Updated: Mar 02, 2026
Location and Projects
Address
1610 DEL AVE UNIT B, Campbell, CA, 95008
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Bonsai Builder Construction
Founded in 1989 by Ernest Culp, Bonsai Builder Construction specializes in crafting and renovating luxury homes throughout Los Gatos, Saratoga, and nearby Silicon Valley communities. The firm delivers comprehensive design-build services, managing projects from initial concept through final construction. Bonsai Builder Construction provides in-house design capabilities and handles all phases of custom home development, including property management when needed. Ernest Culp began in real estate before moving into development as demand for bespoke luxury residences in the area increased. With more than three decades of experience, Bonsai Builder Construction is frequently engaged for distinctive, one-of-a-kind family homes that emphasize premium finishes and enduring aesthetic appeal. The company’s service model centers on close collaboration with clients to realize their vision for unique, high-value properties.
Bonsai Builder Construction Services
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Bonsai Builder Construction Contact Information
Phone Number: (408) 374-4115
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Address: 1610 DEL AVE UNIT B, Campbell, CA 95008
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Bonsai Builder Construction Campbell
Quality
106
93rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Bonsai Builder Construction has a BuildZoom score of 106, which places them above 93% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
4 projects
|
2024 |
|
3 projects
|
2023 |
Our building permit records indicate that Bonsai Builder Construction has worked on at least
10.0 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
|
Home Additions |
|
3 projects
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that Bonsai Builder Construction mostly works on
kitchen remodel
and home addition
projects.
Pricing
|
1 project
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
|
2 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
The typical size of their permits is approximately $65,689. 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 Bonsai Builder Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
Construct a new 1653.8 sq ft two-story single-family residence with new 178.80 sq ft guest house and below grade 1130.70 sq ft 2-car garage and storage. includes new driveway walkway & front and back patios 911 sq ft total. demolition of existing single-story residence and attached guest house will be applied for on a separate application
Valuation:
$477,140
Permit #:
24CP02547
Status:
applied
Fee:
$22,273
Permit Type:
N/A
Building Type:
N/A
Scope of work relocate kitchen and dining rooms infill (e) french doors addition window expand laundry room. remove five interior walls. r/r (e) windows in larger opening in dining room 2 (n) windows in kitchen addition of skylight
Valuation:
$13,254
Permit #:
2023 088405 RS
Status:
issued
Fee:
$1,584
Permit Type:
Single-family
Building Type:
N/A
The interior remodel of the kitchen & master bathroom 1100 sf (850 sf at 1st story & 250 sf at 2nd story). remove walls to create an open space between living room and breakfast room. master bathroom complete remodel including the elimination of one window. installing a new water heater and furnace (ducting remains as existing). lighting upgrade will replace existing recessed lights w... see more
Valuation:
$150,000
Permit #:
B24-0127
Status:
final
Fee:
$5,937
Permit Type:
N/A
Building Type:
Dwellings
** must final permit 21-042211 (interior walls demo) prior to finaling this permit ** retail store tenant improvement for mercantile with mezzanine ** issue certificate of occupancy ** scope of work: new tenant's tenant improvement to include combining two suites into one new partial story platform lift internal elevated walkway offices showroom storage and installation space for home... see more
Valuation:
$1,493,111
Permit #:
2022 657495 CI
Status:
issued
Fee:
$13,493
Permit Type:
Retail
Building Type:
N/A
This project involves the interior remodel of the kitchen removing some walls to create an open space between living room and breakfast room. master bathroom complete remodel including the elimination of one window. installing a new water heater and furnace (ducting remains as existing). lighting upgrade will replace existing recessed lights with energy efficient led recessed cans
Valuation:
N/A
Permit #:
PRE24-00136
