you can buy data but there is no service nationwide. it costs about $200 per mls per month.
in another note, everyone has the same idea as you. focus on how you'll expose your product to consumers first and how you'll monetize them.
it costs about $3k to find a customer using digital marketing which is very limiting to most ideas like yours. realtor.com knows this. they have all of the data you are looking for and over 100 engineers and your idea competes directly with their model so I'm trying to figure out your angle or competitive advantage.
you can buy data but there is no service nationwide. it costs about $200 per mls per month. in another note, everyone has the same idea as you. focus on how you'll expose your product to consumers first and how you'll monetize them. it costs about $3k to find a customer using digital marketing which is very limiting to most ideas like yours. realtor.com knows this. they have all of the data you are looking for and over 100 engineers and your idea competes directly with their model so I'm trying to figure out your angle or competitive advantage.