I found the opposite to be best. My charge control system, battery banks and inverters are in a special shed attached to the house. Inside the house is all 120VAC, except the well pump which is 220VAC.
Going any distance with DC requires heavier wire than AC, a substantial increase in cost. We also use propane for some heat, refrigerator, stove/oven, and hot water heater. A wood stove provides additional heat, with cooking capacity.
I have two solar electric systems in the house. One 24VDC with twin com-linked inverters, and a 12VDC system in my addition, with selectable pure sinewave and modified square wave inverters, and a sub-panel. The batteries, charge controller, inverters, battery banks, and grounds are in a special 8′ tall x 33″ wide x 12 3/4″ deep cabinet, the upper 66″ of it, storage below.
My Earthship also has a 12VDC from charge controller and small sine wave inverter to wiring for 3 outlets and 3 lights. It has a 12VDC Shurflow pump hooked to the battery bank, and composting toilet, rainwater catchment, and wood stove backup.
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