Updated: May 18, 2026
Location and Projects
Address
6791 Sebastopol Ave, Sebastopol, CA, 95472
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Leff Construction Design Build Photos
Leff Construction Design Build
LEFF Construction Design Build, founded in 1978, is located in Sebastopol, California and designs, builds and remodels homes in the beautiful wine country region of Sonoma County. Our award-winning projects – set among redwood-covered hills, vineyards, coastal communities and farmland – perfectly reflect our clients’ desire to share in the exceptional lifestyle that makes this one of the most desired regions in the country.
From BuildZoom: Leff Construction Design Build, 6791 Sebastopol Ave, Sebastopol, CA (Employees: David Johnathan Leff and Lisa Gail Newbold) holds a General Building license and 2 other licenses according to the California license board.
Their BuildZoom score of 119 ranks in the top 1% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Leff Construction Design Build, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Leff Construction Design Build Services
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Leff Construction Design Build Contact Information
Phone Number: (707) 823-4899
Address: 6791 Sebastopol Ave, Sebastopol, CA 95472
Leff Construction Design Build Sebastopol
Quality
119
99th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Leff Construction Design Build has a BuildZoom score of 119, which places them above 99% of 336,931 contractors in California.
Activity
|
6 projects
|
2025 |
|
9 projects
|
2024 |
|
9 projects
|
2023 |
Our building permit records indicate that Leff Construction Design Build has worked on at least
24.0 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
|
9 projects
|
Home Additions |
|
12 projects
|
Kitchen remodels |
|
5 projects
|
Multi-room remodels |
Analyzing permits over the last 4 years shows that Leff Construction Design Build mostly works on
kitchen remodel
and home addition
projects.
Pricing
|
1 project
|
$5k-$20k |
|
1 project
|
$50k-$100k |
|
2 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
The typical size of their permits is approximately $212,500. 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 Leff Construction Design Build
This is a sample of this contractor's permits. Click here to access their complete permit history.
Remodel of an existing single family residence to include: primary bathroom remodel: remove all fixtures and finishes; to be replaced with new creation of primary walk-in closet guest bathroom remodel: remove all fixtures and finishes; to be replaced with new kitchen remodel : remove all fixtures and finishes; to be replaced with new removal of 2 wood burning fireplaces: replace with ... see more
Valuation:
$500,000
Permit #:
B25-2091
Status:
issued
Fee:
$2,980
Permit Type:
N/A
Building Type:
N/A
Conversion of garage resulting in new 337 sf jadu and minor remodel resulting in1549 sf primary livable area in existing single family dwelling (bathroom &bedroom remodel remove existing fireplace & replace with new gas fireplace. (jadu address 1992 elizabeth way; primary single family dwelling address is 1990 elizabeth way)
Valuation:
$309,300
Permit #:
B25-1843
Status:
issued
Fee:
$2,238
Permit Type:
N/A
Building Type:
N/A
Demolition permit in association with permit #b25-2091 in plan review with building. i would like to start demolition on this project and request that the following scope of work be removed from the original application and expedited to an over-counter approval for demolish. scope of work to include: area of remodel: 875 sq/ft: removal of existing exterior doors and windows (to be rep... see more
Valuation:
$20,000
Permit #:
B25-3262
Status:
withdrawn
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Demolition permit request in associate with existing remodeling permit that is currently in plan review (b25-1843 jandon b. approved in planning) to include removal of existing wood burning masonry fireplace removal of existing garage door (to be infilled) removal of existing garage siding for new man door entry saw cut and removal of section of existing concrete slab for new shower d... see more
Valuation:
$15,000
Permit #:
B25-3260
Status:
plancheck
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel existing kitchen remodel existing bathroom decommission existing powder bathroom remove closet in bedroom 4 remove existing wood-burning fireplace and replace with new gas unit remove and replace 2 existing pyramid skylights with new of same size and location remove and replace 2 windows with new of same size and location. no addition to square footage no additional glass or v... see more
Valuation:
N/A
Permit #:
BLD20-4047
Status:
final
Fee:
$2,098
Permit Type:
N/A
Building Type:
N/A
Sfd-replace french entry doors in kind install new windows and glass door at rear elevation; install new wui approved siding at same elevation. remodel kitchen replace (e) fau with new heat pump system calgreen exempt
Valuation:
N/A
Permit #:
BLD23-0266
Status:
final
Fee:
$2,990
Permit Type:
N/A
Building Type:
N/A
Kitchen and two baths remodel
Valuation:
$250,000
Permit #:
CC21-046
Status:
final
Fee:
$7,616
Permit Type:
Construction and ...
