The distance between a patio and the foundation of your house, also known as the “house clearance” or “patio setback,” can vary depending on local building codes, the type of patio, and its specific design. Here are some general guidelines to consider:
Local Building Codes: Always check with your local building department to determine if there are specific requirements or regulations regarding the distance between a patio and your house’s foundation. Building codes can vary by location, and they often dictate minimum clearances to ensure safety and structural integrity.
Concrete or Permanent Patio: For a permanent patio made of materials like concrete or pavers, a common guideline is to maintain a minimum clearance of at least 6 inches (15 centimeters) between the patio’s edge and the foundation. This allows for proper drainage and helps prevent water from seeping into the foundation.
Wooden Deck: If you’re building a wooden deck as your patio, building codes may have more specific requirements. It’s common for decks to have stricter clearance rules to ensure proper ventilation and prevent water damage. In such cases, the clearance could be several feet, depending on local regulations and the deck’s height.
Slope and Drainage: The slope of the patio away from the house is crucial for proper drainage. A minimum slope of 1/4 inch per foot (2% grade) is often recommended to direct water away from the house. The clearance between the patio and the foundation should be designed to accommodate this slope.
Ventilation: Some house designs may require clearance for crawl space or basement ventilation. Always ensure that such vents are not obstructed by the patio.
Professional Advice: It’s advisable to consult with a local contractor, architect, or engineer who is knowledgeable about local building codes and site-specific conditions. They can assess your particular situation and design a patio with the appropriate clearance to meet both safety and regulatory requirements.