Updated: Apr 19, 2026
Location and Projects
Address
1907 YOLO AVENUE, Berkeley, CA, 94707
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ROY TRILLIA Construction
Based in Berkeley, California, ROY TRILLIA brings over three decades of experience to residential renovation and construction projects in the East Bay. The company works with homeowners on projects that range from kitchen and bathroom remodels to whole-house updates. Serving clients in Berkeley and the surrounding communities, ROY TRILLIA is equipped to handle a variety of property types, including single-family homes and vintage residences common in the area. With 36 years in the trade, they guide clients through local permitting requirements and are familiar with the region’s architecture styles. Projects emphasize thoughtful solutions suited to the neighborhood’s historic character and modern living needs.
ROY TRILLIA Services
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ROY TRILLIA Contact Information
Phone Number: (510) 524-1352
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Address: 1907 YOLO AVENUE, Berkeley, CA 94707
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ROY TRILLIA Berkeley
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
ROY TRILLIA has a BuildZoom score of 95, which places them above 78% of 336,931 contractors in California.
Activity
|
1 project
|
2023 |
Our building permit records indicate that ROY TRILLIA has worked on at least
1.0 project 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.
Pricing
|
1 project
|
$20k-$50k |
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.
540 sq ft addition to expand communal living space create a family room master bed and bathroom laundry and closet
Valuation:
$118,000
Permit #:
B2021-00270
Status:
final
Fee:
$6,341
Permit Type:
N/A
Building Type:
N/A
Create bathroom in (e) location replace (e) window in bedroom addition new window in bathroom addition non-load bearing wall in bedroom
Valuation:
$25,000
Permit #:
B2023-05047
Status:
plancheck
Fee:
$673
Permit Type:
N/A
Building Type:
N/A
Project is a remodel of an existing ground floor space to legalize space as an accessory dwelling unit. work includes remodeled kitchen and bathroom
Valuation:
$140,000
Permit #:
B2019-01994
Status:
final
Fee:
$7,300
Permit Type:
N/A
Building Type:
N/A
Remodel and addition. 4/13/2020: revised to eliminate adu; adu to be under separate permit
Valuation:
$100,000
Permit #:
B2019-05514
Status:
final
Fee:
$5,613
Permit Type:
N/A
Building Type:
N/A
Convert wall layout on (e) second story to create bathroom and replace/create windows on same level
Valuation:
$65,000
Permit #:
RB1703656
Status:
final
Fee:
$3,949
Permit Type:
N/A
Building Type:
N/A
Seismic upgrade $140, 000 for transfer tax rebate & kitchen remodel
Valuation:
$180,000
Permit #:
B2018-01139
Status:
final
Fee:
$9,378
Permit Type:
N/A
Building Type:
N/A
Plumbing convert wall layout on (e) second story to create bathroom and replace/create windows on same level
Valuation:
N/A
Permit #:
RP1800732
Status:
final
Fee:
$482
Permit Type:
N/A
Building Type:
N/A
(rm) - mechanical - 1 & 2 unit residential (building)
2018-07-11
Mechanical convert wall layout on (e) second story to create bathroom and replace/create windows on same level
Valuation:
N/A
Permit #:
RM1800683
Status:
final
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
(re) - electrical - 1 & 2 unit residential (building)
2018-07-11
Electrical convert wall layout on (e) second story to create bathroom and replace/create windows on same level
Valuation:
N/A
Permit #:
RE1801029
Status:
final
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
Convert wall layout on (e) second story to create bathroom and replace/create windows on same level
Valuation:
$65,000
Permit #:
RB1703656
Status:
final
Fee:
$3,949
Permit Type:
N/A
Building Type:
N/A
Repair 188 sq ft existing garage
Valuation:
$15,000
Permit #:
B2021-01299
Status:
final
Fee:
$984
Permit Type:
N/A
Building Type:
N/A
Found in city records inspect laundry enclosure no permit to provide bedroom for lower unit. no work in upper unit (1425 bonita). also 162sq.ft. addition to rear of building
Valuation:
$35,000
Permit #:
1500000334
Status:
ISSUED
Fee:
N/A
Permit Type:
Bp-4 (4 wk
Building Type:
N/A
Reframe roof/celing to convert 2nd floor closet to habitable space (approx. 58 sq.ft. area); install associated electrical improvements
Valuation:
N/A
Permit #:
186047
Status:
APPLIED
Fee:
N/A
Permit Type:
Co
Building Type:
Sf
Install photovoltaic electric system **ok for use of metallic raceway as per nec 2005 model code by renewable energy concepts. approval letter with permit copy in file advised contractor to have at job site at all times. approved jjc/kdd 11/16/07**
Valuation:
N/A
Permit #:
BI405026
Status:
final
Fee:
$247
Permit Type:
N/A
Building Type:
N/A
**kitchen remodel change window to door & close door. remove & relocate exterior stairs & landing
Valuation:
$18,000
Permit #:
1400004493
Status:
ISSUED
Fee:
N/A
Permit Type:
Bp-1 (1 wk
Building Type:
N/A
Kitchen remodel change window to door & close door. remove & relocate exterior stairs & landing
Valuation:
$18,000
Permit #:
B2014-04493
Status:
Closed Complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Dry rot repair item#6a on termite report#2846 & seismic upgrade for transfer tax rebate
Valuation:
$23,000
Permit #:
B2014-04262
Status:
Closed Complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Dry rot repair item#6a on termite report#2846 & seismic upgrade for transfer tax rebate
Valuation:
$23,000
Permit #:
1400004262
Status:
ISSUED
Fee:
N/A
Permit Type:
Bp-0 express
Building Type:
N/A
* * * revisions submitted to evaluate drawings for transfer tax refund. contractor picked up revision-9-12-12-sc1 seismic upgrade at crawl space
Valuation:
$10,000
Permit #:
1200002740
Status:
ISSUED
Fee:
N/A
Permit Type:
Bp-1 (1 wk
Building Type:
N/A
To addition piers and grade beam on 2 sides of foundation
Valuation:
N/A
Permit #:
BIFD19-004105
Status:
final
Fee:
$1,155
Permit Type:
N/A
Building Type:
N/A
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ROY TRILLIA Reviews
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ROY TRILLIA License info
Verified License
| License # | 540179 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for ROY TRILLIA at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 436470 |
| Status | Inactive |
| State | California |
| Type | General Building, Plumbing |
| Business Type | Sole Ownership |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for ROY TRILLIA at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 615717 |
| Status | Inactive |
| State | California |
| Type | General Building, Plumbing, Electrical |
| Business Type | Sole Ownership |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for ROY TRILLIA at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Norguard Insurance Company |
116
Permits
- Building permit records show that ROY TRILLIA has worked on 116 permitted projects.
ROY TRILLIA Employees
DT
Denis Ronald Trillia
General Partner
GT
George Richard Doug Trillia
Sole Owner
RT
Roy Alan John Trillia
Sole Owner