Good, solid construction should cost in the neighborhood of about RD$27-31,000 pesos a square meter of first class construction.
Get yourself a good maestro Constructior or construction company. Chip can help you on this. Keep a close watch on EVERYTHING.... Keep anything that can be carried away will be carried away. That is an axion. Everything. So, you make sure to get or build a strong room where you and only you have the key and you control access. Tools, wiring, fixtures of any type seem to grow feet and wings!!
Apart from that, you can budget with your architect and builder and I'll wager you will be close to those figures...80 dollars a square foot..(+/-) if you own the land!!
H B (Hey, I had lunch with an architect today!! Prices are current)