2027 BNi Interiors Square Foot Costbook

Estimate Interior Projects with Confidence.

The 2027 BNi Interiors Square Foot Costbook gives you the specialized cost data needed to budget, estimate, and evaluate interior construction projects with confidence. Featuring 65 real-world building case studies, detailed interior square-foot costs, thousands of Unit-In-Place Costs, and metro area multipliers, this comprehensive resource helps you quickly develop conceptual estimates for tenant improvements, renovations, adaptive reuse projects, and new construction interiors. Updated to current market conditions, it enables you to save time, improve estimating accuracy, reduce risk, and make better project decisions from planning through completion.

Why Choose the BNi Interiors Square Foot Costbook?

• Current 2027 Cost Data – Updated pricing reflects today's labor, material, and equipment costs.
• 65 Real-World Case Studies – Learn from actual commercial, educational, healthcare, office, civic, residential, and mixed-use interior projects.
• Interior Square Foot Costs – Quickly develop conceptual budgets and preliminary estimates.
• Thousands of Unit-In-Place Costs – Refine estimates with detailed pricing for interior systems, finishes, furnishings, specialties, and MEP components.
• Supports Renovations and Tenant Improvements – Ideal for adaptive reuse projects, remodels, office build-outs, and interior renovations.

This Costbook is Built for Interior Construction Professionals

• General contractors
• Interior contractors
• Estimators & project managers
• Developers & owners

Whether you're pricing a tenant improvement, evaluating renovation alternatives, planning an adaptive reuse project, or preparing a detailed interior construction budget, the 2027 BNi Interiors Square Foot Costbook provides the reliable cost information needed to estimate accurately and make informed decisions. From conceptual planning through final pricing, you'll have trusted interior construction cost data at your fingertips.

Option #1: Order BNi ACCESS™ Square Foot Edition

From conceptual design and feasibility studies to budget validation and owner presentations, the BNi ACCESS™ Square Foot Edition provides the cost intelligence you need to make informed decisions and keep projects financially on track.

The BNi ACCESS™ Square Foot Edition Includes: 

• • Build Square Foot Estimates Fast Online
  • Export and Share Estimates as Excel or PDF Files
  • 1,200+ Real World Cost Models
  • 10 Different Building Types from civic to medical projects
  • Printed book

View BNi ACCESS™ Square FootDemo Video

Option #2: Order Book Only

Get all the information you need in a fully indexed printed book format. Perfect for those who prefer the reliability and feel of a physical book for estimating, learning, or reference.

Please note that by ordering this 2027 edition, you will automatically receive a copy of the 2028 edition for a no-obligation 30-day trial, as soon as it is released.  This is to ensure you are always working with the latest available data.  You can opt-out of this auto-renew program at any time.

Disclaimer: BNi ACCESS™ Square Foot is designed for general estimating and project planning purposes. It is not intended for use with Job Order Contracting (JOC) and should not be used for JOC- specific pricing, procurement, or contractual decisions.