MRSC’s opinion is that building plans for private buildings submitted to a local government are likely not exempt. However, three exemptions/prohibitions to be considered when handling a request for building plans are copyright protections under federal law, trade secrets, and RCW 42.56.270(1), which exempts:
[v]aluable formulae, designs, drawings, computer source code or object code, and research data obtained by any agency within five years of the request for disclosure when disclosure would produce private gain and public loss.
With regard to copyright protections, rather than assert an owner’s potential copyright-protected records, third party notice under RCW 42.56.540 could be a better approach. With regard to RCW 42.56.270, it is not clear what the “public loss” would be if an agency disclosed building plans; therefore, third party notice is a better approach in this type of situation. See Lindberg v. County of Kitsap (1997).
Some architects or engineers may claim their plans should be exempt under RCW 42.56.270(11) as proprietary data or under the Uniform Trade Secrets Act (chapter 19.108 RCW) and mark their records as such. This argument is best made by those with an interest in protecting the trade secret so, again, third party notice is the most risk-adverse approach in this circumstance.
However, if the building plans are for certain public buildings, there may be a basis to withhold the plans under the security exemptions in RCW 42.56.420. Specifically, the exemption may apply to withhold building plans for correctional and juvenile facilities, secure treatment facilities, and schools, to the extent such plans are part of vulnerability assessment and emergency plans under RCW 42.56.420(2) and (3). To the extent copies of building plans are also maintained as part of the records to support responses to criminal terrorist acts, RCW 42.56.420(1) should apply. Likewise, any maps or plans that are part of transportation security or emergency preparedness plans may be exempt under RCW 42.56.420(5).