Budget band rehearsal spaces?

Hi. If you've seen my post on my band, Jetstream Pacific, I have a really urgent follow up question. Since we have a show coming up around summer, we need to practice our songs. I've looked around online for rehearsal spaces, and some I've seen were quite expensive. My band consists of 3 people including me. Bass/lead vocals (me), guitar/vocals, and drums/vocals. I would like to know some good, budget rehearsal spaces in Portland. Thanks