Here's a big "math" you overlooked for quite a few years.Right now $388k in equity, minus (let's go all out) $100k in closing costs, gets you a walk away of $288k in equity.Use that $288k as a 20% DP, and you should have $1.44M in property value,...not $415k. 

It takes walking new investors through the process from real life lead generation to acquisition, renovation and disposition. 

Selling the PropertyIf your parents decide to sell, they could: Sell As-Is: At a current appraisal of $350k, they could walk away with a sizable profit (after transaction costs like realtor fees, taxes, etc.).

You don't have to spend a fortune and buy a house directly on the beach to do well, but your starting price point for a viable option in this market is around $350-$450k for a solid 2-3 bedroom oceanfront condo or around $500k for a 3-4 bedroom house within walking distance of the beach. 

Sometimes I actually walk away from the deal - Not All Creative Financing Deals Make Sense. 

At yet another sale there was a brick row house/town house for sale that looked good from the street, but since it was in the middle of the row, to see the back of the house, you had to walk around the block and see the house from the alley, where the entire 3 story brick back wall of the house was laying in the back yard, and there was no back wall standing. 

The home is in a B class neighborhood, in a good school district, and walking distance to parks.

Nothing points to this better than claiming the property cash flows $1,000/m relying on rent collection and debt service/taxes/insurance while responding to my question about other operating expenses/reserves with:  "repairs will come and we will fix, but that's why we do our due diligence before we buy so we aren't walking into major repairs".  

Contractors, unless you have a working relationship with them, normally do not want you bouncing ideas off them.Understand what their hourly rate is, have a discussion with them that you are okay with paying them an hourly rate if they walk the property with you and provide you a scope of work along with an explanation of what you can/can't get away with in regards to improvements.ask them if you go with them, if they can credit you the amount that you paid.Once you develop a working relationship with a few contractors, you can bounce ideas off them and expect quality responses.I do not invest in New York.Best of luck. 

It is not walking distance to much but a short drive to a lot and generally a touristy area.