IF it is a real problem, then yes, fix it.I would build a fir-in wall out of 2x2s and insulate it heavily (Rockwool comes to mind https://www.rockwool.com/north-america/) There is also drywall that is made for this.

I personally like to buy in towns/neighborhoods in which no new builds are possible within 10 miles because all the land is developed.

Then, start building your connection with local agents, contractors and property managers.2. 

With the right strategy, it can become the foundation for building wealth.

Quote from @Victor Yang: Hello all,I am looking to buy an apartment building.

And your net worth will thank you.If you still want to go ahead, you'd be better off buying a house than an apartment because, while the value of the building itself will go to 0, you'll still have the value of the land, bearing in mind that the land might actually lose value too given the depopulation and the yen depreciation.Sorry if I'm pooping a party but make sure you understand what you're getting into (which you're already doing by asking the forum) and then make the decision that's right for you according to your objectives.

My goal is to build a successful flipping business while keeping family time a top priority.

If you're open to exploring new markets, this could be a great way to pick up properties for cheap and build cash flow with a much smaller upfront investment.

When it comes to these types of auctions by the sheriff, is there a waiting period that must be observed before rehabbing/renting the building post winning the bid?

I’m excited to learn from this community, share ideas, and build valuable connections.