Public electricity, cycle and voltage same as in US, is generally available near villages or towns. It is expensive compared to the U.S. Generators, solar, wind chargers, and butane gas are used. No one uses heat here. Water for drinking is collected off the roof and stored in wooden, metal or concrete cisterns. This system is also used on most cayes.
City water is available on mainland in almost every town.
Water depth inside the reef on the Caribbean side, North of Belize City is about 6 ft., South of Belize City water depths are much greater. If you were going into commercial venture, you would first need to put earnest money on the property and also apply to form a corporation. To get a duty free concession to bring things needed for a hotel or another business, you must have a Belize Corporation. Higher earnings are divided amongst shareholders. Belize does not require disclosure of information from the Belize International business companies.