The authority behind the standard.
Peter Stevenson founded SSI in 1985, co-authored the BOMA measurement standards, and built the firm that serves the largest commercial real estate portfolios in the country. Four decades of precision, applied every day.
Founder & Principal
Peter Stevenson
Peter Stevenson founded SSI in 1985 from a basement in Manhattan Beach, California, with a conviction that building measurement is a financial discipline. After studying Industrial Design at BYU and real estate at UCLA, he spent a decade at Environetics Design working on embassies and global headquarters before striking out on his own.
He co-authored the BOMA measurement standards used globally and created the Compendium of Terms. He built SSI from a Southern California practice into the firm that serves the largest portfolios in commercial real estate: BXP, JLL, JPMorgan Chase, Tishman Speyer, PGIM, and more.
Peter developed CAREM, the first computer-assisted real estate management system of its kind. He serves as one of only two official BOMA Standard interpreters internationally. The methodology he refined across 12,500+ buildings now runs inside TruSpace, giving clients the same precision at portfolio scale.
Every building tells a financial story through its floor plans. Our job is to read that story accurately and make sure the owner captures every chapter.
Timeline
Built over four decades
SSI Founded in Manhattan Beach, CA
Peter Stevenson launches Stevenson Systems from a basement in Manhattan Beach, California, introducing CAREM (Computer Assisted Real Estate Management), the first system of its kind for documenting building measurements over time.
Establishing the Standard
SSI opens its first office in Manhattan Beach, secures its inaugural contract measuring buildings in Irvine, California, and introduces the Stevenson Standard to clarify BOMA measurement. Peter joins the BOMA Standards Committee as an interpreter.
West Coast Authority
SSI becomes the firm that major landlords and institutional owners call when measurement accuracy matters. The California market, with its complex Class A buildings and high-stakes lease economics, becomes SSI's proving ground. Peter co-authors the 1996 BOMA Office Standard.
National and International Expansion
Institutional owners ask SSI to measure nationwide. The firm scales to serve national portfolios for firms like BXP, JLL, JPMorgan Chase, Tishman Speyer, and PGIM. SSI launches The Drawing Vault, the first web-based drawing administration system for the real estate industry.
Compendium and TruSpace Development
SSI publishes the Compendium of Terms: 153 definitions that standardize building measurement language across the industry. Work begins on TruSpace, the platform that will operationalize four decades of methodology into a live portfolio management system.
TruSpace Goes Live
TruSpace launches, giving clients real-time portfolio visibility, interactive floor plans, stacking plans, and square footage analytics. SSI's measurement methodology now runs inside a platform that keeps data current through every lease event and tenant change.
Work with the team that wrote the standard.
Schedule a consultation with SSI. We bring 40 years of measurement expertise and the authority of the standard's co-author to every engagement.