How to Build an Underground Safety Deposit Box in Your Backyard

How to Become a Precious Metals Dealer
Written By
Rachel Steffan
Rachel Steffan
Published: Oct 27, 2010
Updated: Nov 20, 2021
3 minute read

In such a situation, burying your valuables in the backyard is a viable alternative, but you must take precautions to protect your things from moisture, insects and other things that might cause damage or degradation over time. PVC pipe capsules can protect your buried valuables inexpensively.

Things You Will Need

  • 6-inch PVC pipe
  • Hacksaw
  • 2 round PVC end caps
  • Steel wool or fine sandpaper
  • PVC pipe cement
  • Vacuum sealer
  • Vacuum bags
  • Desiccant packets
  • Auger-style post hole digger
  • Scrap metal
  • Site marker
  1. Cut an 18-inch or shorter length of 6-inch PVC pipe with a hacksaw. Make the length of pipe as small as you can while still accommodating the valuables you wish to store.

  2. Rub the outside ends of the PVC pipe and the inside of two round PVC cap ends with steel wool or fine sandpaper. This will allow a secure bond when you seal the ends with PVC pipe cement.

  3. Apply a generous amount of PVC pipe cement to the pipe end and the inside of one cap. Seal the end cap on the PVC pipe and allow it to dry according to the pipe cement manufacturer's directions.

  4. Seal your valuables in vacuum bags with a packet of desiccant. Inexpensive vacuum hand pumps that work with special resealable bags are available from most department stores. Hardware and sporting good stores sell desiccant.

  5. Pack your vacuum-sealed valuables in the PVC pipe. Fill the pipe tightly to avoid large air spaces. Add additional desiccant packets to the pipe.

  6. Apply PVC pipe cement to the open end of the pipe and the inside of the remaining end cap. Seal the PVC capsule and allow the cement to dry.

  7. Dig a hole at least 36 inches deep and slightly larger in diameter than the PVC pipe. An auger-style post hole digger works well.

  8. Place the PVC capsule in the bottom of the hole. Fill the hole completely and stamp it down with your feet or a piece of scrap wood.

  9. Mark the site of the hole with something you will not forget. Plant a perennial over the site or place a large rock next to it.

The Drip Cap

  • Keeping valuables inside your house is a risk unless you have a very resilient safe or an advanced home security system.
  • In such a situation, burying your valuables in the backyard is a viable alternative, but you must take precautions to protect your things from moisture, insects and other things that might cause damage or degradation over time.
  • Seal the end cap on the PVC pipe and allow it to dry according to the pipe cement manufacturer's directions.
  • Pack your vacuum-sealed valuables in the PVC pipe.
  • Fill the hole completely and stamp it down with your feet or a piece of scrap wood.

Photo Credits

Jose Luis Pelaez/Photodisc/Getty Images

Jose Luis Pelaez/Photodisc/Getty Images

Rachel Steffan

Based in central Missouri, Rachel Steffan has been writing since 2005. She has contributed to several online publications, specializing in sustainable agriculture, food, health and nutrition. Steffan holds a Bachelor of Science in…

Sponsored
HomeSteady Logo

HomeSteady is the ultimate guide for all your household needs, from cleaning and HVAC to electrical, DIY and maintenance.

Property of TechnologyAdvice. © 2026 TechnologyAdvice. All Rights Reserved

Advertiser Disclosure: Some of the products that appear on this site are from companies from which TechnologyAdvice receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. TechnologyAdvice does not include all companies or all types of products available in the marketplace.