You need to talk to other investors in the area to get a feel for the quality of the property managers.

For term-based work (construction, renovations, additions, etc.) set completion dates, paid milestones, and if you can afford it, bonuses awarded for completing work ahead of schedule (with specific wording to make sure they complete work up to code, quality, etc.)3.)

Otherwise, vet your contractor based on their quality of work and management skills and live with the results.

Are they over-rehabbing - putting in above-standard quality items that will never generate a proportionate increase in value? 

@Lily Nelson generally if you are priced right and listed on the major rental sites in a city of decent size you shouldn't have a problem, keeping tenants has a lot to do with the quality of the unit but some things are beyond your control, responsible tenants eventually buy homes in most places. 

What kind of leverage you have if any in negotiations will generally depend on the quality of your site for their business type and what alternative choices do they have in the marketplace?

Numbers.....Purchase $45kRehab $~50kARV Appraisal $180k-230k (depending on finishes.. per appraiser)Rent $1100-$1250We have done higher end finishes throughout to attract a quality tenant/buyer.It qualifies for the 1% rule and would cash flow fine, but would you hold this one?

I call it living a blessed lifeto me real estate is a lifestyle.. however there is no doubt that in the rental world the quality of the asset will dictate the time spent and risk's involved. 

My goal is to make the property as attractive as possible for high-quality tenants (as we're doing a full redesign to all the units over the next few months) to stay with as little turn over as possible taking away the majority of their reasons for moving (or as much as we can with a return) Any help would be awesome!

Is it not as durable or high-quality?