Building Type:
N/A
Building revision: change to rear deck area and addition new wood trellis (450 sf) w minor change to rear patio seating/screen wall area near bedroom #5 [original desc- single family dwelling addition (776 sf) & remodel (88 sf) with new deck (941 sf)]
Valuation:
N/A
Permit #:
BLD22-3437.R01
Status:
complete
Fee:
$969
Permit Type:
N/A
Building Type:
N/A
Res-bathroom repair mold remediation. replace drywall/all fixtures. no reconfiguration. change out (1) window behind privacy screen-not visible to exterior
Valuation:
N/A
Permit #:
BLD22-6814
Status:
final
Fee:
$456
Permit Type:
N/A
Building Type:
N/A
Revision to site plan showing proposed owner supplied power pole and 400a meter on site with pg&e drop from existing power pole at street to new pole location and underground run to existing subpanel location at house
Valuation:
N/A
Permit #:
BLD22-2057.R01
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Because of the limited amount of fall we are adding a grinder/ejector pump outside of the bathroom which will connect to the existing septic system. the pump chosen has been identified on page 9 of the attached document and will be placed in a 30 diameter basin as identified on page 12
Valuation:
N/A
Permit #:
BLD20-8773.R01
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrical revision. plans now show a 100a service and meter to the building instead of a subpanel as was originally called out. for ag well pump only revision is noted on site plan floor plan and exterior elevations sheets a.1 a.2 & a.3 respectively. scope of work also notes this revision on sheet c.1
Valuation:
N/A
Permit #:
BLD20-5453.R01
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1) all interior work 2) finish and condition existing unconditioned partially finished walk-out basement - 425 sf 3) addition conditioned interior stair from basement to existing living room above 4) addition half bathroom to basement 5) no change to exterior no change to glazing. total added conditioned space area of remodel 475 sf title 24 required
Valuation:
N/A
Permit #:
BLD20-1972
Status:
final
Fee:
$3,708
Permit Type:
N/A
Building Type:
N/A
Kitchen and bathroom remodel with repairs from tubbs-adobe fire 2017. new fixtures and finishes replace 7 doors like-for-like 1 window c/o like for like new insulation new drywall first floor ceiling replace water heater and replace gas insert fireplace (2)
Valuation:
$350,000
Permit #:
B18-1368
Status:
final
Fee:
$880
Permit Type:
N/A
Building Type:
N/A
Reversed locations of powder room and booth lowered deck 21 revised location of fireplace and chimney to simplify roof framing
Valuation:
N/A
Permit #:
BLD21-9251.R01
Status:
complete
Fee:
$452
Permit Type:
N/A
Building Type:
N/A
Legalize new living room addition (324 sf) work includes: roofing framing interior/exterior finishes foundation windows/doors electrical mechanical & new gas fireplace
Valuation:
N/A
Permit #:
BLD21-7387
Status:
final
Fee:
$3,407
Permit Type:
N/A
Building Type:
N/A
166 sf addition to existing 1422 sf single family dwelling. remodel kitchen existing bathroom and laundry room. area of remodel does not exceed 50% of sq. footage therefore fire sprinklers are not required
Valuation:
$150,000
Permit #:
B19-4336
Status:
final
Fee:
$2,478
Permit Type:
N/A
Building Type:
N/A
Addition 240 sf to existing 450 sf garage and create a 51 sf storage room with a utility sink. run approx. 30 ft of cold water line from house to new sink in garage. hillside review is not required and set backs are approved per m. sheikhali no further planning review is required revision 10/16/19 - addition main panel replacement to scope of work 100 amp same location. 1/10/2020 revi... see more
Valuation:
$50,000
Permit #:
B19-4664
Status:
final
Fee:
$2,447
Permit Type:
N/A
Building Type:
N/A
Interior remodel of kitchen & primary bathroom which includes adding vaulted ceiling. remove bathroom 2 & bedroom 3 (1980 sf) & new outside trellis (694 sf)
Valuation:
N/A
Permit #:
BLD22-2057
Status:
issued
Fee:
$6,453
Permit Type:
N/A
Building Type:
N/A
Install helical piers to stabilize floor and correct floor leveling issues. 4/8/2021 revision to floor framing
Valuation:
$200,000
Permit #:
B21-0780
Status:
final
Fee:
$640
Permit Type:
N/A
Building Type:
N/A
Leff Construction Design Build Reviews
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Verified License
BuildZoom confirmed this contractor's license
Leff Construction Design Build License info
Verified License
| License # | 521133 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for Leff Construction Design Build at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-21450-2 |
| 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 Leff Construction Design Build at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 367146 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Leff Construction Design Build at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
119
BuildZoom Score
Bonded
| Bonded Agent | Developers Surety & Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Everest Premier Insurance Company |
230
Permits
- Building permit records show that Leff Construction Design Build has worked on 230 permitted projects.
Leff Construction Design Build Employees
DL
David Johnathan Leff
Rmo/Ceo/Pres
LN
Lisa Gail Newbold
Officer