Dahlcore Security Guard Services provides licensed, insured construction site security guards across all five NYC boroughs, Long Island, and New York State — available 24/7 for new deployments, overnight coverage, and multi-phase project protection. Our guards are licensed under New York State’s Security Guard Act (Article 7-A) and trained in access control, perimeter patrol, incident documentation, site-safety awareness, and fire watch procedures. Since 2018, developers, general contractors, and property owners across Manhattan, Brooklyn, Queens, the Bronx, and Staten Island have relied on Dahlcore to protect active job sites from theft, vandalism, trespassing, and after-hours liability.
Why New York Construction Sites Need Professional Security
Construction sites are among the highest-risk environments in New York. Copper wiring, generators, power tools, and heavy equipment are targeted overnight and on weekends when crews are off-site — and a single theft or vandalism event can trigger project delays, insurance claims, and stop-work exposure. A visible, documented guard presence is the deterrent fences and cameras alone can’t provide.
Risks Dahlcore Helps New York Job Sites Manage
- Material theft — copper, lumber, rebar, tools, and fuel taken after hours
- Vandalism and arson — open, low-lit sites are frequent targets
- Trespasser liability — injury exposure when an unauthorized person enters
- Access & documentation gaps — DOB and OSHA expect controlled access and incident records
- Project delays — theft or vandalism can halt work for days
- After-hours exposure — the highest-risk window is nights and weekends

The site doesn’t sleep — neither do we
Most theft happens after 6 p.m. and on weekends. Dahlcore’s overnight patrols and access logs turn your most exposed hours into your most documented ones.
Why Contractors & Developers Choose Dahlcore
Licensed, construction-ready, and reachable around the clock — Dahlcore protects active New York job sites from the fence line in.
NYS Article 7-A Licensed & Insured
Every guard on a New York site is registered under the Security Guard Act (General Business Law Article 7-A) with the NY Department of State and meets the state’s mandatory training — 8-hour pre-assignment, 16-hour on-the-job, and 8-hour annual in-service. Dahlcore is fully insured; certificates of insurance are available for GC and owner requirements.
Veteran-Owned, Held to Higher Standards
Dahlcore is veteran-owned and operated, and the owner personally manages guards in the office and in the field. Officers are held to law-enforcement and military standards, and many bring backgrounds in the U.S. military and law enforcement.
Construction-Specific & Site-Safety Aware
Guards receive site-specific orientation before their first shift — access-control procedures, material storage locations, emergency contacts, and incident-documentation standards — with site-safety awareness for working around active work zones.
Rapid, Scalable Deployment
Dahlcore can typically assess a new site and begin coverage within 24–48 hours, subject to availability, and scale from a single overnight guard to a multi-guard team across access points as your project phases change. A supervisor is reachable 24/7.
What Dahlcore Provides On-Site
How Dahlcore Secures Your Construction Site
Every engagement starts with a site walk and is built around your project phase, crew schedule, and specific vulnerabilities — never a generic template.
Site Walk & Risk Assessment
We review entry points, storage areas, fencing and lighting, crew and delivery schedules, and the highest-risk windows for your site.
Coverage Plan & Post Orders
We recommend armed or unarmed coverage, shift structure, patrol routes, and access-control procedures — written into site-specific post orders.
Guard Deployment
Trained, licensed guards are posted with site-specific orientation, verifying workers, vendors, and deliveries against your authorized-personnel list.
Patrols, Access Logs & Response
Guards patrol the perimeter and storage areas, maintain timestamped logs, and contact site managers, NYPD, FDNY, or EMS as incidents require.
Reporting & Adjustment
Shift and incident reports are delivered to site management, and coverage is adjusted as your project phases and risks change.
Every delivery, worker, and gate — logged
Controlled access and timestamped logs don’t just stop theft — they give you the documentation DOB, OSHA, and your insurer expect when something goes wrong.

