how to lower a deck by hand

Lower Your Deck by Hand: Step-by-Step Guide

By Thomas RodriguezJanuary 15, 2026

Lowering a deck by hand can be a challenging yet rewarding task. It requires careful planning, the right tools, and a good understanding of the process. This guide will walk you through the steps to lower a deck by hand, ensuring safety and structural integrity.

Before you start, it's crucial to assess the current state of your deck. Check for any signs of decay, rot, or instability. If your deck is in poor condition, it might be safer and more efficient to hire a professional. Once you've confirmed that your deck is sturdy enough for modification, gather your tools and materials.

Preparation and Planning

The first step in lowering a deck by hand is planning. Measure the height of your deck from the ground. Decide how much you want to lower it, ensuring you maintain a minimum height of 36 inches for safety and building code compliance.

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Gather your tools and materials. You'll need a tape measure, a level, a circular saw, a drill, a hammer, nails, screws, joist hangers, and blocking. Also, ensure you have safety gear, including gloves, safety glasses, and a hard hat.

Preparing the Site

Before you start, clear the area around the deck. Remove any plants, furniture, or debris that could hinder your work or pose a safety risk. If your deck is attached to your house, you may need to temporarily remove any siding or trim that could be damaged during the process.

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Next, mark the new height of your deck on the posts using a level and a pencil. This will serve as your guide as you lower the deck.

Removing the Deck Boards

Start by removing the deck boards. Use a pry bar to lift the boards off the joists, then remove the nails or screws holding them in place. Number the boards as you remove them to ensure they go back in the correct order.

Once all the boards are removed, you can start lowering the deck frame. Begin by removing the joist hangers from the top of the posts. You may need to use a reciprocating saw or a jigsaw to cut through the nails or screws holding them in place.

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Lowering the Deck Frame

With the joist hangers removed, the deck frame should be resting on the posts. Carefully lift the frame and lower it to the new height you marked earlier. You may need help with this step, as the frame can be heavy and unwieldy.

Once the frame is at the new height, use a level to ensure it's even and square. Make any necessary adjustments before moving on to the next step.

Installing Joist Hangers

With the frame in place, it's time to install the new joist hangers. Measure and cut the joist hangers to fit the new height of your deck. Install them on the posts, ensuring they're level and square.

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Use a drill to pilot holes through the joist hangers and into the posts. Then, use galvanized nails or screws to secure the hangers in place. Ensure they're secure and won't shift or move over time.

Reinstalling the Deck Boards

Now that the frame is secure, you can start reinstalling the deck boards. Use the numbers you marked earlier to ensure they go back in the correct order. Start from one corner and work your way across the deck.

Use a circular saw to cut the boards to fit the new dimensions of your deck. Ensure the cuts are clean and smooth to prevent splintering. Secure the boards in place using nails or screws, ensuring they're evenly spaced and secure.

Finishing Touches

With the deck boards reinstalled, it's time to make any final adjustments. Use a level to ensure the deck is even and square. Tighten any loose screws or nails, and fill any holes with wood filler.

Once the wood filler is dry, sand any rough edges or surfaces. Then, apply a sealant or stain to protect the wood and enhance its appearance.

Lowering a deck by hand can be a complex task, but with careful planning and the right tools, it's achievable. Always prioritize safety, and don't hesitate to call a professional if you're unsure about any aspect of the process. Now that your deck is lower, enjoy your newly expanded outdoor space!