€ n large commercial buildings, excavation next to an existing foundation is
€ a very touchy (and expensive) endeavor, and involves some serious inspection
€ (before and after) and monitoring of the existing structure. I can't imagine
€ it being such a casual job on a residence but I could be wrong.
In my experience, all here in Seattle, with commercial the issue is the
duty to maintain horizontal support to an adjacent property- the
doctrine called "late support".
In my experience with residential, the units are usually free standing,
far enough apart and shallow enough that there isn't significant danger
of removing horizontal support.
Obviously, exceptions occur on hills and in medium density multi
family, and in those cases your statements are absolutely correct, but
for the most part, in many Seattle neighborhoods, you aren't going to
disturb your neighbor's land by removing your foundation.
The process is, therefore, quite a bit more casual after an initial
Lyle B. Harwood, President
Phoenix Homes, Inc.
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