I have a little dilemma and don’t know the answer or solution per say for this problem a friend of mine is facing.

You could open a HELOC, although that's not usually a long term solution.

If so, and you replace them first thing after closing that may be a solution.

His firm is Royal Legal Solutions. 

Once you do decide to procure your first rental, definitely lean on the BiggerPockets community as a resource; I'll also say that it could be worth considering a shot at a software solution built for DIY landlords (1 - 15 units) to bring some automation to the rental management process (just to make things much much easier for you)!

We like to think of problems that may come up and find the best solution.

Whats the solution here?

In going up it was due to the roof line and there being an attic space.Adding a room on by going out needs to consider existing configuration and aspect to enhance flow and comfort of the layout.With a big lot then going out seems the most obvious solution but what are other homes like in the area?

Point out the risk of the project and then provide your solutions to mitigate the risk.

So I need to come up with other money making solutions.