Renovation costs in Maine run about 108% of the national average. A mid-range kitchen runs ~$27,000, a bathroom ~$12,960, and a full remodel ~$119/sqft.
Labor is the biggest local variable. Price your specific project in the renovation cost calculator, kitchen, bathroom or roof calculators.
Reserve ~15% for surprises, get at least three local quotes, and keep plumbing/structural layouts where possible to control cost.