Estimate drywall, tile, and concrete before ordering, then evaluate cap rate, cash-on-cash return, mortgage payment, and amortization.
Enter room dimensions, select materials, and adjust product coverage and waste.
Metric inputs: dimensions in metres, areas in m², slab thickness in millimetres.
Evaluate operating yield, financed cash flow, and loan amortization for a potential rental property.
| Year | Opening balance | Principal | Interest | Total payments | Closing balance |
|---|
The construction estimator calculates wall area from room perimeter and height, subtracts entered doors and windows, and calculates floor area from room length and width. It divides those areas by the product coverage entered for drywall sheets or tile boxes, then rounds purchasing quantities up after applying the selected waste allowance.
Sheet sizes, tile coverage, concrete yields, layout cuts, substrate conditions, reinforcement, and local construction methods vary. Confirm package coverage and structural requirements with product documentation and a qualified contractor or engineer.
Capitalization rate divides annual net operating income by purchase price and ignores financing. Cash-on-Cash return divides annual pre-tax cash flow after mortgage payments by the cash invested in the deal. Cap Rate compares property operations, while Cash-on-Cash return measures the yield on invested cash under a specific financing structure.
The annual table groups monthly mortgage payments by loan year, showing how much pays principal, how much pays interest, and the remaining balance. Actual lender schedules can differ because of payment dates, fees, rounding, variable rates, and extra repayments.