Restoration Cost (Historic) Calculator

Per-SF restoration cost by building era and condition.

Building area (sq ft)

Era (0-3)

Condition (1-5)

Treatment (0-2)

Tab to move between fields

Construction cost ($)

$1,462,500

Cost per sq ft ($)$292.5

Soft costs ($)$321,750

Total project ($)$1,784,250

Premium vs new (%)78.42

How to Use This Calculator

Enter Building area (sq ft) and select Building era (0=Pre-1850, 1=1850–1900, 2=1900–1940, 3=1940–1970) — older eras cost more.
Rate Condition (1=Critical, 2=Poor, 3=Fair, 4=Good, 5=Excellent) based on a recent professional assessment.
Select the Treatment level (0=Rehabilitation, 1=Restoration, 2=Preservation) — preservation is the most strict and expensive.
Review Construction cost ($/sq ft) and Total project cost as a preliminary budget estimate for financing applications.
Check Soft costs (design, engineering, SHPO review fees at ~22%) which are often underestimated in historic work.
Use Premium vs new (%) to communicate to clients why historic restoration costs more than equivalent new construction.

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