New construction, townhome style or even small simple house style - coupled with nice neighborhood amenities, and in a good school zone 

Been thinking about investing in one of these sites, but want to hear which other wholesalers have had more success with and which offers the most benefits versus the cost.

Janine, I have had a lot of trouble with mobile home park on-site managers.

Buying site unseen is a huge risk unless the buyer and wholesaler have a history doing deals together.My buyers trust the deals that I bring them, but I also provide them with in-depth inspection reports along with photos/videos of the inspection along with multiple cost to completes through multiple contractors.

But I noted that places like North Tonawanda as @Pravit Jarriyapurttipong mentioned are actually outside of Erie County, it's in Niagara County, which follows the stricter landlord laws as New York State... https://ag.ny.gov/sites/default/files/changes-in-nys-rent-la...Would you recommend sticking to Erie County boundaries for this purpose?

Tailor these amounts to the significance of the task; for example:Roofer: $1,000/day (critical to weatherproof the site).Painter or garage door installer: $100–$200/day.Contract Value & Payment Terms:Agreed payment amount (lump sum or itemized costs).Breakdown of payment terms:Deposits.Progress draws.Retainage (if applicable).Scope of Work:Be as detailed as possible.

Simple and powerful. 

It gives you the power of a professional real estate bookkeeper but it's simple enough for someone who is not a fan of bookkeeping to stay on top of things because the User Experience is well thought out.

Kate I see Avalara but from looking at their site it is not clear if they are actually making the payments or are they just helping you figure out the amounts to remit?

And for an OOS, I always advise to keep things simple at start, don't get greedy, go for quality and consistency, then work on maximizing monetization later.