Updated: May 20, 2026
Location and Projects
Address
1831 WILLOWSIDE ROAD, Santa Rosa, CA, 95401
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Wollmer Custom Building Construction
Serving clients in Santa Rosa and throughout Sonoma County, Wollmer Custom Building specializes in custom home construction and residential remodels. Founded over two decades ago, the company has experience managing a range of building projects, from new ground-up homes to extensive renovations. Their portfolio showcases work on kitchens, bathrooms, additions, and whole-house remodels. Wollmer Custom Building works closely with property owners, architects, and designers to deliver projects tailored to each client’s needs. The company emphasizes transparent project management and communication at every phase of construction. With over 21 years of experience in Sonoma County, Wollmer Custom Building brings local knowledge to navigating building codes and project planning for both urban and rural sites.
Wollmer Custom Building Services
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Wollmer Custom Building Contact Information
Phone Number: (707) 571-8885
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Address: 1831 WILLOWSIDE ROAD, Santa Rosa, CA 95401
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Building Permits by Wollmer Custom Building
This is a sample of this contractor's permits. Click here to access their complete permit history.
2017 complex fire - single family dwelling 3297 sq attached garage 809 sq basement 549 sq covered patio 513 sq deck 522 sq- evt17-04553
Valuation:
N/A
Permit #:
BLD19-8027
Status:
issued
Fee:
$9,255
Permit Type:
N/A
Building Type:
N/A
2017 complex fire adu 540sf 2400sf garage evt17-00979 6/27/18: received revised plans - partitioning of lower level additional window skylights gas fireplace
Valuation:
N/A
Permit #:
BLD18-0996
Status:
final
Fee:
$5,888
Permit Type:
N/A
Building Type:
N/A
Fire repair to roof with electrical and new trusses
Valuation:
$19,000
Permit #:
B18-0058
Status:
final
Fee:
$510
Permit Type:
N/A
Building Type:
N/A
Residential: replace all (e) service panels install (1) 800 amp main service panel
Valuation:
N/A
Permit #:
BLD18-5259
Status:
final
Fee:
$245
Permit Type:
N/A
Building Type:
N/A
Revision to a residential fire-rebuild building permit. the revision is comprised of an addition of two new bedrooms; an extension of the basement area; and a new pool equipment bunker (the proposed pool will be under a separate permit). the addition and basement extension are increasing the total square footage by 1420 (including unconditioned spaces). the bedroom extension is 930sf ... see more
Valuation:
N/A
Permit #:
BLD19-8027.R01
Status:
complete
Fee:
$1,130
Permit Type:
N/A
Building Type:
N/A
Admin design review for new single family dwelling request for administrative design review for a new 1008 sq ft dwelling and site review for future main single family dwelling on a 15 acre site. the kitchen of the dwelling proposed in this adr will be removed when the application is made for the future house
Valuation:
$0
Permit #:
ADR10-0021
Status:
APRVD_CC
Fee:
$490
Permit Type:
N/A
Building Type:
N/A
New det'd workshop/studio 384 sq ft
Valuation:
N/A
Permit #:
BLD15-6338
Status:
final
Fee:
$3,840
Permit Type:
N/A
Building Type:
N/A
Upgrade one (1) existing driveway entrance to county standards on the north side of sonoma mountain rd 1.2 miles east of pressley rd located in bennett valley rd
Valuation:
$0
Permit #:
ENC07-0192
Status:
FINALED
Fee:
$398
Permit Type:
N/A
Building Type:
N/A
2017 complex fire - replace 80kw generator - evt17-00979
Valuation:
N/A
Permit #:
BLD20-7448
Status:
final
Fee:
$168
Permit Type:
N/A
Building Type:
N/A
Single family dwelling office & family w bathroom & dinrm addition remodel (34.7% improvement)
Valuation:
N/A
Permit #:
BLD07-0564
Status:
final
Fee:
$2,616
Permit Type:
N/A
Building Type:
N/A
Addition & covered trellis to single family dwelling
Valuation:
N/A
Permit #:
BLD11-0620
Status:
final
Fee:
$2,781
Permit Type:
N/A
Building Type:
N/A
2nd story addition of game room to e garage
Valuation:
N/A
Permit #:
BLD06-4027
Status:
plancheck
Fee:
$3,664
Permit Type:
N/A
Building Type:
N/A
Sfd: destruct redwood septic tank (sfd to be demolished per dem07-0078)
Valuation:
$0
Permit #:
SEP07-0241
Status:
FINALED
Fee:
$285
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel - minor electrical & plumbing
Valuation:
$9,000
Permit #:
B07-0044
Status:
final
Fee:
$179
Permit Type:
Single family dwe...
Building Type:
N/A
21 retrofit windows under sceip $31314
Valuation:
N/A
Permit #:
B09-3658
Status:
final
Fee:
$100
Permit Type:
N/A
Building Type:
N/A
New class 1 standard septic system
Valuation:
$0
Permit #:
SEP05-0989
Status:
FINALED
Fee:
$1,106
Permit Type:
N/A
Building Type:
N/A
Site review for proposed single family dwelling
Valuation:
$0
Permit #:
SEV10-0249
Status:
COMPLETE
Fee:
$232
Permit Type:
N/A
Building Type:
N/A
Demolition - 1500 sq ft single family dwelling
Valuation:
N/A
Permit #:
DEM07-0078
Status:
final
Fee:
$147
Permit Type:
N/A
Building Type:
N/A
Address correction for main unit and 2nd unit
Valuation:
$0
Permit #:
RNC11-0022
Status:
COMPLETE
Fee:
$139
Permit Type:
N/A
Building Type:
N/A
Electrical for septic pump
Valuation:
N/A
Permit #:
BLD05-5981
Status:
final
Fee:
$54
Permit Type:
N/A
Building Type:
N/A
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Verified License
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Wollmer Custom Building License info
Verified License
| License # | 621659 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Wollmer Custom Building 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 | Wesco Insurance Company |
| Bond Value | $15,000 |
16
Permits
- Building permit records show that Wollmer Custom Building has worked on 16 permitted projects.
Wollmer Custom Building Employees
JW
Jeffrey Ronald Wollmer
Rmo / Ceo / Pres