Updated: May 19, 2026
Location and Projects
Address
32 Cowasset Ln, Waltham, MA, 02451
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Walter E Ohnemus Iv Construction
Walter E Ohnemus Iv, 32 Cowasset Ln, Waltham, MA (Owned by: Walter Ohnemus) holds a Home Improvement Contractor license and 6 other licenses according to the Massachusetts license board.
Their BuildZoom score of 95 ranks in the top 22% of 139,240 Massachusetts licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Walter E Ohnemus Iv, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Walter E Ohnemus Iv Services
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Unit 1 & 2-renovate existing kitchens install new fixtures in bathrooms
Valuation:
N/A
Permit #:
P202540359
Status:
final
Fee:
$576
Permit Type:
N/A
Building Type:
104 two-family
Demolish existing in ground pool
Valuation:
N/A
Permit #:
P202341355
Status:
issued
Fee:
$168
Permit Type:
N/A
Building Type:
N/A
New single family dwelling - (took down to the foundation) adding a farmers porch rear deck finnished basement
Valuation:
N/A
Permit #:
P202140014
Status:
final
Fee:
$6,000
Permit Type:
N/A
Building Type:
101 single family
Demolish existing single family dwelling
Valuation:
N/A
Permit #:
P202041645
Status:
issued
Fee:
$120
Permit Type:
N/A
Building Type:
N/A
83 boynton st - construction of single family home
Valuation:
N/A
Permit #:
P201841175
Status:
final
Fee:
$4,504
Permit Type:
N/A
Building Type:
101 single family
280 moody st - 3 rooftop units and ductwork
Valuation:
N/A
Permit #:
P202041103
Status:
issued
Fee:
$282
Permit Type:
N/A
Building Type:
N/A
Demolish existing single family home
Valuation:
N/A
Permit #:
P201841023
Status:
ISSUED
Fee:
$180
Permit Type:
Demolition
Building Type:
101 single family
Repair and paint siding
Valuation:
N/A
Permit #:
P201841204
Status:
ISSUED
Fee:
$1,100
Permit Type:
Siding
Building Type:
316 other storage...
200 amp service and rewire house
Valuation:
N/A
Permit #:
W000047854
Status:
issued
Fee:
$75
Permit Type:
N/A
Building Type:
N/A
Addition of a second dwelling unit onto existing single family home
Valuation:
N/A
Permit #:
P202340968
Status:
final
Fee:
$5,640
Permit Type:
N/A
Building Type:
101 single family
Unit #2 - construction of 2 family dwelling
Valuation:
N/A
Permit #:
P201641508
Status:
ISSUED
Fee:
$4,195
Permit Type:
Residential new
Building Type:
101 single family
Unit #1 - construction of 2 family home
Valuation:
N/A
Permit #:
P201641509
Status:
ISSUED
Fee:
$4,195
Permit Type:
Residential new
Building Type:
101 single family
Construction of single family home
Valuation:
N/A
Permit #:
P201742066
Status:
ISSUED
Fee:
$3,748
Permit Type:
Residential new
Building Type:
101 single family
Construction of single family home
Valuation:
N/A
Permit #:
P201742064
Status:
ISSUED
Fee:
$4,575
Permit Type:
Residential new
Building Type:
101 single family
Construction of single family home
Valuation:
N/A
Permit #:
P201741042
Status:
final
Fee:
$4,428
Permit Type:
N/A
Building Type:
101 single family
Demolish existing single family
Valuation:
N/A
Permit #:
P201741907
Status:
ISSUED
Fee:
$120
Permit Type:
Demolition
Building Type:
101 single family
Demolish existing single family
Valuation:
N/A
Permit #:
P201741107
Status:
ISSUED
Fee:
$180
Permit Type:
Demolition
Building Type:
101 single family
Demolish single family home
Valuation:
N/A
Permit #:
P201641375
Status:
ISSUED
Fee:
$120
Permit Type:
Demolition
Building Type:
101 single family
4 high retaining wall
Valuation:
N/A
Permit #:
P201640991
Status:
issued
Fee:
$172
Permit Type:
N/A
Building Type:
N/A
Zba case #2019-28 - renovations of existing single family home
Valuation:
N/A
Permit #:
P202041021
Status:
final
Fee:
$3,000
Permit Type:
N/A
Building Type:
101 single family
Walter E Ohnemus Iv Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Walter E Ohnemus Iv License info
Verified License
| License # | 189131 |
| Status | Active |
| State | Massachusetts |
| Type | Home Improvement Contractor |
| Date Issued | 12-05-2025 |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for Walter E Ohnemus Iv at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CS-105799 |
| Status | Active |
| State | Massachusetts |
| Type | Building Licenses, Construction Supervisor |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Walter E Ohnemus Iv at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 236538 |
| Status | Active |
| City | Newton |
| Type | Building Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of Walter E Ohnemus Iv with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 236538 |
| Status | Active |
| City | Newton |
| Type | Residential Builder |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of Walter E Ohnemus Iv with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 155514 |
| Status | Inactive |
| State | Massachusetts |
| Type | Home Improvement Contractor |
- According to the Mass.gov Consumer Affairs and Business Regulation, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Walter E Ohnemus Iv at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CS-076818 |
| Status | Inactive |
| State | Massachusetts |
| Type | Building Licenses, Construction Supervisor |
- According to the Massachusetts Department of Public Safety, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Walter E Ohnemus Iv at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 171973 |
| Status | Inactive |
| State | Massachusetts |
| Type | Home Improvement Contractor |
- According to the Mass.gov Consumer Affairs and Business Regulation, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Walter E Ohnemus Iv at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
93
Permits
- Building permit records show that Walter E Ohnemus Iv has worked on 93 permitted projects.
Walter E Ohnemus Iv Employees
WO
Walter E Ohnemus
Owner
WO
Walter Ohnemus
Owner
WI
Walter Ohnemus Iii
Owner