Foundation repairs, retaining walls, piling systems

West Seattle Retaining Wall

Dochnahl Construction built this timber and piling retaining wall at the top of a hill side in West Seattle.  There had been few small surface land slides over the past couple winters so we helped design and built this wall to save their back yard.  The wall is approx. 12′ tall, 80′ long and is supported with 3″ diameter pipe pilings and 2 rows of tieback anchors. 


Photo of residential retaining wall from distance

View of timber retaining wall under construction

Picture of wall under construction





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Queen Anne Seattle Basement & Bunker Garage

This was a fun project!!  We took an early 1900’s home with a partial 6′ tall basement, created 9′ finished ceilings and a 2 car deep concrete bunker garage.  Nearly 800 yards of dirt was excavated…read more

Renton foundation repair & leveling project

We started a project installing 10 of our 2” diameter pipe pilings to stabilize the corner of a home in Renton that has settled about 3”.  This home is on a bit of a…read more