Built Data
    #fieldfirst | truth

    Field Intelligence Platform for Construction

    A patented method for field truth

    Built for construction teams. Now expanding into legal claims for construction and tax matters — after the founder used the patent on the evidentiary record in federal court.

    "We didn't build software for construction. We built it from construction."

    Forensic record work

    Audited, provenance-backed chronologies built from the record itself — construction project records and administrative or tax records alike.

    See the method

    Expert witness

    Construction and tax controversy testimony and advisory, anchored to a method that has already been placed on a federal evidentiary record.

    Discuss a matter

    The Residency

    A highly selective, founder-embedded partnership with contractors who put the people in the field first. Most inquiries are not a fit.

    Read the standard
    Looking for the platform itself? See how it works.
    Photograph of a printed Grendahl Mechanical marketing card lying on a desk. The upper panel is headed “TESTIMONIALS” and lists five short client quotes with company names — Fendler Patterson Construction, Wilkus Architects, WDS Construction, Wenck Engineering & Construction Consulting, and Roseville School District. Below it, a folded tab shows the Grendahl Mechanical logo and vertical text reading “Built Data I/O™ — Commercial Mechanical and Technology Systems Contractors.”
    Grendahl Mechanical · 2013–2021Before the platform, there were projects.Eleven years of mechanical contracting, five clients on a printed card.See the record
    The Record

    The method has been tested where it counts.

    In 2026 the patented data method was placed on the evidentiary record of the United States Tax Court. The framework held.

    Standing

    Petitioner Pro Se

    Opposition

    Six IRS attorneys

    Outcome

    Complete concession

    Now

    Appellate expert advisor

    The same discipline that defends a construction claim reconstructs an administrative record for a tax matter. Both are custodial records; both live or die on chronology, provenance, and gaps.

    Expert witness servicesHow the chronology is built
    The Research Thread

    McKinsey named it. We built it.

    The industry's productivity research and our patented technology have been running on parallel tracks since 2017. In July 2026, they met.

    1. 2017
      MGI, Reinventing Construction
      Page 9 introduces the "control tower" concept.
    2. 2022
      U.S. Patent 11,314,780
      Built Data's founder patents the audit-logging and chronologizing method.
    3. Aug 2024
      Mischke et al., MGI
      "Delivering on construction productivity is no longer optional."
    4. Jul 2026
      McKinsey, Agentic AI in AEC
      Describes the control tower — now with agents.
    Read the founder's response
    The Record

    What the field has said.

    Named, attributed, and on the record — from superintendents, directors, and the trades.

    “Brett is fully committed to growing what he has developed. He flew halfway across the country just to sit with me and review what he was working on.”
    Robert Kipp — Senior General Superintendent, Holt Construction
    “The Built Data founder and management team have great hands-on construction experience, are willing to listen to the front line workforce to improve the tool, and are totally committed to improving day to day efficiencies on a project.”
    Gregg Johnson — Project Director, Landmark Development
    See the full record

    Start with the record.

    Counsel and claims teams: bring us the matter. Contractors: tell us what the field is up against.

    See how the patented construction field data app records each day. Built Data is sometimes searched as "build data" or "builddata".

    Discuss a matterExplore the Residency
    Straight from the field

    The field talks back

    Accountability, poured fresh daily.

    Construction culture#fieldfirst