I would also look at the full picture.

Finally, double-check local demand and rent trends in the area to ensure the pro forma income is achievable.I’ve worked on several mobile home park deals as a broker and am currently helping a few clients sell their parks, so I know how important it is to ensure the numbers make sense both now and in the long term.

Make it look super 'cute' and charge double!

If you don't double & triple check everything, you stand to lose money while the people promising you the world make money.  

Add a picture you've personally taken of the property if you use postcards.

Just the fact that it's a townhome means there's 1 or 5 or 50 just like it, so I can't picture what could be so unique about it unless the OP is fleecing the seller and he knows it, and the seller has just realized that which is why he doesn't want to sell.

If I can refi at the same rate or lower, that $50-$100 could be double or more.

Very difficult to see in the pictures what has been built in a month.

I've named my book of mistakes HOA-M (H.E. double hockey sticks Of A lot Mistakes).

Hopefully in writing....I believe you have a leg to stand on here...They cannot just double the price without your approval.As has been said, contact the PM and have a heart-to-heart talk.