Let them leave on their own, not at your expense because you are not asking them to leave and will accommodate reasonable costs due to the required work.BTW, I had to do a seismic refit in my house in San Bernardino County when I did a 1200 square foot room addition. 

Even if it's not near your site, you might still be forced to use it and you will have to spend the $1000's per foot to bring a new main to your plat. 

If that's what you want why *****foot around it? 

It's a two-story complex as of now but it's zoned for an additional 150 foot vertical clearance.

Also, if they have a child then they will want one as well.The other side is that if the area is more of a single/dating area and little to no families then the shower might be better.  

There was a single woman with a child living in the home and over the years it had become somewhat neglected.

You'll want to find out how appraisers in the area value real estate in your area.In my area, the value is highly affected by location, views, and finish level.In other areas, it's almost purely dollar per square foot since many of the other factors tend to be equal.In my area, you'll see a house sell for $200/ft right next door to one that goes for $438/ft.

@Geordy Rostad I think the 500 foot the title and the appraisal

I combine some formulas of what has sold, cost per square foot, unit types and current market conditions.

My girlfriend, and mother of my soon to be child, hated what I did at first.