Updated: Mar 05, 2026
Location and Projects
Address
1351 N PLACER AVENUE, Ontario, CA, 91764
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Exacto Builders Construction
Serving Ontario, California and the surrounding Inland Empire, Exacto Builders specializes in a wide range of residential and commercial construction projects. With 31 years of experience, the company is equipped to handle new construction, remodeling, and additions for both homes and businesses. Exacto Builders manages every phase of construction, from initial planning through completion. The team works on projects such as kitchen and bathroom remodels, room additions, and tenant improvements. Exacto Builders serves property owners seeking upgrades, repairs, and full-scale build-outs for residential properties and commercial spaces. The company applies established building methods and adheres to local codes to deliver structurally sound and functional results for every project.
Exacto Builders Services
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Exacto Builders Contact Information
Phone Number: (951) 990-3932
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Address: 1351 N PLACER AVENUE, Ontario, CA 91764
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Exacto Builders Ontario
Quality
96
80th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Exacto Builders has a BuildZoom score of 96, which places them above 80% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
Our building permit records indicate that Exacto Builders has worked on at least
1.0 project over the past year.
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 |
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 closet to laundry room
Valuation:
$4,000
Permit #:
B00-031-715
Status:
issued
Fee:
$244
Permit Type:
Dwellings
Building Type:
N/A
Convert closet to laundry room. building 518 unit #208
Valuation:
$2,500
Permit #:
B00-030-188
Status:
issued
Fee:
$158
Permit Type:
Apartment house
Building Type:
N/A
Legalize kitchen and bathroom remodel and legalize windows installation (6) installation of windows shall comply with title 24 building efficiency standards
Valuation:
N/A
Permit #:
B18-000099
Status:
issued
Fee:
$1,015
Permit Type:
Legalization of s...
Building Type:
N/A
Convert closet to laundry room. unit#206
Valuation:
$2,500
Permit #:
B00-030-423
Status:
final
Fee:
$221
Permit Type:
Dwellings
Building Type:
N/A
Convert closet to laundry room. no structural changes just adding plumbing
Valuation:
$2,000
Permit #:
B00-035-186
Status:
issued
Fee:
$197
Permit Type:
Dwellings
Building Type:
N/A
Convert closet to laundry room unit #101
Valuation:
$4,000
Permit #:
B00-029-215
Status:
final
Fee:
$192
Permit Type:
Apartment house
Building Type:
N/A
Remodel bathroom replace (1) bathroom window
Valuation:
N/A
Permit #:
BLD2018-00025
Status:
final
Fee:
N/A
Permit Type:
General
Building Type:
N/A
Upgrade panel to 200 amps and rewire
Valuation:
N/A
Permit #:
ELE2018-00043
Status:
final
Fee:
N/A
Permit Type:
Electrical permit
Building Type:
N/A
Install plumbing for remodel
Valuation:
N/A
Permit #:
PLM2018-00102
Status:
final
Fee:
N/A
Permit Type:
plumbing permit
Building Type:
N/A
Install mechanical for remodel
Valuation:
N/A
Permit #:
MEC2018-00070
Status:
final
Fee:
N/A
Permit Type:
Mechanical permit
Building Type:
N/A
Whole house repipe
Valuation:
N/A
Permit #:
PLM2018-00037
Status:
final
Fee:
N/A
Permit Type:
plumbing permit
Building Type:
N/A
Manufactured remodel convert closet to laundry room. unit #102
Valuation:
N/A
Permit #:
B00-026-039
Status:
final
Fee:
$156
Permit Type:
Apartment house
Building Type:
N/A
Manufactured remodel convert closet to laundry room. unit 104
Valuation:
N/A
Permit #:
B00-025-808
Status:
final
Fee:
$141
Permit Type:
N/A
Building Type:
N/A
Manufactured remodel convert closet to laundry room
Valuation:
$5,000
Permit #:
B00-026-368
Status:
final
Fee:
$333
Permit Type:
Dwellings
Building Type:
N/A
Manufactured remodel convert closet to laundry room
Valuation:
$5,000
Permit #:
B00-026-367
Status:
final
Fee:
$333
Permit Type:
Dwellings
Building Type:
N/A
Replace grounding electrical & bond all grounding electrical. provide electrical service ground. replace receptacle outlets. comply w dept order dated 11/26/13. permit will expire 30 days from issuance date. 2 of 2 w #14044-10000-03822
Valuation:
N/A
Permit #:
14041-10000-10917
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Replace sub-standard floor furnace to a wall furnace. comply w dept order dated 11/26/13. permit will expire 30 days from issuance date. 1 of 2 w #14041-10000-10917
Valuation:
N/A
Permit #:
14044-10000-03822
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Replacing water heater. comply with department order effective date 11/26/2013. permit will expire 30 days from issuance date
Valuation:
N/A
Permit #:
14042-10000-22410
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Ti: riverside indoor shooting range; convert warehouse area into indoor shooting/archery range; construct cmu walls; drop ceiling w related mechanical & electrical systems
Valuation:
$200,000
Permit #:
12-2907
Status:
final
Fee:
N/A
Permit Type:
Aoth
Building Type:
N/A
Commercial remodel convert closet to laundry room in building 512 s. indian hill blvd unit 105
Valuation:
N/A
Permit #:
B00-024-718
Status:
final
Fee:
$125
Permit Type:
Apartment house
Building Type:
N/A
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BZ Score
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Projects
Exacto Builders Reviews
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Verified License
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Exacto Builders License info
Verified License
| License # | 929047 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Exacto Builders at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
96
BuildZoom Score
Bonded
| Bonded Agent | Business Alliance Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
47
Permits
- Building permit records show that Exacto Builders has worked on 47 permitted projects.
Exacto Builders Employees
OM
Oscar Mondragon
Sole Owner
OM
Oscar Mondragon
Owner