Homes for Sale Under 400K in King County WA

Based on information submitted to the MLS GRID as of 2026-05-31 05:54:25 PDT. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. IDX information is provided exclusively for consumers’ personal noncommercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, that the data is deemed reliable but is not guaranteed by MLS GRID. ©2026 NWMLS [Click here for more information](/mls-disclaimers/#39)