Updated: May 31, 2026
Location and Projects
Address
6117 MANTON AVENUE, Woodland Hills, CA, 91367
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3 at Once Construction
Serving the Woodland Hills area, 3 at Once Inc brings over three decades of experience to residential and commercial construction projects. The company manages new construction, remodels, and renovations for a range of property types. Based in Woodland Hills, 3 at Once Inc is positioned to work with clients throughout the San Fernando Valley and surrounding Los Angeles neighborhoods. With 31 years of industry expertise, the firm handles project coordination from initial planning through completion. Project examples include single-family home upgrades and commercial build-outs. The company’s services include everything from framing and structural work to interior finish installations. 3 at Once Inc emphasizes efficient project management to deliver construction solutions tailored to each client’s needs.
3 at Once Inc Services
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3 at Once Inc Contact Information
Phone Number: (818) 521-0361
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Address: 6117 MANTON AVENUE, Woodland Hills, CA 91367
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3 at Once Inc Woodland Hills
Quality
98
84th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
3 at Once Inc has a BuildZoom score of 98, which places them above 84% of 336,931 contractors in California.
Activity
|
2 projects
|
2024 |
Our building permit records indicate that 3 at Once Inc has worked on at least
2.0 projects over the past 2 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.
Pricing
|
1 project
|
< $5k |
|
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.
New irregular shaped 33 11 x 25 2 two story adu 1087 sqft (all electric). per lamc 12.22 a.33 (c)-(d). 1 of 2
Valuation:
$126,000
Permit #:
23010-20000-02060
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert (e) 19'-6 x 20'-0 attached garage to (n) accessory dwelling unit per ab 494 and sb 229. all work per wfpp
Valuation:
$20,000
Permit #:
18016-20000-35780
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Enclose 13'0 x 32'6 patio cover and convert to living room and laundry room
Valuation:
$35,500
Permit #:
18016-20000-37041
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Demolish (e) 360 sqft detached garage no sewer cap is required. no pedestrian fence is required. 2 of 2
Valuation:
$1,000
Permit #:
23019-20000-02003
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental to original permit #: 15014-20000-05749 to revise structural plans and change engineer of record
Valuation:
N/A
Permit #:
15014-20001-05749
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition 6'-6 x 7'-6 elevator shaft on the first floor and irregular 25'-
Valuation:
$125,000
Permit #:
15014-20000-05749
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert 2-car garage to a recreation room and storage with external access only. addition 6'11"x18'6 for half bathroom and wetbar area to the rec. room. all work per engr's details. (new carport is under permit # 14010-20k-03643)
Valuation:
$25,000
Permit #:
14014-20000-04496
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition 6'-6 x 7'-6 elevator shaft on the first floor and irregular 25'-6 x 33'-0 addition on the second floor to extend the (e) master bedroom/closets and 5'-10 x 13'-0 balcony interior remodel throughout. all work per engineering
Valuation:
$125,000
Permit #:
15014-20000-05749
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Interior non-structural tenant improvement in existing retail space (jewerly store): new ceiling millwork/casework finishes and glass partiion and door for security controlled egress per section 1008.1. 4.4.(interior only no exterior works )
Valuation:
N/A
Permit #:
11016-10000-25653
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental permit to pcis #10014-30000-03841...change in 2nd floor plan...change in location of windows...change in length and location of shearwalls...add location of kitchen addition from previous permit to site plan
Valuation:
N/A
Permit #:
10014-30002-03841
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Plumbing plan check and permit for pipe sizing in a single family dwelling. 1 meter no backflow protection. sized on 36.01 psi per 100 feet. 184/115 high/low psi per plan. 2 prvs 1 set at 125 to serve domestic prv and fire and one set at 80 to serve domestic only
Valuation:
N/A
Permit #:
07042-20000-22680
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Enclose 48 sf of patio and addition 5'x19'6 to attached garage. remove and replace 10 window and 4 doors at same location and size. tear off (e) roof shingle and replace with class a comparable shingle. 30 squares
Valuation:
N/A
Permit #:
10014-20000-04063
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
6'-3 x 15'-6 bathroom/closet addition to north. 5 x 11'-7 dining room extention to east. convert 7'-6 x 20 portion of (e)garage to office/nook. 6'8 x 20 garage extention to south
Valuation:
N/A
Permit #:
05014-20000-02772
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Construct new 16'-8 x 18 irr carport per engr's details
Valuation:
$5,000
Permit #:
14010-20000-03643
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to 11016-10000-25653 revise construction details for suspended ceiling system (usg donn larr #25764)
Valuation:
N/A
Permit #:
11016-10001-25653
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Kitchen remodel in (e) single family dwelling. remove bearing wall and replace with ceiling beam. addition bay window
Valuation:
N/A
Permit #:
12016-20000-22192
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition irregular shaped 8'-11 x 30'-10 to expand bedroom bathroom & addition closet to master bedroom. all works are per engineering
Valuation:
$31,000
Permit #:
17014-20000-01065
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert 2-car garage to a recreation room and storage with external air conditioning
Valuation:
$25,000
Permit #:
14014-20000-04496
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Kitchen/bathroom remodel for residential buildings (no structural changes). valuation to be verified by field inspector
Valuation:
N/A
Permit #:
08016-20000-11326
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Kitchen framing revision (new headers) per engineering calcs. bathroom remodel
Valuation:
N/A
Permit #:
10016-20000-22109
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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3 at Once Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
3 at Once Inc License info
Verified License
| License # | 847812 |
| 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 3 at Once Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
98
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
23
Permits
- Building permit records show that 3 at Once Inc has worked on 23 permitted projects.
3 at Once Inc Employees
AC
Ann Marie Charles
Officer
RC
Robert David Charles
Rmo/Ceo/Pres