Building new homes for rentals

[Wesley Smith]

I've got 3 residential and 1 commercial rentals. My partner and I perform about 90% of construction works on our projects. I'm wondering if building a new home (about 1300-1500 sq ft) is a common practice for rentals. I'm seeing some good land deals and keep wanting to jump in and at least build one house just to test the concept. Anyone on hear that does most the work do this?