What Shapes Your Site Security Plan
Dahlcore scopes every construction assignment to the site and the phase. These are the factors that shape the plan.
1. Guards & Access Points
Site size, number of gates and access points, and value on-site drive how many guards and posts you need.
2. Shift Schedule
Overnight-only, weekends-only, holiday coverage, or continuous 24/7 staffing — matched to your crew calendar and risk windows.
3. Armed or Unarmed
Unarmed guards cover general access and overnight oversight; armed personnel are available for high-value or high-risk sites after assessment.
4. Project Phase
Excavation, structure, and finishing each carry different exposures — coverage adjusts as the build progresses.
5. Technology & Documentation
Pairing guards with CCTV or Virtual Guard monitoring, plus the access logs and incident reporting your team and insurer require.
Construction Site Security FAQ
Clear answers for New York developers, general contractors, and property owners. For anything not covered here, call 212-208-0900.
What do construction site security guards do during a shift?
Dahlcore guards verify workers and vendors at entry points, maintain a timestamped visitor and delivery log, conduct scheduled perimeter patrols, check fencing and lighting, monitor material storage, document incidents, and communicate directly with site supervisors. Duties are customized to the site layout, project phase, and risk level from the initial assessment.
How quickly can Dahlcore start construction site coverage in New York?
For most New York sites, Dahlcore can complete an assessment and begin coverage within 24 to 48 hours of initial contact, subject to availability. Same-day emergency coverage is evaluated case by case. Call 212-208-0900 to confirm availability for your project.
Do New York construction sites need guards after hours?
Yes. Most construction theft, vandalism, and trespassing in New York happens after crews leave — typically between 6 p.m. and 6 a.m. on weekdays and throughout weekends. After-hours guards monitor gates, patrol storage areas, document activity, and contact site managers or emergency responders when needed.
Are Dahlcore’s guards licensed in New York State?
Yes. All guards on New York construction sites are registered under the Security Guard Act (General Business Law Article 7-A) through the NY Department of State, which requires a background check, fingerprinting, and approved training. Dahlcore is fully insured; certificates of insurance are available on request.
Can construction site guards work alongside CCTV and remote monitoring?
Yes. Dahlcore can pair on-site guards with CCTV and Virtual Guard remote monitoring for layered coverage — visible deterrence plus a documented surveillance record and faster incident response.
Can we request overnight or weekend-only coverage?
Yes. Dahlcore tailors shift schedules to your project calendar — nights-only, weekends-only, holiday coverage, or continuous 24/7 staffing — and adjusts as project phases change.
Does Dahlcore provide fire watch for construction sites?
Yes. For sites with hot work, impaired sprinkler systems, or specific DOB permit conditions, Dahlcore provides FDNY-compliant fire watch guards and Fire Life Safety Director (FLSD) support for qualifying sites.
What determines the scope of a construction security assignment?
Scope depends on the number of guards and access points, shift schedule, armed or unarmed coverage, project phase, and documentation needs. Dahlcore provides a written coverage recommendation after a site walk — call 212-208-0900 or email Ian.Dahlberg@Dahlcore.com.
What New York Contractors Say About Dahlcore
Below are example reviews — replace them with real feedback from your Google Business Profile and link each to its source.
“Their guards showed up on time every shift, and the incident reports were detailed enough that our insurer accepted them without question.”
“The access log they keep has been invaluable for our DOB compliance documentation, and the site has been quiet since they arrived.”
“Responded to our urgent request fast and had a licensed guard on our Manhattan site the same evening.”
Protect Your New York Job Site
Contact Dahlcore for a construction site assessment or rapid deployment. Our team responds promptly — typically within one business day, and right away for urgent needs. Share your site address, project phase, coverage hours, and access points.
Direct Contact
212-208-0900Call or text for site coverage
Office Hours: 8:00 AM – 8:00 PM · Guard dispatch available 24/7
Office Locations
1110 South Avenue, Staten Island, NY 10314
250 Park Avenue, New York, NY 10177

