If you can get a better deal on the home due to age its a fine and if you need financing banks do not judge year built. 

@Gabriella PellolioIt sounds like you’re in an exciting position to leverage the equity you’ve built to grow your portfolio. 

Quote from @Gaetano Citera: I would look at what has sold for Prefab verse stick built..

Quite a bit of equity built up.

I would still do due diligence such as whole property inspection, lead inspection (depending on when the property was built), appraisal, etc. 

The poster was asking about broken/damaged household items and guests destroying a rental. 

I would try to buy properties starting at a specific date so not large ticket items come up.

-contacting several LP's nationally that take on large investment opportunities-posting on loopnet-sending the link to the website we built-out to all the the top real estate agents in our local market.I did not think of the Facebook group channel, so thanks for that recommendation @Ryan Arth!

With that being said, in a worst case scenario, you can always hire a property management company to handle the day to day items if it comes to that. 

At the end i will add a list of items why adding a single ADU in single family zoned areas may not be the best RE option.The most common value add is via a rehab.