You can buy a house PCS right after and buy another, but there has to be a PCS to renew the benefit.

My parents own a 1031 Exchange, single tenant property and the lease is coming to an end.They purchased this property years ago and they have used it for their retirement income.They've asked me to handle the property for them and I'm not sure how to proceed.Does anyone have any experience renewals involving a 1031 exchange, single tenant property?

Best option is having all tenants on M2M and hold the maximum leverage of non renewal.

you can non-renew get these tenants out try again.

About 2 years ago some how my organizer account didn't renew...

Renting to students is a good model, and unlikely to run foul of the Portuguese tenant-friendly laws for renewals. 

Over the past 5 years, we've renewed, updated, and remodeled the building to attract better quality tenants (we have 5 residential units upstairs and another commercial unit).

The numbers are from the property management company, in terms of vacancy, average lease times, renewal fee, etc.

@Heather R. yes, the lease was renewed for a second year, ending in March 2018.

Higher end parks and lower end parks have done contracts, usually renewing every year.