Pre-Construction Inspections / Surveys
Pre-Blast Inspections / Surveys 

All DOB Monitoring and Inspections

Vibration and Sound Monitoring Solutions

Automatic / Wireless Vibration Monitoring

Horizontal and Vertical Settlement (Optical Monitoring)
Sound and Crack Monitoring

Tilt Monitoring

Dust Monitoring

TI - 88 Compliance
Manual Vibration Monitoring
Well Water Testing
Expert Testimony

HSI Services

New Construction

Demolition / Renovation Projects                

Drilling and Blasting  

Demolition/Renovation Projects

Foundation Excavation and Construction

Rock Hammering

Sheet and Pile Driving and Shoring      

All utilities, Gas Main,  Water, Sewer
Vibratory Compaction      

​General Excavation

Highway Construction and Widening                       

Line Drilling                           
​Rock Quarry Work           

Certified M/WBE / DBE Business

Construction Monitoring Services

                         PROJECTS WE SERVE


ph (800) 225.6913   NYC (917) 795.9021





59 Woodford Road

Scarsdale , New York 10583

New York City

315 S. 4th Street, #2

Brooklyn, 11211

86 Weed Ave, Norwalk
8 Green Hill Road, Manchester


1 Michaels Green, Woburn

New York 

131-47 225th Street , Jamaica

76 Whalen Road, Hopewell Junction


44 Kipling LaneAlbrightsville

Rhode Island

9 Lyndhurst Ave, Providence

Washington, D.C.

712 H Street NE, Unit 879

Horizontal and Vertical Settlement Surveys


​Settlement Monitoring Targets

Here at HSI, we provide comprehensive data reports to track any structural movement (horizontal, vertical). We monitor at sites that require ongoing construction activities (underpinning, excavation or demolition). Our Licensed Land Surveyors will install surveying targets at specific locations on neighboring structures near your construction site.

Data from the surveying equipment goes through a software program that creates a baseline report of the position(s) of the targets. Our high tech equipment will detect vertical and horizontal settlement from the fixed monitoring points which then are recorded for a comparative certified report. These follow up visits to determine if the targets have moved give work teams the necessary data to decide whether to continue excavations or make changes to the plan

Optical Monitoring Survey services are provided on a bi-weekly, weekly, or daily basis. HSI is the most accurate and cost-effective company in this business. Please call for help with this important process. 

​Horizontal and Vertical Movement Surveys are required by the DOB in Manhattan, Bronx, Queens, Brooklyn, and Staten Island.