This week readers visited Brick Underground to learn about what it takes to switch from gas to electric energy. There are benefits for your health, finances, and the environment—but the process can be complicated. It doesn't have to be all or nothing—for example, a building can swap out heating and cooling systems, or just water heating, or both.

Also of interest: Did your landlord indicate your lease is not being renewed? You are entitled to get notified in advance—and the length of notice depends on how long you have been there.

Here are this week's top five posts:

1) Want to switch your NYC apartment or building from gas to electric? Here’s what you should know

2) Lease isn't being renewed? You are supposed to get advance notice. Here's what else you need to know

3) What you need to know about installing a closet system in your NYC apartment or brownstone

4) The pros and cons of using a mortgage broker when buying in NYC

5) Home sharing with a senior: Roommate matching program makes living in NYC more affordable