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The 3/4/5 rule in deck building is a structural guideline for attaching a ledger board to a house. Specifically, it refers to the spacing and placement of bolts or lag screws that secure the ledger. The rule states that fasteners should be placed no more than 3 inches from the top of the ledger, 4 inches from the bottom, and 5 inches from each end. This spacing ensures proper load distribution and prevents the ledger from pulling away from the house. For any deck project in San Jose, following this rule is critical for safety and code compliance. At Lecut Construction, we always adhere to this standard to ensure a secure and durable connection between the deck and the home.
The best time of year to build a deck in San Jose, Santa Clara, and Sunnyvale is typically during the late spring or early fall. These seasons offer mild temperatures and lower humidity, which are ideal for concrete footings and wood installation. Summer can be very hot, potentially causing materials like composite or pressure-treated lumber to expand or warp. Winter rains can delay curing and create muddy conditions. For a durable and long-lasting result, schedule your project when daytime highs are between 60 and 80 degrees Fahrenheit. At Lecut Construction, we advise planning your deck build for these optimal windows to ensure proper material handling and a stable foundation.
In California, deck construction requirements are governed by the California Building Code (CBC) and local municipal codes. For homeowners in San Jose, Santa Clara, and Sunnyvale, a permit is typically required for any deck attached to a house, especially if it is over 30 inches above grade. Key requirements include proper footings below the frost line, use of galvanized or stainless steel fasteners for seismic and weather resistance, and guardrails of at least 42 inches high if the deck is 30 inches or more off the ground. The ledger board must be properly flashed to prevent water intrusion into the house. For a full breakdown of local rules, please read our internal article titled San Jose Home Remodeling Permits: The Complete 2026 Guide for Homeowners. Lecut Construction always recommends consulting with a licensed contractor to ensure your deck meets all safety and code standards.