LaValley / Middleton Building Supply | a New Hampshire and Vermont lumber, building materials and home improvement center offering professional service and quality lumber, paint, millwork, windows, doors, hardware and more. Manufacturing quality trusses and wall panels locally in NH since 1962.

Protect What Matters with Middleton Building Supply

Looking for trusted Home Improvement Store services in Dover? Middleton Building Supply is your local expert for alarms, surveillance, access control, and more. Whether you're securing your home or business, get help from pros who know how to keep you safe. Fast. Simple. No pressure.

Fast. Easy. Hassle-Free.

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Expert Security Tips & Insights

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Commercial Security: The Essentials Every Business Owner Should Know

June 15th, 2025

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Protect What Matters with Middleton Building Supply

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