2026 Architect's Square Foot Costbook

Printed book PLUS A FULL ONE-YEAR SUBSCRIPTION to BNi ACCESS™ Square Foot✓

We're excited to announce a new partnership between BNi and eConverge, combining the trusted BNi Costbook data with eConverge’s leading software. This powerful integration transforms the Costbook into a streamlined online estimating tool - saving time, reducing errors, and boosting efficiency.

Here is a quick tour video of BNi ACCESS™ Square Foot:

The 2026 Architect's Square Foot Costbook Delivers Reliable Early-Stage Cost Estimates with Clarity and Confidence

The 2026 Architect’s Square Foot Costbook is the essential tool for architects, designers, estimators, and construction professionals who need accurate, trusted square foot costs. Featuring 65 detailed case studies across a wide range of building types - from civic and educational to medical and residential - this powerful resource gives you the data you need to make smarter early design decisions.

Each project is broken down by CSI MasterFormat® divisions, and costs have been carefully adjusted to reflect site-specific constraints and real-world conditions. With regional cost modifiers for hundreds of U.S. metro areas and detailed unit-in-place pricing tables, this costbook helps you tailor your estimates to any location and scope.

 
Option #1: Order Premium Edition

Order the 2026 Architect's Square Foot Costbook and start estimating immediately with your BNi ACCESS™ Square Foot account. Work from anywhere, explore costs by project type, roof, or wall system, apply regional modifiers for precise local pricing, and easily share estimates as PDFs.

Premium Edition Includes: 

• • Printed book
  • BNi ACCESS™ Square Foot powered by eConverge™ for one full year
  • Includes access to over 1,400 cost models
  • Includes unit-in-place and assembly costs for refinement
  • Adjust project costs by location with 600+ Metro Area Multipliers 
  • Designed to reflect the challenges of working around existing conditions
  • Covers public, educational, healthcare, housing, and commercial projects

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 learning or reference.

Please note that by ordering this 2026 edition, you will automatically receive a copy of the 2027 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.