With the facades, it really comes down to personal preference and your budget. I would have loved to upgrade my facade but budget didn't permit and there were so many things internally that I wanted to spend the money on so something had to give. As for the facade adding value to your home, I personally don't think it would affect it. Unfortunately these days, you can add heaps of cosmetic things to your house but when it comes time to resell, it comes down to the area you built in, land size and the number of rooms the house has. My parents have a massive house on a quarter of an acre with all the luxury upgrades you could think of, landscaped, fully rendered and when the agent came through a few month back he was like stunning house you have here but compared to your neighbours and what the market is doing your only going to get X amount. So moral of the story, stick to your budget and don't over capitalize but whatever you choose make sure your happy with it as you will be seeing it every time you enter and exit the house. What colours you choose can make or break a facade so spend some time researching. I see so many nice house facades and then the owner skimps out on bricks and it's like why!? Don't worry too much about the re-sale as you are building it and living in it now for you.
Have you considered doing anything after handover? I am getting my render done after handover and it is so much cheaper. My developer approved too and has given me 90 days after handover to have it done. Same with flooring, electrical, concrete and landscaping. I know it's easier to get the builder to do it but we are talking about savings of a few thousand.
My finished price was $232 with everything I listed above. I have everything else sorted and after handover costs are $11K. I didn't upgrade my heating, I left the standard. I will get air conditioning at a later date. I don't know much about that as I haven't really looked into it, but they can do a lot still after handover because it's a single story. If you were building a double I'd say do it now
Budgeting wise I said $230K was my max. I started with structural like what can't I change after the house is built. Added the 2m garage extension with rear roller door, added the sliding cavities and changed a few windows/doors as described earlier with double glazing. House came in at $227K for memory. Then I went to cosham and they give you the price book at the info session and I spent a few weekends down there working out what I wanted with the price. A wish list basically. Also went off "what can't I change later". Bricks and mortar. Next important thing for me was the kitchen. 40mm waterfall bench tops (I was lucky here as they buggered up my tender and included it for free) so a $3K item became $1K because they negotiated. Upgraded to silk finish which was $500 for the whole kitchen. Everything else like recessed sink, 40mm bench, 900mm appliances, pot drawers, came in the kitchen promo which saved heaps! Lastly, was shower niches and tiles to all wet areas. Even though I can change them later on, it's a lot of work so I upgraded all tiles to Porcelain Cat 5. That with a few junction boxes, fridge taps and locks I hit $232K.
With the different vanity options, I personally thought henleys designs as standard were really good. So ensuite and bathroom I left as standard. The laundry is basic so upgrading may be worth it. I was looking to do it after handover but trying to get other companies to match the colours and install actually worked out dearer than Henley. Just choose what suits you and your budget. Kitchen, I added the double cupboards above the fridge space. Powder room I left as standard.
Hopefully I didn't confuse you with anything. Let me know if you have any other questions