Cunningham Security · Portsmouth, NH
Security systems in Portsmouth, NH
Security systems for Portsmouth and the Seacoast, with local service behind them.
Cunningham Security Systems designs, installs, monitors and services home and business security systems, commercial fire alarms, cameras and access control from our Portsmouth operations and service office.
New systems · Upgrades · Monitoring · Local service
Local office · ongoing support
A Portsmouth point of contact, from installation through service.
Call our Portsmouth team to discuss a new system, an existing alarm, a camera upgrade or the requirements for a commercial property. We support Portsmouth, the New Hampshire Seacoast and Southern New Hampshire with systems designed for the building and the people using it.
Our Commerce Way location is an operations and service office with visits by appointment. Employees work from the office and in the field, so please arrange a visit rather than assuming someone will be available for a walk-in.
Cunningham has served New England since 1983 and is owned by two generations of the Major family. Local field service connects that regional experience to the needs of your property.
Need help with your current system? Request service or call our Portsmouth number. For urgent service needs, call rather than waiting for an online form response.
Find our Portsmouth office
Our office is in Suite 200. Visits are by appointment; please call before coming in.
One company for the whole property
Security, fire alarms, cameras & access control.
Start with what you need to protect. We can design a new system, assess equipment already in place or coordinate several services for the same property.
Home security systems
Door and window protection, motion detection, app access and compatible environmental sensors, selected around your home and routine.
Explore home securityCommercial security
Intrusion alarms and practical controls for employee entrances, tenant spaces, opening and closing procedures, and after-hours activity.
Explore business securityCommercial fire alarms
Design, installation, monitoring, repairs and upgrades, with permitting and acceptance requirements addressed for the project.
Portsmouth fire alarm servicesSecurity cameras
Useful views of entrances, driveways, shared areas and deliveries, with recording and remote access matched to the purpose.
Explore camera systemsAccess control
Manage doors, credentials and schedules. Coordinate hardware and any required fire alarm interfaces as part of the design.
Explore access controlMonitoring & inspections
24/7 professional alarm monitoring, plus scheduled commercial fire alarm testing, deficiency reporting and follow-up service.
NH alarm monitoringFire alarm inspections
Portsmouth & the surrounding area
Protection that fits Seacoast buildings and daily life.
Downtown buildings & established homes
In older buildings, device placement and cable routes deserve as much thought as equipment selection. We review existing wiring, finished surfaces, entrances and shared areas before recommending a wired, wireless or hybrid system.
Portsmouth requires Historic District Commission approval for certain exterior changes within its Historic District. Before planning exterior cameras, visible conduit or changes to entrance hardware, confirm whether the proposed work needs review. City Historic District guidance.
Offices, retail & managed properties
Employee access, delivery entrances, tenant turnover and after-hours activity shape the design. Coordinate intrusion detection, cameras and door access so managers have useful information and staff have a system they can operate consistently.
Primary residences & second homes
Compatible app access, water-leak detection and low-temperature alerts can help you keep track of a home while away. We plan who receives alerts and who can respond locally, as well as the sensors and communications the property needs.
Planning commercial fire alarm work? Portsmouth requires permits and inspections for new systems and alterations such as panel replacement or device relocation. Its published rules also require electronic plans. We help coordinate the project’s approval path before installation. Portsmouth fire protection rules.
Local coverage
Portsmouth, the Seacoast & Southern New Hampshire.
Our Portsmouth operation supports the Seacoast and Southern New Hampshire. Tell us the property address and the type of system you need; we will route the request to the appropriate local team.
For a property elsewhere in New Hampshire or across the Maine border, consult our regional service areas or call. Assignments depend on project scope, licensing, system expertise and service availability.
What happens next
A clear path from question to quote.
- Tell us about the property.Share the address, property type, existing equipment and the problem or improvement you have in mind.
- Review the practical options.We determine the next step, which may include a site visit, equipment review or a discussion of project plans.
- Receive a written proposal.Review the equipment, installation, monitoring and ongoing service included before deciding.
Before you call
Portsmouth office questions.
Where is Cunningham Security located in Portsmouth?
Our Portsmouth operations and service office is at 170 Commerce Way, Suite 200, Portsmouth, NH 03801. Call (603) 431-8700 to arrange an appointment before visiting.
Can I visit the Portsmouth office without an appointment?
Please make an appointment first. The office follows a hybrid staffing schedule, with employees working from the office and in the field. Calling ahead ensures that someone is available to help with your request.
Do you serve homeowners as well as businesses on the Seacoast?
Yes. We support home security, cameras, compatible environmental sensors and monitoring, as well as commercial intrusion alarms, access control, cameras and fire alarm systems. The design depends on the property and the service requested.
Can you monitor an existing alarm in Portsmouth?
In many cases. We check the panel, communicator, programming access and equipment condition before proposing a takeover. Some systems can be reused, while others need an upgrade or replacement.
Can you help protect a second home while I am away?
Yes. Depending on the system and service plan, options can include remote alarm access, compatible cameras, water-leak sensors and low-temperature alerts. We also review alert recipients and local response contacts so the system supports your plan for the property.
Are monitoring and emergency service available outside office visits?
Professionally monitored accounts have alarm signals handled 24/7. Cunningham also has on-call technicians for emergency service requests. These services are separate from Portsmouth office visits, which are by appointment; call to discuss an urgent service need.
Talk with your local team
Let’s plan the right protection for your property.
Tell our Portsmouth team what you need. We’ll help identify a practical next step for your home, business or managed building.
Existing customer? Request service · View all Cunningham offices
Local requirements reviewed September 2026. Requirements depend on the property and project; the local authority determines the necessary approvals.
