Quality You Can Trust
Security You Deserve
Best Door & Lock
Commercial
We understand the unique needs of businesses and provide tailored recommendations for locksmithing, commercial doors, windows, and security solutions.
Residential
Best Door and Lock helps residential customers enhance the comfort, security, and beauty of their homes through expert door, window, and lock services.
Professional
Window & Door Service
With decades of experience, Best Door & Lock has the expertise to ensure your project is completed on time with expert craftmanship.
Expert Installation
Our certified technicians ensure a flawless fit and finish for your doors, windows, and hardware.
Your Choice
Your Style
Explore our extensive selection of manufacturers and products. We carry the top brands of door, hardware, and more.
Get Started Today
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Commercial
Contract Services
Door Installation
Update your opening with a new door and frame or update an existing door opening with new hardware.
Glass Work
Transform your business with our expert commercial glass installation, creating a modern, functional, and beautiful space.
Keying
Maintain control while granting access to specific areas with a master key system, ideal for businesses with multiple levels of access.
Interchangeable Cores
For property managers, ICs streamline lock changes during tenant turnover, improving efficiency.
Glass Replacement
Maximize energy efficiency with our high-quality glass replacement services.
Storefront
Enhance the visual appeal and security of your storefront with professional storefront glazing services.
Best Door & Lock offers comprehensive solutions. This one-stop shop approach saves property managers and facility managers valuable time, ensuring their doors and windows are handled by a single, trusted team.
What Can We Do For Your Business?
Door Service
Automatic Doors
Window Repair
Locksmithing
Fire Doors
Fire Door Inspections
Fire doors are essential for building safety, preventing fire spread and aiding evacuation. Best Door & Lock ensures compliance with fire safety regulations, such as NFPA 80 and NFPA 101, for property owners and managers.
Intertek Qualified Personnel (IQP)
Best Door & Lock is the exclusive provider of Intertek Qualified Personnel (IQP) for raceway installations in New Hampshire. This commitment to safety ensures that all fire door installations and modifications meet the highest industry standards, guaranteeing optimal performance in emergencies.
Bringing Your Vision to Life
Beautiful Door and Glass Installations
Residential
Services
Vinyl Replacement Windows
Breathe new life into your home with energy-efficient vinyl replacement windows. Enjoy a quieter and more comfortable interior with improved insulation and reduced drafts.
Door Replacement
Give your home a beautiful new entrance with a secure and stylish door replacement from Best Door and Lock. We offer a variety of styles to match your taste and budget.
Lock Rekeying
Enhance your security and peace of mind with lock rekeying by Best Door and Lock. Our experts can quickly rekey your locks to fit a new key, ensuring only authorized individuals have access.
Key Cutting
Never get locked out again! Best Door and Lock offers fast and convenient key cutting services. We can copy most types of keys, so you'll always have a spare on hand.
Deadbolt Installation
Increase your home's security with a deadbolt installation from Best Door and Lock. Deadbolts add an extra layer of protection against forced entry, giving you and your family peace of mind.
Electronic Upgrades
Take control of your home's entryway with an electronic upgrade from Best Door and Lock. We offer a variety of electronic lock options.
Installation
Do you need flawless door and window installations? Our certified technicians ensure a perfect fit and finish, maximizing security, efficiency, and curb appeal for your property.