Updated: Jun 06, 2026
Location and Projects
Address
12 WEST 27TH STREET 7TH FL, New York, NY, 10001
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Caldwell & Walsh Building Construction Inc
Founded over three decades ago, Caldwell & Walsh Building Construction Inc. serves clients across New York, NY, and the surrounding metro area. The company specializes in commercial building construction, with a portfolio that includes healthcare facilities, educational institutions, laboratories, and corporate office fit-outs. Caldwell & Walsh is experienced in both ground-up construction projects and complex renovations in occupied spaces, with capabilities that extend to fast-track interiors and specialized healthcare environments. The firm works with a range of clients, from healthcare networks and private corporations to higher education institutions, managing projects from preconstruction through completion. Their approach includes detailed project planning, phased scheduling, and the ability to coordinate construction activities around the needs of operational facilities. With 35 years in business, Caldwell & Walsh emphasizes collaboration with architects, engineers, and stakeholders to deliver tailored building solutions.
Caldwell & Walsh Building Construction Inc Services
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Caldwell & Walsh Building Construction Inc Contact Information
Phone Number: (212) 661-6979
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Address: 12 WEST 27TH STREET 7TH FL, New York, NY 10001
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Caldwell & Walsh Building Construction Inc New York
Quality
106
93rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Caldwell & Walsh Building Construction Inc has a BuildZoom score of 106, which places them above 93% of 77,888 contractors in New York.
Activity
|
1 project
|
2025 |
|
4 projects
|
2024 |
|
4 projects
|
2023 |
Our building permit records indicate that Caldwell & Walsh Building Construction Inc has worked on at least
9.0 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-$20k |
|
1 project
|
$50k-$100k |
|
2 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
|
1 project
|
$500k-$1mil |
|
2 projects
|
$1mil+ |
The typical size of their permits is approximately $165,000. 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 Caldwell & Walsh Building Construction Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Modifications to exist mechanical system associated with interior renovation of exist laboratories on 9th floor penthouse roofs - bronk lab building rockefeller university. no change in use occupancy or egress. refer to comments for additional info
Valuation:
$100,000
Permit #:
M00966068-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Filing herewith general construction to include interior renovation and minor interior demolish to an existing commercial space located on 1c/2m and 2c/3m as per plans
Valuation:
$5,500,000
Permit #:
M00932500-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior renovation of existing laboratories on 9th floor penthouse roofs - bronk lab building rockefeller university. new partitions cabinets counters and finishes. modification to suspended ceiling system. no change in use occupancy or egress
Valuation:
$63,000
Permit #:
M00966047-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mount sinai - kravis roof mechanical modifications - mechanical modifications including a new vfd on the 8th floor and new rooftop fan as indicated on plans filed herewith. no change in use egress or occupancy
Valuation:
$150,000
Permit #:
M00390850-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical work associated with thebaud hall renovation of basement and 001 floor minor work on 002-003 floors mechanical. rooms including installation of a new condensing unit on a roof and indoors new hydronic cabinet unit heaters and associated ductwork
Valuation:
$960,000
Permit #:
X00358771-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical work associated with thebaud hall renovation of basement installation of a temp.heater on a 1st floor removal of old boilers boiler breeching steem piping demolish installation of a new new mechanical. units hydronic system and associated ductwork
Valuation:
$640,000
Permit #:
X00344730-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of new ductwork ceiling diffusers and related piping as shown on drawings no change to use egress or occupancy
Valuation:
$1,562,260
Permit #:
M00513801-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Ruttenberg treatment center infusion expansion - interior renovations including modifications to non load bearing partitions ceilings flooring doors and related construction as per plans filed herewith. no change in use egress or occupancy
Valuation:
$850,000
Permit #:
M08030405-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior renovation of walls hung ceilings doors and floor treatment in existing medical space. as shown on drawings no change to use egress or occupancy
Valuation:
$2,064,846
Permit #:
M00513574-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Filing herewith interior renovation to include ninior to an existing offices and labs as per plans
Valuation:
$2,150,000
Permit #:
M08020698-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New steel members to support new lighting slab trenching and concrete infill as shown on drawings. no change to use egress or occupancy
Valuation:
$219,000
Permit #:
M00514051-I1-ST
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Nyu - orthopedic or ceiling renovation - mechanical modifications according to plans filed herewith. no change to use egress or occupancy
Valuation:
$195,000
Permit #:
M00531793-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Structural modifications associated with interior renovation of existing laboratories on 9th floor penthouse roofs - bronk lab building rockefeller university. no change in use occupancy or egress
Valuation:
$15,000
Permit #:
M00966090-I1-ST
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mount sinai - atran 6 - interior renovations including modifications to non load bearing partitions flooring doors millwork and related construction as per plans filed herewith. no change in use egress or occupancy
Valuation:
$690,000
Permit #:
