Absolutely! In coastal DE we are having multiple offer scenarios on lots and homes located near the beach.
I would recommend contacting a local real estate office and explaining your situation. Most importantly don't give up if one cant help. Most real estate offices have an inventory of rentals, and will know which ones are pet friendly. Make the rental agents work for you in finding a new place. Good luck from a fellow pet owner. Feel free to call if I can help any further.
I would contact a local mortgage broker. They are great resources for free advice, and can pre-qualify your for no cost with no commitment. Feel free to call me and I can recommend a reputable one.
One of the best ways to search for a home built by a specific builder is to contact a local Real Estate Agent. Most agents that have a grasp of the area know which builders established certain communities.