Does the estimate include business contents?

No. Building replacement cost and business personal property are separate exposures. Inventory, equipment, furniture, tenant improvements, and property of others should be evaluated independently.

What is a coinsurance penalty?

Some policies reduce a covered loss payment when the building is insured below the percentage of value required by the policy. The exact calculation and exceptions depend on the contract.

Can I use market value or purchase price?

Those figures can inform a review but usually do not measure reconstruction cost. Land, location, income, and market conditions can make purchase price very different from rebuild cost.

Commercial Building Replacement Cost Estimator

Estimate a commercial building’s reconstruction cost by size, occupancy, construction and systems. See the assumptions and download a PDF for a valuation discussion.

Planning model: fixed assumptions, not a current local construction quote or a calibrated carrier valuation. City and floor count label the report; enter total area across all floors. They do not independently change pricing.

Building basics

Property name (optional)CityBuilding typeTotal square footageFloorsConstruction typeConstruction qualityHVAC

Foundation mix (100%)

Slab %Basement %Crawlspace %

Flooring mix (100%)

Concrete %Wood %Tile %Carpet %

Wall finish mix (100%)

Drywall %Brick %Concrete block %

Ceiling mix (100%)

Drywall %Suspended %

Roof mix (100%)

Flat %Pitched shingle %Pitched metal %Pitched tile %

Systems & features

Air conditioning

Sprinkler system

Commercial kitchen

Elevator

Enter the building square footage (200+) to calculate.

Using your result

How the commercial building replacement cost estimator works

A commercial building estimate translates occupancy, construction class, size, materials, systems, and special features into a reconstruction-cost range. It is designed to make missing assumptions visible before a policy limit or coinsurance calculation is accepted.

How to use it

Identify the building occupancy, total area, construction class, number of stories, age, roof, exterior, interior finish, utilities, fire protection, and special equipment.
Separate building property from business personal property, stock, tenant improvements, equipment, signs, paving, fencing, and detached structures.
Compare the result with a current carrier estimator, recent appraisal, or qualified contractor input, then have the insurance limit and coinsurance basis reviewed.

Before you rely on the result

This is not a certified appraisal, contractor bid, lender valuation, or coverage determination.
Restaurants, manufacturing, historic buildings, mixed occupancy, agricultural structures, specialized mechanical systems, and buildings with environmental concerns often need expert valuation.
Coinsurance, agreed value, functional replacement cost, ordinance or law, debris removal, inflation guard, and blanket limits can materially change the policy outcome.

What drives the commercial estimate?

The model multiplies total floor area by an occupancy base rate, then applies construction, quality, finish-mix and system adjustments. Enter total building floor area once, including all floors. City and floor count describe the report; they do not independently adjust this version’s pricing.

The model uses fixed assumptions, not live local construction prices. Its $80–$500 per-square-foot bounds are calculation limits, not a claim that every building can be rebuilt within that range. The displayed range is illustrative rather than a statistical confidence interval.

Keep building value separate from business property

Before comparing estimates, agree on what each includes. A building estimate should not quietly stand in for inventory, movable equipment, tenant improvements or lost income. Ownership and lease obligations affect what needs to be insured.

Building structure and installed systems: Describe construction, roof, finishes, HVAC and other building features.
Stock, furniture and movable equipment: Prepare a separate business-personal-property inventory.
Tenant improvements: Review ownership and lease responsibilities rather than assuming they are excluded or included.
Business income and extra expense: Evaluate the time and expense needed to recover operations separately.
Code upgrades, demolition and debris: Ask what the valuation and policy include; ordinary reconstruction assumptions may not cover the full exposure.

How to use an estimate in a coinsurance review

A coinsurance clause can make the relationship between the insured limit and the applicable property value important at the time of loss. The required percentage and valuation basis come from the policy. Agreed-value provisions and other terms can change the calculation.

Do not multiply this unverified estimate by a coinsurance percentage and treat that as the recommended limit. Bring the building details, current limit, valuation basis and any recent appraisal to your agent. Specialized buildings, mixed occupancies and unusual equipment deserve a property-specific valuation.

Your next step

Continue with a related tool or ask RGC’s Michigan agency team to help with your insurance.