- You can use existing Revit families to remodel your project, for instance the building walls
 - Double click the Floor plan acting as base of the walls
 - Navigate to the Architecture tab and click Wall in the Build group
 - Choose a wall family and trace the building by picking the corners of the point cloud
 
							- Go to the 3D view and select the walls (select one wall and hit TAB to select all connected walls
 - In Properties set Top Constraint to Up to level: Roof
 
							- Double click the Floor plan acting as base of the Roof
 - Navigate to the Architecture tab and select Roof in the Build group
 - Go to the 3D view
 - Choose Pick Walls in the Draw tab and select the walls
 - Select the left and right sketch line and uncheck the box for Define slopes
 - Finish the sketch by selecting the green checkmark
 
							- Select the walls
 - Select Attach Top/Base in the Modify Wall group
 - Select the roof to extend the walls