Adding A Porch To A Travel Trailer Adding An Extra Room To My House Where There Is A Porch On The Second Floor? Good Idea?

Adding an extra room to my house where there is a porch on the second floor? Good Idea? - adding a porch to a travel trailer

This adds additional square meters and a little more than the property tax. I need comfort. Where I live, house prices have fallen about $ 25K. This addition will cost me about $ 25K.
With the devaluation of the real estate prices, I decided in my house for a long time before sentencing to live. I love my neighborhood. I saw my neighbors have similar length.
Please help me with this decision.