Rooms Under
Existing Homes
Avalon builds waterproof rooms under existing homes.

The following two photos show a before and after. Along the wall on the right, Avalon employed shoring techniques that allowed the new retaining wall below to align flush with the existing stem wall above.
The completed basement.
We can put a basement under an existing house.

In this example, we installed four 3.5" diameter round shaft helix piers to support the interior of a two-story one hundred year-old Victorian, then excavated around the helix piers.

These heavy duty helix piers have ample lateral strength to stand without lateral soil support.
Avalon Structural, Inc.
181 Ridgeview Drive
Aptos, CA 95003
Phone: (831) 479-4389
Fax: (831) 479-0328
Email: roger@avalonstructural.com
CA License 677116
Classifications:  B, C-8