Hi, I know there are so many things to take into account and it's hard to get perspective from a photo. The white you can see is an extension with building paper, and the red is the existing building which is two story. The exterior is wide weatherboard planking, the windows are silver aluminium with very little trim. The doors in the front of the picture are French doors from bedrooms that will open to an enclosed courtyard ( yet to be built of course) The roof will be a light grey/brown but you won't see it much because of the flat roof style. There will be decking and ballustrades covering half of the new extension.

I'd match the white of the door trim and baseboards.

I agree that you should take down the trellis but be aware that you'll probably need to extend your decking rail along that side in order to enclose the deck for building code purposes. If that's more of an expense than you're willing to incur right now, consider at least taking it down to the same height as the rest of your deck and putting a top railing across it. You could then put in some foundation plantings that would climb up and cover the fact that it runs in a different direction than the front of your deck. If I'm looking at it correctly, your gate gives you access to your front door from your drive way. Am I right? In that case, I think your gate should stay where it is. I agree with flair lighting that a new light is in order over your entry. If you like the idea of a motion light, they make decorative outdoor fixtures with motion lights built in. Your fence would definitely look nice painted a lighter color. Right now, as flair said, it's a bit unwelcoming. If you're painting your metal roof, take your house and trim colors from there to coordinate. You could definitely paint your scalloped trim a different color than the house. Matching it to whatever trim color you choose would look great. Do you use the steps from your deck to access your yard? If not, I would consider removing them and closing in that portion of the deck as well. If you do use them, I would add a hand rail for safety purposes. Congratulations on your new house and good luck with your project!

The island benchtop and countertop used is White Snow from Uniquartz