Quick Answer

Whether you need a permit to build a greenhouse depends on a few key factors: the size of your structure, your foundation type, and whether it is freestanding or attached to your home. Many municipalities do not require a permit for greenhouses under 120 square feet on a non-permanent foundation, like pressure-treated wood, but larger builds, concrete foundations, and home-attached greenhouses are more likely to need one. Requirements vary by city and county, so it is always worth checking with your local planning department to confirm what applies to your project. At BC Greenhous Builders, our team can help you prepare everything you need, from wind and snow load specs to engineered drawings, if a permit is required.