How accurate are online construction cost calculators?
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Online calculators provide ballpark estimates within 15-25% of actual costs. They're great for initial budgeting and comparing options, but final pricing depends on site conditions, material selections, and current labor rates. Use our estimate as a starting point, then get detailed bids from licensed contractors.
What factors most affect construction costs?
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The biggest cost drivers are: Scope of work (largest impact), Material grade (standard vs premium can double costs), Project complexity (structural changes, permits), Timeline (rushed schedules cost more), and Access/location (hillside or tight-access lots add 10-20%).
Should I get multiple bids?
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Absolutely. We recommend getting 3-5 bids for any major project. Compare not just price but also: scope of work detail, timeline, payment schedule, warranty, and contractor communication style. The lowest bid isn't always the best — look for the best value and clearest scope.
How much should I budget for contingency?
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Always budget 10-20% contingency on top of your estimate. Remodels in older homes (pre-1970s) should have 20% contingency due to potential hidden issues like outdated wiring, asbestos, or plumbing problems discovered during demolition.
What permits do I need for my project?
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Permit requirements depend on your project scope. Generally need permits: structural changes, electrical/plumbing modifications, room additions, window/door changes to exterior walls. Generally no permits: painting, flooring, cabinet replacement, fixture swaps. Your contractor should handle permit applications.