Protect your remodel from surprises, theft, and liability. Tune limits and discounts to match project. See premium breakdown instantly after you submit below today.
This calculator estimates premium using a base rate, multipliers, and add-on components.
Insured Value = Post-renovation Value + Renovation BudgetBase Premium = Insured Value × Base Annual Rate × (Months ÷ 12)
Adjusted Base = Base Premium × Location × Construction × Occupancy× Scope × Type × Activity × Deductible × Claims × Hazards
Total Premium = (Sum of Components) × (1 − Discounts)
This calculator converts renovation details into an insurance estimate by combining insured value, duration, and risk multipliers. Insured value equals post‑renovation value plus the renovation budget, reflecting exposure for materials and completed work. Duration prorates premium, so extending a project from four to eight months roughly doubles time‑based cost, all else equal.
Builder’s risk is modeled as the core property portion. A higher renovation budget increases on‑site material values, while a higher post‑renovation value increases the potential severity of a major loss. If you store high‑value finishes, raise the materials limit to better match peak inventory. Selecting a larger deductible reduces the deductible factor and can materially lower the estimate, but increases your out‑of‑pocket loss.
General liability responds to third‑party injury and damage during construction. The calculator scales liability premium with the square root of the selected limit, so moving from $1,000,000 to $4,000,000 does not quadruple cost. Medical payments adds a small layer for minor injuries without litigation, useful for frequent foot traffic or occupied projects.
Risk flags influence the multiplier, including storm, wildfire, flood, and earthquake exposure. Activity items such as hot work or opening a roof add surcharge because they raise fire and water‑intrusion probability. Controls like alarms, extinguishers, fencing, and supervision create discounts. Using written contracts and verifying contractor insurance also reduces assumed retained risk.
Results show a component breakdown and interactive graphs. Treat the total as a planning range, not a quote; real pricing depends on underwriting, exclusions, and local rules. Use the sensitivity graph to compare deductible and duration scenarios, then export CSV or PDF for stakeholders. Revisit inputs when scope changes, because limits and hazards move quickly during renovation. For budgeting, compare component shares—property, liability, theft, and delay coverages—then align limits with lender requirements and contract terms early today carefully.
It combines post‑renovation value and renovation budget to approximate the maximum property exposure during the project period.
Premium is prorated by months. Longer timelines keep materials and partially completed work exposed to loss for more time.
Match peak on‑site inventory, not average spend. Consider deliveries of cabinets, tiles, appliances, and staging for multiple rooms.
Use it when financing costs, rental income, or penalties depend on schedule. Set days and daily cost to reflect real cash impact.
Often they help, but discount eligibility varies. Insurers may require documentation, monitoring, or specific standards for alarms and fencing.
No. It is a planning estimate. Final pricing depends on underwriting review, property details, exclusions, and local market conditions.
Sample scenarios to illustrate how inputs can affect the estimate.
| Scenario | Value After | Budget | Months | Scope | Risk | Estimated Premium |
|---|---|---|---|---|---|---|
| Kitchen refresh | $280,000 | $45,000 | 3 | Light | Medium | $520 |
| Full remodel | $450,000 | $110,000 | 6 | Moderate | High | $1,740 |
| Extension build | $620,000 | $180,000 | 9 | Major | High | $3,180 |
| Exterior rebuild | $510,000 | $140,000 | 7 | Major | Extreme | $4,250 |
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.