About TerraFirma

Wall Stabilization Solutions by TerraFirma

Transform your basement or crawlspace into a livable, permitted space.

People renovate their basements for many reasons-to add a bedroom, a wine cellar, a hobby room, or for extra space and storage for your family. With TerraFirma, whether you're just looking to add an egress window to finalize an additional living area in your home, or whether you're still looking at a wet, dirt floor with low ceilings, we can help you gain the space you need.

Projects of this magnitude can be complicated, so it's important to partner with a specialist who can help you navigate every detail and consideration. TerraFirma can take you from an unusable space to a blank slate ready to build your ultimate goal. Our team coordinates everything from design, engineering and permitting, and offers long-term warranties to stand the test of time.

Contact TerraFirma today for a free estimate.

What Wall Stabilization Solutions by TerraFirma Offers You

Basement Digging
  • A foundation in compliance with current building codes
  • Seismically upgraded structure
  • Egress options
  • Design, structural and geotechnical engineering services, and permit coordination
  • Waterproof basement
  • Ready to finish

Let us help you start transforming your basement today!

Scheduling a consultation with a TerraFirma System Design Specialist is the first step to turning your basement or crawlspace into a livable space.

Our in-house team has the resources and expertise to take on any basement project you're considering for your home. We offer free cost estimates for projects in Seattle, Portland, Tacoma and surrounding areas in Oregon and Washington. Contact us today to request yours!

Looking for a price? Get a no cost, no obligation free estimate.

our service area

We serve the following areas

  • Adams
  • Adrian
  • Arock
  • Athena
  • Baker City
  • Bates
  • Bridgeport
  • Brogan
  • Burns
  • Cove
  • Crane
  • Drewsey
  • Durkee
  • Elgin
  • Enterprise
  • Haines
  • Halfway
  • Harper
  • Helix
  • Hereford
  • Huntington
  • Imbler
  • Imnaha
  • Ironside
  • Jamieson
  • Jordan Valley
  • Joseph
  • Juntura
  • La Grande
  • Lostine
  • Meacham
  • Milton Freewater
  • North Powder
  • Nyssa
  • Ontario
  • Oxbow
  • Pendleton
  • Pilot Rock
  • Prairie City
  • Richland
  • Riverside
  • Summerville
  • Sumpter
  • Ukiah
  • Union
  • Unity
  • Vale
  • Wallowa
  • Westfall
  • Weston
Our Locations:

TerraFirma Foundation Systems
761 NE Garden Valley Blvd.
Roseburg, OR 97470
1-541-204-4660


TerraFirma Foundation Systems
13110 SW Wall St
Portland, OR 97223
1-541-229-4049


TerraFirma Foundation Systems
10111 S Tacoma Way D5
Tacoma, WA 98499
1-253-201-1447