Learn the true cost of your home renovation, today!

The Bolster Cost Calculator provides a reliable starting point for determining the true cost of doing a major home renovation in NYC. It uses regularly updated cost data from Bolster projects including the cost of materials and finishes and market rate labor, management, insurance, overhead and profit rates.


Sample Calculation:

  • Step 1. Start by selecting $75 for Economy finishes, $150 for Mid-range finishes or $200 for Upscale finishes

  • Step 2. Select $10 for Small sized project, $25 for Medium sized project or $75 for Large sized project

  • Step 3. Select $10 for a Low complexity project, $25 for a Medium complexity project or $75 for High complexity project

  • Step 4. Sum your choices for step 1, 2 and 3 and multiply the result by the area you are renovating (e.g. your apartment is 2,000 SF and you're renovating 50% of it so your area is 1,000). This gives you your Material & Fixtures cost

  • Step 5. Now select 1 for Big Design & Build, 0.75 for Small Design & Build or 0.25 for Basic Build & Some Design. Take this choice and multiply it by 35 times the area you are renovating. This gives you your Architect Fees

  • Step 6. Using your choice from step 5, multiply it by 5 times the area you are renovating. This gives you your Third Party Fees

  • Step 7. Multiply the area you are renovating by 15. This gives you your Skilled Labor costs

  • Step 8. Take your result from step 4 (your Material & Fixtures cost) and divide by 5. This gives you your Project & Site Management costs

  • Step 9. Sum your results from step 7 and 8 (your Skilled Labor and Project & Site Management costs) and multiply by 17%. This gives you your Workers' Compensation Insurance costs

  • Step 10. Take your results from step 4, 7, 8 and 9 (your Materials & Finishes, Skilled Labor, Project & Site Management and Workers' Compensation Insurance costs) and multiply by 12.5%. This gives you your Contractor Overhead cost

  • Step 11. Take your results from step 4, 7, 8, 9 and 10 (your Materials & Finishes, Skilled Labor, Project & Site Management, Workers' Compensation Insurance and Contractor Overhead costs) and multiply by 12.5%. This gives you your Contractor Profit cost

  • Step 12. Take your results from step 4, 7, 8, 9, 10 and 11 (your Materials & Finishes, Skilled Labor, Project & Site Management, Workers' Compensation Insurance, Contractor Overhead and Contractor Profit costs) and multiply by 3%. This gives you your General Liability Insurance cost

  • Step 13. Sum your results from steps 4, 5, 6, 7, 8, 9, 10, 11 and 12. This gives you your total project cost

  • Step 14. Divide your result from step 13 by the area you are renovating. This is the cost per square foot of your total project which can be used to compare your project's cost to other projects of a similar type

  • Step 15. Subtract your results from steps 5 and 6 from the results from step 13 and divide the result by the area you are renovating. This is the cost per square foot of your construction which can be used to easily compare your general contractor's pricing to other general contractor's of a similar quality

Example

  • Step 1. $150 for Mid-range finishes

  • Step 2. $75 for Large sized project

  • Step 3. $25 for a Medium complexity project

  • Step 4. ($150+$75+$25) * 1,000 SF = $250,000 = Material & Fixtures cost

  • Step 5. 1 (for Big Design & Build) * 35 * 1,000 SF = $35,000 = Architect Fees

  • Step 6. 1 (for Big Design & Build) * 5 * 1,000 SF = $5,000 = Third Party Fees

  • Step 7. 1,000 SF * 15 = $15,000 = Skilled Labor costs

  • Step 8. $250,000 / 5 = $50,000 = Project & Site Management costs

  • Step 9. ($15,000 + $50,000) * 17% = $11,050 = Workers' Compensation Insurance costs

  • Step 10. ($250,000 + $15,000 + $50,000 + $11,050) * 12.5% = $40,756 = Contractor Overhead cost

  • Step 11. ($250,000 + $15,000 + $50,000 + $11,050 + $40,756) * 12.5% = $45,851 = Contractor Profit cost

  • Step 12. ($250,000 + $15,000 + $50,000 + $11,050 + $40,756 + $45,851) * 3% = $12,380 = General Liability Insurance cost

  • Step 13. $250,000 + $15,000 + $50,000 + $11,050 + $40,756 + $45,851 + $12,380 = $465,037

  • Step 14. $465,037 / 1,000 SF = $465

  • Step 15. ($465,037 - $35,000 - $5,000) / 1,000 SF = $425.