Tosa Room

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Hall Rental at the Muellner Building

The Tosa Room, located in the Muellner Building is a spacious, informal hall perfect for weddings and other large events. The Tosa Room is only available from April through September.

Tosa Room 1Tosa Room 2

Size and Capacity

Dimensions: 63’ x 148’
Capacity w/ tables and chairs: 450


  • High ceiling
  • Stage
  • Bar with small walk-in cooler
  • 8' x 30" banquet tables


  • 4-hour minimum rental:
    • $800 for Wauwatosa residents
    • $1,000 for non-residents
  • Maximum rental:
    • $1,400 per day for Wauwatosa residents
    • $1,750 per day for non-residents
  • Additional hourly rate:
    • $200 for Wauwatosa residents
    • $250 for non-residents
  • Damage deposit $500
  • Down payment is 50% of full rental price, plus damage deposit, and is due with application
  • Balance of rental cost due 3 months before rental date


Rental halls in the Muellner Building at Hart Park are available for private or public functions April through September on:

  • Monday - Thursday evenings, 4:00 pm - 10:00 pm
  • Friday evenings, 3:00 pm - 11:00 pm
  • Saturday, 10:00 am - 11:00 pm
  • Sunday, 10:00 am - 10:00 pm
To rent a hall, email or call the Parks Department office at (414) 471-8420 on weekdays, 7:30 am - 4:00 pm.  You can check Hall availability on this calendar.  The Parks office is located at the Department of Public Works Facility at 11100 W. Walnut Road which can be accessed by traveling east on Walnut Road off of 116th Street.