How Much Stone to Order for a 1,000 Sq Ft House (Calculation Guide)

Ordering natural stone or tiles for a 1,000 square foot home can feel tricky. If you order too little, ordering extra later might not match the original color lot. If you order too much, money is wasted on excess slabs sitting in your yard.

Here is the simple step-by-step formula our team uses at Stone Mart to help contractors and house builders calculate accurate stone quantities.

Step 1: Calculate the Net Carpet Area. For a typical 1,000 sq ft built-up house, the walkable floor area across bedrooms, hall, and kitchen is usually around 800 to 850 sq ft.

Step 2: Add Skirting Borders. Every room has skirting running along the bottom of the walls, usually 4 to 6 inches high. For a 1,000 sq ft house, skirting typically requires about 80 to 120 sq ft of additional stone.

Step 3: Account for Cutting Wastage. When stone masons cut square slabs into room corners, door frames, and water drains, pieces are trimmed away. For straight gangsaw granite slabs, add 10% to 12% for wastage. For tiles laid diagonally, add 15%.

Step 4: Stairs and Kitchen Counters. Calculate staircase steps separately. A typical staircase with 18 steps (10-inch tread and 6-inch riser) requires about 90 to 110 sq ft of thick granite plus front bull-nose edges.

Bring your building layout or rough measurements to our Motihari showroom, and our staff will calculate your exact requirements for free.