It seem like you have western sun on the back of the house due to the blinds in you patio photo. To combat this the new roof could be angled low on the west and high over the house as in a fly over roof. Maybe shade sail over the spa attached to the patio roof and lots of tropical plants. It is hard to guess from the photos but if you link the two areas with decking & add gardens surrounding it for shelter. Do you need a fence around the spa? Others have said that the composite decking is good and it won't rot like timber or at least is low maintenance for a wet area.

attached plan as stated is about 169sqm but the difference between 10cm and 20cm outside walls was about 10sqm (ie 150sqm) ...allowing for the internal walls or the actual size of the footprint including the eaves? could be where they find the extra ...best solution is to ask them to explain how they calculate the size

Hi, Do you have any sample images? Cheers

Hi Deonne If your bathroom requires the two doors, my suggestion is NOT to have a bath. Keep it very clean and neat Across the recess have either a walk-in shower with a 600mm opening OR a glass panel and door. You may consider a seat in the shower ( example on our website ) A recess ( niche ) for shower 300mm high max length Wall hung, all drawer vanity. In-wall cistern toilet suite. Mixer diverter, overhead and handheld shower. Quality tapware, with min 10-year warranty Porcelain floor tiles min 300 x 300. Tile to ceiling, ( unless home has high ceiling, if high, tile to an architrave height ) min tile size 600 x 300, Ceramic to rein in cost