Updated: May 28, 2026
Location and Projects
Address
43 HILLSIDE TERR., Belmont, MA, 02478
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Karl H Klasson Construction
Serving Belmont, Massachusetts, and the surrounding area, Karl H Klasson specializes in residential construction and renovation projects. With 10 years of experience, Karl H Klasson works with homeowners seeking updates to existing properties or new construction solutions. The business manages projects that include interior and exterior remodeling, home additions, and repairs. Based in Belmont, Karl H Klasson collaborates directly with clients to ensure that home improvement goals are met efficiently and according to local building codes. The company’s portfolio reflects a focus on single-family homes in the community, supporting clients throughout the stages of planning, permitting, and construction.
Karl H Klasson Services
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Karl H Klasson Contact Information
Phone Number: (617) 484-8295
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Address: 43 HILLSIDE TERR., Belmont, MA 02478
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Karl H Klasson Belmont
Quality
96
80th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Karl H Klasson has a BuildZoom score of 96, which places them above 80% of 139,240 contractors in Massachusetts.
Activity
|
1 project
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Karl H Klasson has worked on at least
3.0 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.
Pricing
|
1 project
|
< $5k |
|
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.
Parcel 058-000-013a-000 is a buildable lot. this is a zoning opinion only based upon assessors’ records and documents submitted by the petitioner. must comply with all applicable codes and by-laws
Valuation:
N/A
Permit #:
Z20220801
Status:
issued
Fee:
$25
Permit Type:
Residential zonin...
Building Type:
N/A
Remove bearing partition - install header 2 x 11'6 - changing two bedrooms on second floor into one larger bedroom
Valuation:
$500
Permit #:
A20181450
Status:
issued
Fee:
$40
Permit Type:
Residential addit...
Building Type:
N/A
No Description Available
Valuation:
$3,000
Permit #:
BP-23-381
Status:
issued
Fee:
$50
Permit Type:
Deck
Building Type:
N/A
No Description Available
Valuation:
$10,000
Permit #:
BP-19-54
Status:
issued
Fee:
$150
Permit Type:
Alteration/Remodel
Building Type:
N/A
No Description Available
Valuation:
$15,000
Permit #:
BP-22-128
Status:
issued
Fee:
$225
Permit Type:
Kitchen remodeling
Building Type:
N/A
No Description Available
Valuation:
$13,000
Permit #:
BP-19-920
Status:
issued
Fee:
$195
Permit Type:
Deck
Building Type:
N/A
No Description Available
Valuation:
$25,000
Permit #:
BP-23-481
Status:
issued
Fee:
$375
Permit Type:
Alteration/remodel
Building Type:
N/A
No Description Available
Valuation:
$20,000
Permit #:
BP-16-282
Status:
issued
Fee:
$300
Permit Type:
Deck
Building Type:
N/A
No Description Available
Valuation:
$6,000
Permit #:
BP-20-299
Status:
issued
Fee:
$90
Permit Type:
Deck
Building Type:
N/A
No Description Available
Valuation:
$20,000
Permit #:
BP-24-313
Status:
final
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
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Karl H Klasson Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Karl H Klasson License info
Verified License
| License # | 183671 |
| Status | Active |
| State | Massachusetts |
| Type | Home Improvement Contractor |
| Date Issued | 11-02-2025 |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Karl H Klasson 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-040190 |
| 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 Karl H Klasson 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 # | 113319 |
| Status | Active |
| City | Newton |
| Type | Electrical Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of Karl H Klasson with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 225821 |
| 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 Karl H Klasson with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 225821 |
| 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 Karl H Klasson with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 113319 |
| Status | Active |
| City | Newton |
| Type | General Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of Karl H Klasson with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 104370 |
| 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. If this is your business, please update your license status.
Check this license's status for Karl H Klasson at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
96
BuildZoom Score
6
Permits
- Building permit records show that Karl H Klasson has worked on 6 permitted projects.
Karl H Klasson Employees
KK
Karl H Klasson
Responsible Person
KK
Karl H. Klasson
Owner
KK
Karl Klasson
Owner