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Scope of work: existing 1-story commercial office/mercantile with mezzanine. tenant improvement includes combining two suites into one new partial story platform lift internal elevated walkway offices showroom storage and installation space for home and car audio equipment for a total tenant area of 17, 727 sf. demolition scope is under sti 21-030757
Valuation:
$1,493,111
Permit #:
2021 042778 CI
Status:
filed
Fee:
N/A
Permit Type:
Office
Building Type:
N/A
To construct a conversion for a jr. adu conversion (2nd level) remodel and addition on 1st level with kitchen dining living family mud room pantry and propose deck
Valuation:
$160,000
Permit #:
PRE22-01253
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior walls demolish only (non-structural and non fire-rated) ** not for occupancy ** • interior non-structural and non-fire-rated walls • non-structural equipment mezzanine pony walls and ladder • non-structural stair handrails and guardrails • restroom accessories and finishes (partitions casework plumbing fixtures grab bars mirrors tile etc) • remove and safe off all existing el... see more
Valuation:
N/A
Permit #:
2021 030757 CI
Status:
issued
Fee:
N/A
Permit Type:
Office
Building Type:
N/A
Install 3 new skylights and provide appropriate framing per manufacturer requirements at ceiling and roof areas
Valuation:
$5,000
Permit #:
B22-0924
Status:
final
Fee:
$457
Permit Type:
N/A
Building Type:
Dwellings
Remove tile roof and install new comparable roof 4000 sf
Valuation:
$35,000
Permit #:
B22-0863
Status:
final
Fee:
$914
Permit Type:
N/A
Building Type:
Dwellings
Replace all electrical lighting w new led lights at 1st and 2nd floor. replace all floors to new tiles & wood. replace cabinets in all bathrooms and plumbing fixtures in all 5 bathrooms. total remodel 360 sf
Valuation:
$100,000
Permit #:
B18-0739
Status:
final
Fee:
$4,534
Permit Type:
N/A
Building Type:
N/A
2 major bathroom remodels to include: master: remove (e) wall adding pocket door r/r exhaust fan associated fixtures switches receptacles hall bath: tub to roll in shower r/r plumbing fixtures (n) pocket door r/r exhaust fan associated electrical fixtures switches receptacles widen (e) garage swing door
Valuation:
$30,200
Permit #:
2019 104329 RS
Status:
final
Fee:
N/A
Permit Type:
Single family
Building Type:
N/A
Install 3 new skylights and provide appropriate framing per manufacturer requirements at ceiling and roof areas
Valuation:
N/A
Permit #:
PRE22-01251
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove existing patio door and install larger bifolding patio door
Valuation:
N/A
Permit #:
BIAL23-014230
Status:
expired
Fee:
$239
Permit Type:
N/A
Building Type:
N/A
Remove existing patio door and install larger bifolding patio door
Valuation:
N/A
Permit #:
BISUB23-02786
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Landscape screening plan
Valuation:
N/A
Permit #:
BP24-00373
Status:
issued
Fee:
N/A
Permit Type:
New acc structure
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
2022 666024 RS
Status:
issued
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
Interior walls demolish only ** not for occupancy ** scope of work: 1) demolish interior non-structural and non fire-rated 2) demolish non-structural equipment mezzanine pony walls and ladder 3) demolish non-structural stair handrails and guardrails 4) remove restroom accessories and finishes partitions fixtures 5) remove and safe off all electrical mechanical and plumbing fixtures
Valuation:
$60,000
Permit #:
2021 042211 CI
Status:
issued
Fee:
N/A
Permit Type:
Office
Building Type:
N/A
Remodel1 270 sf total 940 sf at 1st story and 330 sf at 2nd story
Valuation:
$160,000
Permit #:
B22-0982
Status:
issued
Fee:
$7,661
Permit Type:
N/A
Building Type:
Dwellings
New deck extension aprox. 30 sq. ft and new trellis above the existing deck around 248 sq. ft
Valuation:
$45,000
Permit #:
B22-0544
Status:
issued
Fee:
$1,554
Permit Type:
N/A
Building Type:
Dwellings
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Bonsai Builder Construction Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Bonsai Builder Construction License info
Verified License
| License # | 575422 |
| 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 Bonsai Builder Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
106
BuildZoom Score
Bonded
| Bonded Agent | State National Insurance Company Inc |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Falls Lake Fire & Casualty Company |
41
Permits
- Building permit records show that Bonsai Builder Construction has worked on 41 permitted projects.
Bonsai Builder Construction Employees
EC
Ernest Paul Culp
Sole Owner