Updated: Jul 02, 2025
Location and Projects
Address
20371 Lake Forest Dr, Lake Forest, CA, 92630
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Sq 1 Construction Company Photos
Sq 1 Construction Company
We are a small General Contracting Company focused primarily on retail tenant improvements. We also do office renovations, demolition and site development projects. Our family has been in the construction business for almost 75 years. Sq. 1 construction, Inc. was established after the closing of Lindsley Construction Company, Inc. in March of 2019.
From BuildZoom:
Sq 1 Construction Company at 20371 Lake Forest Dr, Lake Forest, CA 92630, held a General Contractor license (#1055293) with the California contractors license board with an expiration date of 05-23-2025. We last verified the license was Expired on 07-02-2025.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 336,931 California contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
Sq 1 Construction Company Services
Start a project today:
Medium Multi-Family New Con...
Medium Multi-Family Remodel...
Office Renovation
Restaurant Renovation
Retail Renovation
Other Commercial Renovation
Pole Barn
Restaurant New Construction
Retail New Construction
Office Building New Constru...
Industrial New Construction
Hotel New Construction
Warehouse New Construction
Other Commercial New Constr...
Industrial Renovation
Hotel Renovation
Warehouse Renovation
ADU
Pool House
Sunrooms and Greenhouses
Other Secondary Structure N...
Large Multi-Family New Cons...
Large Multi-Family Remodel ...
Healthcare Facility New Con...
Healthcare Facility Renovation
Sq 1 Construction Company Contact Information
Phone Number: (949) 228-3182
Address: 20371 Lake Forest Dr, Lake Forest, CA 92630
Sq 1 Construction Company Lake Forest
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Sq 1 Construction Company, log in and update your license info in the “Edit Profile” tab.
Activity
|
3 projects
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Sq 1 Construction Company has worked on at least
4.0 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
|
Commercial Renovations |
Analyzing permits over the last 4 years shows that Sq 1 Construction Company mostly works on
commercial renovation
projects.
Pricing
|
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.
Building Permits by Sq 1 Construction Company
This is a sample of this contractor's permits. Click here to access their complete permit history.
<eplan> demolish office building parking lot to remain comply with department order effective date 01/11/2024. permit will expire 30 days from issuance date
Valuation:
$163,040
Permit #:
23019-20000-03586
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Landlord vanilla shell work and exterior facade remodel. demolition of existing storefront and entry canopy demolition of interior walls and fixtures. new facade remodel new storefront system new delivery rear exterior door. re-use of existing (3) 200 amp meters and adding (1) new 200 amp meter
Valuation:
N/A
Permit #:
PMT23-04685
Status:
final
Fee:
$2,046
Permit Type:
N/A
Building Type:
N/A
(e-plan) parking lot modifications to addition accessibility ramp. *pre-con meeting w inspector required before start of work. call 949-724-6329 to schedule*
Valuation:
$20,000
Permit #:
00907225-PLI
Status:
issued
Fee:
$312
Permit Type:
N/A
Building Type:
N/A
Remove all interior improvements and partial exterior facade demolish
Valuation:
N/A
Permit #:
PMT23-04680
Status:
final
Fee:
$345
Permit Type:
N/A
Building Type:
N/A
Extend 2 sewer line approx. 20 and corresponding hot and cold water pipeline 20 for adding 2 sinks
Valuation:
$3,000
Permit #:
COMBC-2020-00053
Status:
final
Fee:
$456
Permit Type:
N/A
Building Type:
N/A
(roll plans) tenant improvement. (3, 180 sf) to an existing vacant space to create new landlord's management office ("mgp management office suite #1"): include new accessible restrooms w/drywall ceiling new office wall partitions & wall framing; new t-bar ceiling; new wall & floor finishes. 1- dishwasher 2-lavs 1-sink 2- toilets 1-urinal 1-water heater; 77-rec 87-lights 15-switches 5-... see more
Valuation:
$450,000
Permit #:
COMB-05-20-40140
Status:
final
Fee:
N/A
Permit Type:
Tenant improvement
Building Type:
N/A
