Updated: May 28, 2026
Location and Projects
Address
504 S Mountain Ave, Ontario, CA, 91762
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Design Windows & Doors Inc
Design Windows & Doors Inc, 504 S Mountain Ave, Ontario, CA (Employees: Jill Lyn Pentolino, Onofrio Pentolino Ii, and Onofrio Joseph Pentolino) holds a Renovation license and 3 other licenses according to the Environmental Protection Agency license board.
Their BuildZoom score of 109 ranks in the top 5% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Design Windows & Doors Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Design Windows & Doors Inc Contact Information
Phone Number: (909) 260-7418
Address: 504 S Mountain Ave, Ontario, CA 91762
Design Windows & Doors Inc Ontario
Quality
109
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Design Windows & Doors Inc has a BuildZoom score of 109, which places them above 95% of 336,931 contractors in California.
Activity
|
12 projects
|
2025 |
|
3 projects
|
2024 |
|
11 projects
|
2023 |
Our building permit records indicate that Design Windows & Doors Inc has worked on at least
26.0 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
|
21 projects
|
Door and windows installations |
Analyzing permits over the last 4 years shows that Design Windows & Doors Inc mostly works on
door and windows installation
projects.
Pricing
|
2 projects
|
< $5k |
|
7 projects
|
$5k-$20k |
|
5 projects
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
The typical size of their permits is approximately $18,926. 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 Design Windows & Doors Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Retrofit replacement of front door. replacement of sliding glass door in living room; widening of the opening by 28. sliding glass door to have doggie door installed into operating panel. picture included in documents shows what the sliding door will look like with the doggie door installed. installation of new header and also new 4"x6 posts with hdu4. adding a 5'x9 shear wall. also t... see more
Valuation:
$80,232
Permit #:
2025-650
Status:
issued
Fee:
$462
Permit Type:
N/A
Building Type:
N/A
Window replacements units (a-b) all windows will be vinyl windows that meet california energy code title 24 unit (a) to include: replacing (6) aluminum windows windows in both bedrooms will be cut down to meet egress requirements unit (b) to include: replacing (5) aluminum windows in both bedrooms will be cut down to meet egress requirements please note: smoke and carbon mono... see more
Valuation:
$17,450
Permit #:
PR20230000529
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Window replacements unit (c) all windows will be vinyl windows that meet california energy code title 24 unit c to include: like for like replacement of 5 windows please note: smoke and carbon monoxide detectors to be installed prior to final
Valuation:
$17,450
Permit #:
PR20230000530
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Vinyl retrofit replacement of 4 windows. existing windows are vinyl new windows will be vinyl. there will be no changes to the size of the windows. there will be no changes to the existing framing and headers
Valuation:
N/A
Permit #:
B22-1219
Status:
issued
Fee:
$135
Permit Type:
N/A
Building Type:
N/A
R/r patio sliding door and (6) windows r/r stucco and modify (3) window openings to meet egress (no floor plans strucutral changes)
Valuation:
N/A
Permit #:
C2023-001642
Status:
final
Fee:
$871
Permit Type:
N/A
Building Type:
N/A
Remove/replace (23) windows *
Valuation:
N/A
Permit #:
B24-04442
Status:
final
Fee:
N/A
Permit Type:
Window change outs
Building Type:
N/A
Create opening on rear wall in kitchen family room area and install a 120 x 89 folding door system. door to be vinyl with loe3 glass and argon for title 24
Valuation:
N/A
Permit #:
PMT2021-05099
Status:
final
Fee:
$776
Permit Type:
N/A
Building Type:
N/A
Replacement of 13 windows with new energy efficient vinyl windows. no alteration to existing openings
Valuation:
$12,629
Permit #:
B2302531
Status:
final
Fee:
$257
Permit Type:
N/A
Building Type:
N/A
Proposed 18'-5 x 9'-9 conversion of open patio into a patio enclosure
Valuation:
$22,148
Permit #:
B202306177
Status:
plancheck
Fee:
$291
Permit Type:
N/A
Building Type:
N/A
Proposed enclosure of 15.9 x 9'-9 open patio. to an existing 2 story residence. slab on grade foundation system and conventional roof framing
Valuation:
$23,748
Permit #:
BPA23-0473
Status:
complete
Fee:
N/A
Permit Type:
Enclosed
Building Type:
N/A
Remove replace (7) bay windows to (n) construction frame- like for like size
Valuation:
N/A
Permit #:
C2023-004551
Status:
final
Fee:
$657
Permit Type:
N/A
Building Type:
N/A
Change out 1-front door system flow low copper finish. right hand metal inswing iron door with frosted obscured glass and ireon sidelite with frontsted glass. changed out 1- rear door for dun edwards silver bullet. rihgt hand metal roman 2-panel door. replace 2 doors only
Valuation:
N/A
Permit #:
BB1904596
Status:
final
Fee:
N/A
Permit Type:
Dwelling/duplex
Building Type:
N/A
Windows/doors
Valuation:
$8,457
Permit #:
BLD25-0346
Status:
final
Fee:
$238
Permit Type:
Alters_additions
Building Type:
N/A
Replace 2 windows with 1 door
Valuation:
$61,618
Permit #:
B2308-207
Status:
final
Fee:
$284
Permit Type:
Window changeout
Building Type:
N/A
Replace existing sliding door at second floor in kitchen area same size and location
Valuation:
$4,917
Permit #:
B202206258
Status:
issued
Fee:
$136
Permit Type:
N/A
Building Type:
N/A
Replace 33 existing steel windows with milgard tuscany retrofit vinyl windows a b c and d
Valuation:
N/A
Permit #:
BB2209361
Status:
issued
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
Plan check replacement of 35 windows & 5 sliding patio doors to be replaced with vinyl nail fin frames
Valuation:
$50,396
Permit #:
B00-030-811
Status:
plancheck
Fee:
$1,751
Permit Type:
Dwellings
Building Type:
N/A
Online window/door change out 26 windows & 2 sliding doors like for like fisher residence
Valuation:
N/A
Permit #:
B23-7292
Status:
issued
Fee:
N/A
Permit Type:
Remodel
Building Type:
N/A
(19) window change-out (same size & type) for residential buildings. dual glazing labeled & certified by national fenestration rating council (nfrc) is required for windows replaced in all residential buildings three stories or less per section 152(b) of title 24
Valuation:
$6,500
Permit #:
16016-10000-01065
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(19) window change-out (same size & type) for residential buildings. dual glazing labeled & certified by national fenestration rating council (nfrc) is required for windows replaced in all residential buildings three stories or less per section 152(b) of title 24
Valuation:
$6,500
Permit #:
16016-10000-01065
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Design Windows & Doors Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Design Windows & Doors Inc License info
Verified License
| License # | NAT-44727-4 |
| Status | Active |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Design Windows & Doors Inc at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 912367 |
| Status | Active |
| State | California |
| Type | Glazing, General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Design Windows & Doors Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | NAT-44727-3 |
| Status | Active |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Corporation |
- BuildZoom has not verified this license since April, 2024.
Verify this license's status for Design Windows & Doors Inc at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-44727-2 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Corporation |
- According to the United States Environmental Protection Agency, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Design Windows & Doors Inc at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Everest National Insurance Company |
90
Permits
- Building permit records show that Design Windows & Doors Inc has worked on 90 permitted projects.
Design Windows & Doors Inc Employees
JP
Jill Lyn Pentolino
Officer
OI
Onofrio Pentolino Ii
Rme
OP
Onofrio Joseph Pentolino
Rmo / Ceo / Pres