This is not exactly an answer but a really long comment. Since, it couldn't fit into the comments section, it has been put up as an answer. In my opinion, it is not completely useless, and gives a perspective on shastras.
Temples have built in a lot of places outside India too. Examples are the grand Cambodia temple (the largest in the world), temples in Japan, a few centuries ago, temples would have been probably present in Central Asia too, which was under Hindu rule for long before the Islamic invaders came. You could try to find out about them. The crucial thing to note is that each of these temples is in general different from the ones found in India. They might have certain different design, their own speciality.
According to Rajiv Malhotra, a famous scholar of Hinduism, well respected by in general various acharyas, ISKCON and even the RSS, Hinduism is not so rigid neither is it so open as to be nothing. It is characterized by what he calls an 'open architecture'. So, it can adapt to new places, new cultures and new conditions, without compromising its core values (unlike, say Islam, which comes packed with Arab culture, or Christianity of any denomination, which comes packed with western values and white culture in general).Accordingly, the rituals and the customs can change with place and time, but what cannot change for it to remain Hindu, are certain cultural values, such as yamas and niyamas, the adherence to truth, bhramacharya/non-sensuality, self-knowledge, decentralization of power, the ascetic culture of roaming philosophers/sanyasis/brahmanas etc. ( Italics = my interpretation, these particulars are not mentioned in the book, and if they are, I haven't read them well enough)
Reference: Being Different: An Indian Challenge to Western Universalism, by Rajiv Malhotra.
However, by this, I do not mean at all, that anything can be made into a temple; temple building and the associated effects have their own science associated with them, for example, where the dieties are to be placed, what geometries can the garbha griha support, how many dieties and how many dieties should be present in a particular place, etc. for which the relevant construction manual/ vastu shastras/Shilpa Shastras can be checked. What I do mean, though that it is not so rigid as to be confined to one book. I have read that different shastras were followed in Odisha, and South India, than the shastras which prescribed vimana style architecture which used to be followed in North India (before they were razed down by invaders).They have something that is the core, which must be seperated from the rest of the details. That would be the agreeing parts in the different shastras that relate to temple construction.
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