Alaska Real Estate Tip: Understanding Permafrost and Its Impact on Your Property

By
March 20, 2025

When buying real estate in Alaska, one unique factor to consider is permafrost.

A Tip for Alaskan Real Estate Buyers

When buying real estate in Alaska, one unique factor to consider is permafrost—a layer of frozen soil that can cause major challenges for homeowners. If you're looking at properties in interior or northern Alaska, permafrost could impact everything from home foundations to landscaping.

Why Permafrost Matters

Permafrost is frozen ground that remains below 32°F for at least two years. When it melts, the ground can shift, causing structural damage to homes, roads, and utilities.

How to Identify Permafrost Areas

Before purchasing land or a home, check for signs of permafrost:

  • Uneven ground – Wavy terrain or depressions can indicate melting permafrost.
  • Tilted trees – Known as “drunken forests,” leaning trees often suggest unstable ground.
  • Soil composition – Silty or peat-heavy soil tends to hold permafrost longer than gravelly or rocky ground.

Buying a Home on Permafrost? Here’s What to Do

  • Get a soil test – A geotechnical survey can determine if permafrost is present.
  • Choose the right foundation – Pilings, adjustable post-and-pad foundations, or insulated raft foundations help prevent damage.
  • Monitor land changes – If the property already has a home, look for signs of shifting, such as cracked walls or misaligned doors/windows.

While permafrost can be a challenge, it doesn’t have to be a dealbreaker. Working with an experienced Alaskan real estate professional ensures you find a property that’s built to last in this unique environment.

For more information or guidance through the buying process, give Alaskan Properties a call at (907) 694-3434.