Hi,
I was Electronic Engineering and the 'Civ Eng' dept was very highly regarded as being one of the top 5 I think it was in the world for this area of study. That brings me to the point that I think rather than choose a place because of climate, choose a university based on it's ability to give you the course you'd like to go for. To me, it still sounds as though you are in the very early stages of just 'thinking' about moving to the USA long term. I don't know enough about the US education system, but I'm almost fairly certain the US equivalent of GCSE's/education level at age 16, will not allow you entry to a university.
I'd also recommend you keep the property you have in your name rather than sell it off. As it's generating an income it's an investment, however I think you have a serious amount of due diligence and research to do way prior to you thinking about selling the property to fund what you current are at the thinking about stage. For instance, you may well indeed decide to sell the house, I'd then say look quite seriously into purchasing a US property at a much cheaper price and rent that out for some future financial stability/income? this way you get to still be a property owner and have enough left over which when carefully managed can really help with your living costs and expenses as well as your course fees etc. You'll need to look at the tax implications of this as well though.
Universities will do tours, I went on a few with some of my US cousins in the NYC area in the late 90's, all the parents that were there kept asking me about stuff I'd experienced at university in the UK (boy I REALLY had to hold my tongue there!) but overall you'd find the basics pretty much the same as a university here. Is it worth flying out there just to go on a university tour? I'd think not, there's plenty of information online nowadays, if you go as part of a wider ranging visit as previously mentioned then go for it.
I'm a 'little' out of touch with 'in demand' courses nowadays, but I do have some friends who are Surveyors and Architects as well as other jobs now within the 'Civil Engineering' banner and many are looking at emerging economies to consult there with the accelerated projects and infrastructure development going on. The USA has plenty of local talent in this respect - so just saying is Civ Eng. the 'right' choice for you?
I'm in Vegas next month, if you are around between the 19-23rd April, I'll show you around if you'd like! I'm also there on a working holiday and there's a massive car show I'm involved in as well
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then it's back to LA for a few days for more meetings etc.
Cheers, DtM! West London & Slough UK!