts and location approval. * upon completion of the preconstruction meeting additional work/parts may need to be added to the permit per water inspector’s evaluation of existing meter assembly. install a 1 rfm per city standard 601. return old me... see more
Valuation:
N/A
Permit #:
WAT-2022-0077
Status:
expired
Fee:
$267
Permit Type:
N/A
Building Type:
N/A
Addition 679 sf to convert (e) garage to (n) 679 sf adu ***2 bed & 1 bath*** ***same plans as c2024-007045***
Valuation:
N/A
Permit #:
C2024-007164
Status:
issued
Fee:
$4,470
Permit Type:
N/A
Building Type:
N/A
New 742 sq ft detached adu: kitchen living room dining room two bedrooms two 3/4 bathrooms laundry area with hookups. 80 sq ft porch
Valuation:
$102,622
Permit #:
2210270017
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Retaining wall plan for morningstar village (cup 210119)
Valuation:
N/A
Permit #:
OASUB2500314
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New 2-story sfd: 4 bedrooms 3.5 bathrooms with attached 2-car garage + attached 1-car garage patio #1 & patio #2
Valuation:
$577,283
Permit #:
B17-35175
Status:
final
Fee:
N/A
Permit Type:
Nr new residential
Building Type:
N/A
Garage conversion to adu (352 sqft) unit d
Valuation:
N/A
Permit #:
210967
Status:
issued
Fee:
$558
Permit Type:
N/A
Building Type:
N/A
Garage conversion to adu (352 sqft) unit d
Valuation:
N/A
Permit #:
210966
Status:
issued
Fee:
$404
Permit Type:
N/A
Building Type:
N/A
Garage conversion to adu (352 sqft) unit d
Valuation:
N/A
Permit #:
210965
Status:
issued
Fee:
$344
Permit Type:
N/A
Building Type:
N/A
Garage conversion to adu (352 sqft) unit d
Valuation:
N/A
Permit #:
210964
Status:
issued
Fee:
$339
Permit Type:
N/A
Building Type:
N/A
Proposed food mart gas station and car wash per cup 210119
Valuation:
N/A
Permit #:
OALS2500076
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Morningstar village - rough grading for gas station with food mart and car wash
Valuation:
N/A
Permit #:
BGR2400143
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Nstall (n) temp power pole for construction from 12/15/2022- 9/15/2023
Valuation:
N/A
Permit #:
E2022-008780
Status:
final
Fee:
$144
Permit Type:
N/A
Building Type:
N/A
Plumbing for adu tankless water heater
Valuation:
N/A
Permit #:
2302020015
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrical for adu. 135 amp sub panel. **revised 2/22/23
Valuation:
N/A
Permit #:
2206220005
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
CSL Builders Reviews
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CSL Builders License info
Verified License
| License # | 982802 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership, Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for CSL Builders 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 | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
36
Permits
- Building permit records show that CSL Builders has worked on 36 permitted projects.
CSL Builders Employees
CL
Chsung Say Lam
Rmo / Ceo / Pres