M00519299-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior renovation of the offices on 003fl at the thebaud hall including interior partitions removal and installation. no change of use egress or occupancy
Valuation:
$1,900,000
Permit #:
X00579126-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Filing herewith application for interior building out as per plans submitted
Valuation:
$300,000
Permit #:
M00911779-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior renovation of office areas removal of interior partitions and ceiling fixtures. includes finish upgrades to areas indicated in drawing set. no change to use egress or occupancy
Valuation:
$323,683
Permit #:
M00516287-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Nyu - orthopedic or ceiling renovation - ceiling modifications according to plans filed herewith. no change to use egress or occupancy
Valuation:
$135,000
Permit #:
M00531786-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical scope associated with the 003fl renovation thebaud hall. no change of use egress or occupancy
Valuation:
$500,000
Permit #:
X00579126-S3-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Herewith filing interior alterations work on 4th 5th and 6th floor. general construction work as per plans submitted. no change to use egress or occupancy
Valuation:
$1,050,000
Permit #:
M00652869-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
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Caldwell & Walsh Building Construction Inc License info
Verified License
| License # | NAT-115664-2 |
| Status | Active |
| Nation | Environmental Protection Agency |
| Type | Renovation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Caldwell & Walsh Building Construction Inc at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 030392 |
| Status | Active |
| State | New York |
| Type | Superintendent Of Construction |
- BuildZoom has not verified this license since December, 2023.
Verify this license's status for Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 024861 |
| Status | Active |
| State | New York |
| Type | Superintendent Of Construction |
- BuildZoom has not verified this license since April, 2025.
Verify this license's status for Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 021615 |
| Status | Active |
| State | New York |
| Type | Superintendent Of Construction |
- BuildZoom has not verified this license since May, 2025.
Verify this license's status for Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 025809 |
| Status | Active |
| State | New York |
| Type | Superintendent Of Construction |
- BuildZoom has not verified this license since May, 2025.
Verify this license's status for Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 002929 |
| Status | Active |
| State | New York |
| Type | Gc Safety Registration, Gc Safety Registration, Gc Safety Registration |
- When BuildZoom last verified this license, it had an expiration date of October, 2024. Check the current license status of Caldwell & Walsh Building Construction Inc with the New York City Department of Buildings
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 025417 |
| Status | Inactive |
| State | New York |
| Type | Superintendent Of Construction |
- According to the New York City Department of Buildings, 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 Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | H1842140000 |
| Status | Inactive |
| County | Nassau County |
| Type | Home Improvement Contractors |
- According to the Nassau County Office of Consumer Affairs, 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 Caldwell & Walsh Building Construction Inc at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | Westchester County |
| Type | Home Improvement Contractor |
- According to the Consumer Westchester County, NY, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 13VH09522000 |
| Status | Inactive |
| State | New Jersey |
| Type | Home Improvement Contractor |
- According to the New Jersey Department of Law & Public Safety, 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 Caldwell & Walsh Building Construction Inc at the New Jersey Department of Law & Public Safety.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 021952 |
| Status | Inactive |
| State | New York |
| Type | Superintendent Of Construction |
- According to the New York City Department of Buildings, 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 Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 021951 |
| Status | Inactive |
| State | New York |
| Type | Superintendent Of Construction |
- According to the New York City Department of Buildings, 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 Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 024311 |
| Status | Inactive |
| State | New York |
| Type | Superintendent Of Construction |
- According to the New York City Department of Buildings, 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 Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 026171 |
| Status | Inactive |
| State | New York |
| Type | Superintendent Of Construction |
- According to the New York City Department of Buildings, 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 Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 021953 |
| Status | Inactive |
| State | New York |
| Type | Superintendent Of Construction |
- According to the New York City Department of Buildings, 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 Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 021719 |
| Status | Inactive |
| State | New York |
| Type | Superintendent Of Construction |
- According to the New York City Department of Buildings, 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 Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 021666 |
| Status | Inactive |
| State | New York |
| Type | Superintendent Of Construction |
- According to the New York City Department of Buildings, 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 Caldwell & Walsh Building Construction Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
106
BuildZoom Score
Insured
| Insurer | Travelers Indemnity Compa |
Insured
| Workers Comp Provider | The Phoenix Ins Company |
187
Permits
- Building permit records show that Caldwell & Walsh Building Construction Inc has worked on 187 permitted projects.
Caldwell & Walsh Building Construction Inc Employees
FT
Ferrone Michael T.
WW
W Witek