Homeowners Insurance Calculator

Replacement cost is estimated as square feet multiplied by a per-square-foot replacement cost, adjusted modestly for building age. Personal property (contents) is estimated as a percentage of dwelling replacement cost.

Premium estimate is illustrative and multiplies replacement-cost exposure by a base rate per $1,000 of coverage, then applies multipliers for location risk, prior claims, deductible level, and protective devices.

This tool follows recognised best-practice principles for model documentation, data handling, and risk communication. For data-handling and security guidance we reference NIST standards; for risk-management principles we reference ISO guidance; for data quality and engineering best practice we reference IEEE recommendations; for building-safety context we reference OSHA and applicable local building codes.

Use the replacement-cost outputs to set dwelling and contents coverage limits that avoid underinsurance.

Use the premium estimate to compare how coverage choices, deductible, and mitigation measures affect approximate cost. Always obtain formal quotes for final pricing.

Example: 2,000 sq ft home, $150/sq ft, 1990 built, 50% contents, $1,000 deductible, moderate risk. Replacement cost ≈ $345,000; contents ≈ $172,500; illustrative annual premium depends on selected base rate and multipliers.

Example: Increasing deductible typically reduces premium in the model; adding monitored protective systems reduces the premium multiplier.