How To Calculate Square Feet From House Plan

Calculating the square footage of a house is essential for various purposes, such as determining the cost of construction, estimating materials required, and assessing property taxes. Whether you're a homeowner, contractor, or real estate professional, understanding how to calculate square footage from a house plan is crucial.

This comprehensive guide will provide step-by-step instructions and practical tips to help you calculate the square footage of a house from a floor plan accurately.

Essential Aspects to Consider

Perimeter Measurement: Determine the length and width of each room by measuring the exterior walls' dimensions.
Area Calculation: Multiply the length by the width of each room to calculate the area in square feet.
Excluded Spaces: Deduct the area of non-livable spaces, such as garages, porches, and unfinished basements, from the total area.

Step-by-Step Instructions

Obtain Floor Plan: Acquire a clear copy of the house plan, either physically or digitally.
Identify Exterior Walls: Use a ruler or measuring tape to identify the exterior walls of the house on the floor plan.
Measure Perimeter: Measure the length and width of each exterior wall in feet and record these measurements on the floor plan.
Calculate Room Areas: For each room, multiply the length by the width to determine its area in square feet. Note these areas on the floor plan.
Exclude Non-Livable Spaces: Identify and measure the areas of non-livable spaces, such as garages, porches, and unfinished basements. Deduct these areas from the total area.
Add Up Areas: Sum up the calculated areas of all livable rooms to obtain the total square footage of the house.

Practical Tips

Use a digital measuring tool or software for greater accuracy.
Clearly label the dimensions and areas on the floor plan for easy reference.
Round up measurements to the nearest foot for practical purposes.
Consider hiring a professional surveyor or architect for highly accurate square footage calculations.
Familiarize yourself with local building codes and regulations regarding the calculation of square footage.

Conclusion

Calculating the square footage of a house from a floor plan is a straightforward process when approached systematically. By following the steps and considering the essential aspects outlined in this guide, you can accurately determine the size of a house and make informed decisions based on its area.

Whether you're a homeowner planning renovations, a contractor estimating costs, or a real estate agent marketing a property, the ability to calculate square footage is vital to ensure transparency and accuracy.