it's 1 space planning and changes up to 3 times, same goes to the 5 3D perspective drawings, 5 different drawings (i choose the views myself) and changes up to 3 times. she discussed with me and gathered all my ideas and requirements and design and do the drawing based on what i asked for so the changes will be very little even if there will be. and 3D perspective drawings is for us to have a look of how the room(s) will look like, not the details of the renovation works. So, 1 3D drawing for each room is enough, (etc. to see the colour combinations/ the concept/ the overall feel of the design). after the 3D drawings are done, then i will go to a contractor to discuss about the renovation works for the design, this is when the details of (etc carpentry works) comes in. she mentioned she can help me to come out with the carpentry detail drawings if my contractor/ carpenter don't do that (at an additional cost of cox), but she recommended to have the contractor/ carpenter to do so as they will be the ones going to the house to take the necessary 'on site' measurements. she provides a service to do the drawings for owners like me who don't wanna sign the contract with any ID firms without knowing if i can trust them or how the design will look like. anyway if you are talking about needing 2 views per room, ID firms don't provide 18 drawings for HDB too, even if i sign the contract with them. I asked before already, also 1 view each room, no diff.