1.  Outline Greenhouse Configuration and Use

• What type of foundation do you plan on using?
• Plan for future growth so that you can grow into your greenhouse; not outgrow your greenhouse.
• What will be grown?
• Will plants be grown for personal use or resale?
• Will your greenhouse be used year round?
• Keep in mind the need for and location of any utility "stub ups" or "stub ins."
• Draw basic and simple pictures of your house floor plan and ideas you currently have. However, remember to be open to your suppliers, as they may come up with options you had not thought of that serve the same purpose for much less money.

2.  Take Your Local Environment into Account

• How warm do you need to keep your greenhouse in the winter?
• How cool do you need to keep your greenhouse in the summer?
• Does the proposed location provide adequate exposure to the sun?
• Does the greenhouse need to function as a barrier against local pests? What pests need to be kept out?
• Will vandalism or security be a concern?

3.  Again, Be Familiar with Local Building Codes and Utility Requirements

• Will your Local County or city require a building permit? If so, will they require engineered calculations and plans stamped by a local professional engineer?
• Is the proposed site zoned for a greenhouse? If not, a conditional use permit may be required at considerable time and expense.
• What load ratings are required for your area? For example, most greenhouses come standard with a 10lb. live load and 70 mph wind rating. Higher rating requirements will add to the cost of the structure.
• If the greenhouse has a drain or sink, local codes may require connection to the sanitary system. Some municipalities may require expensive backflow prevention or water treatment systems if chemicals or pesticides will be used in the greenhouse.
• Does the proposed greenhouse site offer easy access to utilities? What will be the fuel source for heating? What types of electrical options are available to you? Where is your water supply?