Add vertex in Polygon Boundary

Dear 

 

I have Building Roof polygons, in that connected building in edge there is no vertex, which i marked with red color circle in below screen shot. Please suggest me is there procedure to achive.

 

 

   

 

 

My expected out should be like below screen shot.

 

 

 

 

 

 

Thanks in advance

 

Venugopal