Smarter Integration
for Critical Systems
AV, Security, and Cabling Solutions Built to Spec
Years of Certified Expertise
0 +
Your Low-Voltage Integration Partner
Greenstone Associates provides fully integrated solutions in AV, security, structured cabling, and IT infrastructure. We deliver scalable, code-compliant systems with fast response times and local accountability. Trusted by commercial, healthcare, education, and government clients.
About us
About us
Technical Expertise. Local Accountability. National Reach.

Greenstone Associates is a trusted low-voltage systems integrator based in Wisconsin, delivering end-to-end solutions in audio/visual, electronic security, structured cabling, and IT infrastructure. With a team of certified technicians and decades of field experience, we help businesses and institutions build smarter, safer, and more connected environments.

From project design to final install, we manage every detail with precision, ensuring code compliance, long-term reliability, and scalable performance. Our solutions are tailored to each facility’s unique needs, whether it’s a single site or a multi-location rollout.

We proudly serve clients across commercial, industrial, educational, healthcare, and government sectors locally and nationwide.
Core Services
Core Services

Greenstone Associates delivers secure, scalable, and custom low-voltage solutions for a wide range of industries. Our team understands the unique challenges and compliance requirements of each sector and builds systems that meet them with precision.

Integrated Low Voltage Solutions

Greenstone provides reliable and scalable systems in security, AV, and structured cabling. Our services are trusted across commercial, healthcare, education, and government facilities.

Security & Access
Control
Surveillance systems, intrusion detection, biometric or card based access control, entry management, and 24/7 monitoring.
Structured Cabling & IT Infrastructure

Fiber and copper cabling, equipment racks, server room setup, patch panels, and wireless access point installation.

Commercial AV Integration

AV systems for boardrooms and classrooms, digital signage, paging, intercoms, touchless controls, and centralized AV management.

Industries Served
Industries Served
Greenstone Associates delivers secure, scalable, and custom low-voltage solutions for a wide range of industries. Our team understands the unique challenges and compliance requirements of each sector and builds systems that meet them with precision.
Commercial real estate
We support office buildings, retail centers, and corporate headquarters by implementing intelligent AV systems, structured cabling, and comprehensive security infrastructure. Whether it’s enhancing tenant experience through digital signage or streamlining building-wide access control, we create solutions that help property managers maintain secure and efficient operations.
Education
We design and install integrated systems for K-12 schools, universities, and technical colleges that enhance learning environments and campus safety. Our solutions include classroom AV, paging and intercom systems, campus-wide surveillance, and network infrastructure that supports everything from e-learning to facility management systems.
Healthcare
Our team works with hospitals, surgical centers, medical offices, and laboratories to deploy systems that prioritize safety, compliance, and continuous uptime. From HIPAA-compliant access control to surveillance in restricted areas and network infrastructure that supports digital health systems, we ensure healthcare environments are protected and connected.
Manufacturing and warehouses
Greenstone supports warehouses, production lines, and distribution centers with reliable infrastructure that holds up in complex, high-traffic environments. We provide full coverage video surveillance, ruggedized cabling for large facilities, and wireless networking to ensure connectivity across operations, logistics, and administrative teams.
Government Offices
We partner with local and federal agencies to deliver reliable technology infrastructure in mission-critical environments. Our work includes security systems for public buildings, access control for sensitive areas, structured cabling in data centers, and audiovisual systems for council chambers and public spaces.
Hospitality
Hotels, resorts, and event venues require seamless technology that works quietly in the background while delivering high-impact guest experiences. We implement AV for lobbies and conference rooms, robust Wi-Fi networks for guests, centralized control systems for staff, and secure access for restricted service areas.
Network and franchise clients
We support retail chains, healthcare networks, and franchise groups with standardized AV, security, and IT systems across all locations. Our centralized approach ensures consistent performance, simplified management, and fast rollout for growing operations.
Our Edge

Certified In-House Team

All work is performed by our own NICET, BICSI, and OSHA-compliant technicians ensuring safety, expertise, and accountability from start to finish.

Complete Project Delivery

We handle everything from design and engineering to installation and ongoing support delivering a smooth and reliable experience.

Tailored and Scalable Systems

Each solution is designed from scratch to fit your needs while remaining fully code-compliant and ready to grow with your operations.

Local Presence Nationwide Service

We are based in Wisconsin and support clients across the country combining responsive local support with consistent national coverage.

What Sets Us Apart
Our team brings together certified specialists, personalized service, and full-cycle project delivery. Every system is built to meet exact requirements with a focus on quality, compliance, and long-term performance. We never outsource and always stay responsive.
At Greenstone Associates we believe that precision and accountability are just as important as technical expertise. That is why every project is handled by in-house professionals who understand your environment, your goals, and your deadlines. From the first consultation to post-installation support, we stay involved and available. We take pride in building systems that are fully compliant, scalable, and tailored to your needs while offering fast response times and a level of service you can rely on no matter the complexity of the job.
What Clients Gain
What Clients Gain
We focus on delivering results that matter to your business. By managing each project with in-house expertise and proven processes, we ensure every client gets dependable systems, clear communication, and peace of mind from day one.

Faster Delivery and Fewer Delays

Working with our in-house team means streamlined timelines and full accountability at every stage.

Future-Ready Systems

All solutions are designed to scale with your business while meeting today’s standards for performance and compliance.

One Trusted Partner

From consultation to installation and long-term support, we stay with you throughout the entire lifecycle of the project.

Transparent Process

You get clear estimates, honest timelines, and no surprises just reliable service and results you can count on.

Projects
Projects
Real world installations that show the quality, scale, and precision of our work. From complex AV builds to critical security upgrades, each project reflects our commitment to delivering results that last.
Testimonials
Frequently Asked Questions
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Service area
Service area
Real world installations that show the quality, scale, and precision of our work. From complex AV builds to critical security upgrades, each project reflects our commitment to delivering results that last.

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