As a PM the only time I pay extra for hot tub service is 1) a complete drain scrub and refill (happens every 1-3 months, $120) or 2) If a technician visits to fix a problem ($125 trip cost) Hope this helps!

Cost us $2,000/window (beyond the cost of the window itself) for 25 windows!  

Very straight forward to use and cost effective.

If a Cost Segregation Study had not been performed on this $60,000,000 multi-family property located in Murray, UT, it would have had first year depreciation of approximately $1,963,636.

Prices are still low.

Take equity out of one property will cost me about 1K a month and with the mortgages on the new purchases, I will probably only cash flow 200-300 per home. 

Would a low-doc asset based loan be the best way to go? 

A few investors I've worked with have gone for projects that are huge to start with because the project looks extremely profitable and then suddenly they are overrunning the project costs.

I think mine cost about $1200.

If you live in the property there are some great owner-occupy loans available, like FHA or low money down conventional loans.