Sometimes it makes sense to pay the gains if there are not adequate replacements.

I also renovated hallway and replaced all staircases with a new oak staircase.  

Bigger doors and windows look great but replacement is hell.

Things wear out over time, require updating, upgrading, replacement etc..

Do you save three months of vacancy for each unit and $50,000 for the roof replacement?

Examples include replacing a deck or renovating a kitchen.

But, if a cost-seg study is done on the old property, you can manage Sec. 1245 recapture tax by doing a study on the new property to confirm it has as much or more Sec. 1245 property.You cannot swap a fully depreciated gas station for a raw piece of land and avoid recapture - you must replace all the 1245 and 1250 property.3) OZ - Sure you can defer your capital gains for a few years into an OZ fund, but the magic of OZ investments is the ability to achieve tax-exempt growth after a 10-year holding period.

The canceling tenant remains responsible for rent, utilities, and other charges until a replacement takes over.

There is no requirement for @John Gillick to replace debt with new debt. 

Replacements if need be?