If you have a good understanding of the process you can hire architects, engineers and a good GC to helping guide you but you really need to know what you're looking at, understand the market and the financials of the deal and development process. 

If it is a big job then you will probably need to bring in a structural engineer/architect. 

Looking for a reputable licensed Architect in the Philly area.

I am a successful professional NYC singing teacher and "thwarted architect" and gardener (project-oriented with an underutilized visual talent) currently living in Crown Heights, Brooklyn.

@Sanjay GuptaI'm an architect.

In the traditional model of real estate, there is a developer who hires an architect. 

Now if I was going to own it, yes I rather have architect shingles 

I've been told by an architect that it is probably worth $250k but the owners said they "would like to at least get what their mom inherited it for".

Hi all, I’m a part-time investor/architect designer/landlord of two properties in Phoenix.

The other thing you will need to have is the architectural drawings and scope of work to be able to finish the project that was actually permitted.Worst case scenario, the city could make you resubmit for a new permit, possibly meaning new drawings stamped by an architect, and all new licensed trades.