What is "substantial development?"
Substantial development is defined in
"Substantial development" shall mean any development of
which the total cost or fair market value exceeds five
thousand dollars, or any development which materially
interferes with the normal public use of the water or
shorelines of the state. The dollar threshold established in
this subsection (3)(e) must be adjusted for inflation by the
office of financial management every five years, beginning
July 1, 2007, based upon changes in the consumer price index
during that time period. "Consumer price index" means, for
any calendar year, that year's annual average consumer price
index, Seattle, Washington area, for urban wage earners and
clerical workers, all items, compiled by the bureau of labor
and statistics, United States department of labor. The
office of financial management must calculate the new dollar
threshold and transmit it to the office of the code reviser
for publication in the Washington State Register at least
one month before the new dollar threshold is to take effect.
The following shall not be considered substantial
developments for the purpose of this chapter:
On September 1, 2007 the substantial development threshold
was increased to $5,718. On September 15, 2012 it was increased
Please note that various kinds of development are exempt from
the definition of "substantial development". These exemptions
are scattered throughout RCW 90.58 and may be changed by the
legislature at any time.
For more information
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