Location and Projects
GM Northrup Corporation Construction
Serving Key Largo and the upper Florida Keys, GM Northrup Corporation brings over three decades of experience to commercial building projects and residential construction. Founded in 1991, the company focuses on structural concrete, shell construction, and general contracting for new builds and renovations. Portfolio work includes custom homes, condominium complexes, and commercial properties. GM Northrup Corporation manages a range of project sizes, from single-family residences to multi-unit developments, with capabilities in site preparation, concrete framing, and large-scale shell work. The company serves property owners in Monroe County and surrounding areas throughout the upper Keys. This longstanding contractor is recognized locally for expertise in coastal building requirements and the logistical demands unique to construction in the Florida Keys.
GM Northrup Corporation Services
GM Northrup Corporation Contact Information
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
GM Northrup Corporation Key Largo
Quality
Activity
|
7 projects
|
2025 |
|
7 projects
|
2024 |
|
1 project
|
2023 |
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
4 projects
|
Commercial Renovations |
|
3 projects
|
Home Additions |
Pricing
|
3 projects
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
|
2 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
|
2 projects
|
$500k-$1mil |
|
1 project
|
$1mil+ |
Building Permits by GM Northrup Corporation
This is a sample of this contractor's permits. Click here to access their complete permit history.
Similar Contractors See more
GM Northrup Corporation Reviews
Recent Buildzoom Projects
Hiring a contractor?
GM Northrup Corporation License info
License Not Verified
| License # | CGC060354 |
| Status | Active |
| City | Clermont |
| Type | Contractor |
- When BuildZoom last verified this license, it had an expiration date of August, 2004. Check the current license status of GM Northrup Corporation with the The City of Clermont, FL
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CGC1508620 |
| Status | Active |
| State | Florida |
| Type | Certified General Contractor |
- BuildZoom verified this license was active as of July 2025.
Verify this license's status for GM Northrup Corporation at the Florida Department of Business & Professional Regulation.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CGC1508620 |
| Status | Active |
| County | Orange County |
| Type | B General Class A |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for GM Northrup Corporation at the Orange County Public Schools.
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| State | Florida |
| Type | Construction Business Information |
- BuildZoom verified this license was active as of November 2025.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | AEC-09086 |
| Status | Active |
| City | Lakeland |
| Type | General |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for GM Northrup Corporation at the City of Lakeland, FL.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | S-CGC1508620 |
| Status | Active |
| County | Sumter County |
| Type | Contractor |
- When BuildZoom last verified this license, it had an expiration date of August, 2022. Check the current license status of GM Northrup Corporation with the County of Sumter, FL
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CGC1508620 |
| Status | Inactive |
| Pinecrest | |
| Type | Contractor |
- According to the The Village of Pinecrest, Florida, 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 GM Northrup Corporation at the The Village of Pinecrest, Florida.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CGC1508620 |
| Status | Inactive |
| City | Ocala |
| Type | Certified Contractor |
- According to the The City of Ocala, Florida, 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 GM Northrup Corporation at the The City of Ocala, Florida.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CGC1508620 |
| Status | Inactive |
| City | Daytona Beach |
| Type | Contractor |
- According to the The City of Daytona Beach, FL, 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 GM Northrup Corporation at the The City of Daytona Beach, FL.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CNT003717 |
| Status | Inactive |
| County | Bay County |
- According to the The Bay County Builders' Services, FL, 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 GM Northrup Corporation at the The Bay County Builders' Services, FL.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CER0400143 |
| Status | Inactive |
| County | Bay County |
- According to the The Bay County Builders' Services, FL, 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 GM Northrup Corporation at the The Bay County Builders' Services, FL.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 12376 |
| Status | Inactive |
| County | Monroe County |
- According to the Monroe County, 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 GM Northrup Corporation at the Monroe County.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CBC055807 |
| Status | Inactive |
| City | Ocala |
| Type | Certified Contractor |
- According to the The City of Ocala, Florida, 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 GM Northrup Corporation at the The City of Ocala, Florida.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CGC60354 |
| Status | Inactive |
| City | Ocala |
| Type | Certified Contractor |
- According to the The City of Ocala, Florida, 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 GM Northrup Corporation at the The City of Ocala, Florida.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Hollywood |
| Type | General Contractor |
- According to the City of Hollywood Contractor Directory, 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 GM Northrup Corporation at the City of Hollywood Contractor Directory.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Hollywood |
| Type | General Contractor |
- According to the City of Hollywood Contractor Directory, 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 GM Northrup Corporation at the City of Hollywood Contractor Directory.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1508620 |
| Status | Inactive |
| State | Florida |
| Type | Certified General Contractor |
- According to the Florida Department of Business & Professional 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 GM Northrup Corporation at the Florida Department of Business & Professional Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0055807 |
| Status | Inactive |
| State | Florida |
| Type | Certified Building Contractor |
- According to the Florida Department of Business & Professional 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 GM Northrup Corporation at the Florida Department of Business & Professional Regulation.
This is a sample of licensing data; click here to access a complete history.
106
BuildZoom Score
Insured
| Insurer | Admann Martin Co |
Insured
| Workers Comp Provider | Associated Benefits |
178
Permits
- Building permit records show that GM Northrup Corporation has worked on 178 permitted projects.