Quality You Can Trust
Security You Deserve
Expert door installation, hardware, glass, and locksmith services for residential and commercial properties throughout New Hampshire.
Our Services
Comprehensive door, hardware, and locksmith solutions for every need
Commercial Services
Professional door, frame, and hardware solutions for businesses. From automatic doors to master key systems, we have you covered.
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Residential Services
Enhance your home's security and style with our expert window and door installation, lock upgrades, and hardware solutions.
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Locksmith Services
Complete locksmith solutions including rekeying, key cutting, deadbolt installation, and electronic lock upgrades.
Learn MoreWhy Choose Best Door & Lock?
Your trusted partner for all door, hardware, and security needs
Expert Installation
Our certified technicians deliver professional installation with attention to detail and quality craftsmanship.
Wide Product Selection
We work with 30+ leading manufacturers to provide the best doors, hardware, and security solutions.
Fire Door Certified
ALOA and AFDI certified inspectors ensure your fire doors meet NFPA 80 compliance standards.
One-Stop Shop
From doors and frames to hardware and locksmith services - make one call for all your needs.
Local Expertise
Proudly serving New Hampshire communities with personalized service and fast response times.
Quality Guaranteed
We stand behind our work with quality materials and professional installation you can trust.
Fire Door Inspection Services
Best Door & Lock provides comprehensive fire door inspection services to ensure your building meets NFPA 80 and local AHJ requirements.
Our certified inspectors conduct thorough 13-point visual and mechanical checks, helping you maintain compliance and protect your building occupants.
We are proud to have ALOA Fire Door Inspection certified and AFDI certified professionals on staff.
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Ready to Get Started?
Contact us today for a free consultation on your door, hardware, or security needs.
Contact Us TodayOur Trusted Partners
We work with industry-leading manufacturers to bring you the best products
Service Area
Proudly serving communities throughout New Hampshire