. >> adding a bathroom, adding a ron shipp is a sensible. we see a lot of people putting elevators as our population, including us, ages. >> or houses are getting more vertical. >> that is right. no permit is required for a tool shed that is less than 100 square feet of area looking down, bird's eye view. less than 100 square feet, no permit is required. without a permit, there is no trigger for an assessment. >> you could go up two stories? >> no, actually. the planning department has a height limit of i think 10 feet in the required the rear yard area. eight or 10 feet. [laughter] keep your hot tub in your toolshed. >> in this market, if you bought your house recently and you are thinking about doing one of these that you think is going to make your assessment go up, you can always apply and have your assessed value go down. >> we have some information here about that. we will get to that in a second. having a swimming pool or a sauna will change the assessed value of your property. i would get approval. it is the least improvement value t