I assume you know how to interact with your architects and engineers.

They town asked me to get an architect. 

Short of that, hiring an experienced general contractor or (probably better) and architect would be the way to go. 

They will typically request an architect's letter that confirms that the project is as of right and requires no variance, which tends to be the case.

We believe rehabbing this house could be a great addition to our portfolio.I’ve consulted several architects who’ve indicated that I could potentially build up to seven 1,250 sqft homes on the lot.

I'm looking to hire an architect who has experience with violations.

.- Consider hiring professionals like architects, engineers, and construction managers to help with the process.This process can be lengthy and involves several steps, but with the right guidance and preparation, it can be successful.

@Adolphus Fletcher Why are you asking advice from wholesalers and investors and not an architect or zoning attorney:) Setting that aside, yes I've obtained many variances in Philadelphia.

Not only attorneys, but accountants, architects and other professional service providers.

An architect or structural engineer needs to provide you with load-bearing plans for permit with the city or confirm the wall is NOT load-bearing. ($1300 for plans if only a wall--I pay $3500 for a site visit by them and close to full gut of kitchen/baths/door moves/wall removals)  Do not skip the permit!!!!