Corporate office address: 19125 North Creek Pkwy Ste #208, Bothell WA 98012

Hours: M-F 8:30 a.m.  – 4:30 p.m.

Let us know how we can assist you by filling out the message form below or reaching us at the contact information provided.

You may also find information and forms on the T-Square Properties website at

Harmony at Mill Creek

Address: 14919 41st Ave SE, Mill Creek WA 98012

Phone: 425-485-1800



On-site Open House SATURDAY 11:00 a.m. – 4:00 p.m.

On-site Open House SUNDAY 1:00 p.m.. – 5:30 p.m.

Tours available Monday through Friday by appointment and FaceTime tours available by appointment.

Pre-recorded video tours also available by request!