**change of contractor: ref plm16-00665** comm'l plumbing permit - 13, 120 sq ft new shell building 5 - gas systems 5 - water systems 3 - roof drains 5 - hose bibbs as per approved plans
Valuation:
N/A
Permit #:
PLMC-2019-0332
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
**change of contractor to sq 1 construction** comm'l plumbing permit - 13, 276 sq ft retail shell building 9 - gas systems 9 - water systems 3 - roof drains 5 - hose bibbs
Valuation:
N/A
Permit #:
PLMC-2019-0331
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
**change of contractor: ref plm17-00380** commercial plumbing permit - retail shell building (1) gas system (1) water system (4) roof drains (5) hose bibs per approved plans ref: bld17-00806
Valuation:
N/A
Permit #:
PLMC-2019-0330
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
**change of contractor: ref mec16-00234** comm'l mechanical permit - 13, 120 sq ft new shell building 6 - 4 ton units 4 - 5 ton units
Valuation:
N/A
Permit #:
MECC-2019-0129
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
**change of contractor to sq 1 construction** comm'l mechanical permit - 13, 276 sq ft retail shell building 8 - 5 ton air conditioning units 1 - 4 ton air conditioning unit as per approved plans
Valuation:
N/A
Permit #:
MECC-2019-0128
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
**change of contractor: ref mec17-00098** commercial mechanical permit - retail shell building (3) 7.5 tons air conditioning units (1) 10 ton air conditioning unit per approved plans ref: bld17-00806
Valuation:
N/A
Permit #:
MECC-2019-0127
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
**change of contractor: ref ele16-00753** comm'l electrical permit - 13, 120 sq ft new shell building 6 - outlets 2 - switches 26 - fixtures 1 - 1600 amp service main 3 - 400 amp sub panels 5 - 100 amp sub panels as per approved plans
Valuation:
N/A
Permit #:
ELEC-2019-0446
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
Comm'l electrical permit - 13, 276 sq ft retail shell building 15 - outlets 2 - switches 65 - fixtures (1) 2000 amp service main (8) 200 amp sub panels (2) 400 amp sub panels
Valuation:
N/A
Permit #:
ELEC-2019-0445
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
Change of contactor: ref ele17-00363 commercial electrical permit - shell retail building (15) outlets (2) switches (32) fixtures (1) 1200 amp service main (1) 200 amp sub panel (1) 620 amp sub panel per approved plans ref: bld17-00806
Valuation:
N/A
Permit #:
ELEC-2019-0444
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
**change of contractor: ref bld16-01422** comm'l building permit - new shell building - shops 1 for future retail shops - 13120 sq ft - type vb fire sprinklered as per approved plans
Valuation:
N/A
Permit #:
BLDC-2019-0763
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
**change of contractor: ref bld17-00482** comm'l building permit - 13, 276 sq ft retail shell building type v-b construction fire sprinklered m occupancy note: all future tenants to submit tenant improvement. drawings for separate review deferred submittals - fire sprinklers trusses signage as per approved plans
Valuation:
N/A
Permit #:
BLDC-2019-0762
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
Change of contractor: ref bld17-00806 commercial building permit - new 5, 650 sq ft retail shell building type vb construction type m occupancy per approved plans mechanical electrical and plumbing on separate submittals
Valuation:
N/A
Permit #:
BLDC-2019-0761
Status:
expired
Fee:
$22
Permit Type:
N/A
Building Type:
N/A
Sq 1 Construction Company Reviews
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Sq 1 Construction Company License info
Inactive License
| License # | 1055293 |
| Status | Inactive |
| State | California |
| Type | General Contractor |
| Class | B |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Sq 1 Construction Company at the California Contractors State 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 Sq 1 Construction Company, log in and update your license info in the “Edit Profile” tab.
Insured
| Insurer | First Insurance |
| Insured up to | $2,000,000 |
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Exempt |
8
Permits
- Building permit records show that Sq 1 Construction Company has worked on 8 permitted projects.