House Map Covered Area Percentage Calculator

House map covered area percentage calculator — check your plan against building bylaws. Use the free House Map Covered Area Percentage Calculator below — enter your values and get instant results, right in your browser. Coverage (%) = proposed covered area (sq ft) ÷ (plot marla × 272.25) × 100.

How to use the House Map Covered Area Percentage Calculator

Every housing authority caps how much of your plot the house may cover — exceed it and the map gets rejected, or worse, the extra construction faces demolition. LDA, for example, typically allows around 60–65% coverage on a 10-marla plot. This house map covered area percentage calculator divides your proposed covered area by the plot area to give the exact percentage, so you can adjust the plan with your architect before submitting it for approval.

  1. Enter your plot size in marla.
  2. Enter the proposed total covered area of all floors in square feet.
  3. Click Calculate to see the plot area and the coverage percentage.
  4. Compare the percentage with your authority bylaw (often 60–65% for 10 marla).
  5. If over the limit, ask your architect to trim the plan before submission.

Formula

Coverage (%) = proposed covered area (sq ft) ÷ (plot marla × 272.25) × 100.

Worked example

A 10-marla plot is 2,722.5 sq ft. A proposed 1,800 sq ft house gives 1,800 ÷ 2,722.5 × 100 = 66.1% coverage — just over a 65% limit, so the plan needs a small reduction before approval. Shrinking a bedroom by a foot usually brings the plan under the limit without hurting the design.

Frequently asked questions

LDA bylaws typically allow about 60–65% coverage on 10 marla; smaller plots often get higher percentages. Confirm the current schedule for your authority.

The map is rejected, or unauthorised excess construction can face fines and demolition orders.

Yes — all roofed construction including mumty, stairs and car porch counts toward the covered area.