Donald Harrington

Managing Consultant
Construction Consulting
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303.571.0237

Don Harrington is a Managing Consultant with Aperture (formerly Sage). At Aperture, Don specializes in construction defect, cost estimating, damage, and schedule delay analysis related to residential, commercial, and civil projects. With over 55 years of experience in the construction industry, including 40 years of experience in preparing and analyzing construction claims, Don has provided expert analysis in hundreds of cases. Experienced in testifying, Don can apply his expert analysis to the court room and has given testimony in depositions and trials numerous times.

Donald's Expertise

  • Multi-Family
  • Large, Single-Family
  • Commercial
  • High-Rise
  • Airports
  • Casinos
  • Highways/Heavy Civil
  • Hospitals

Education

Bachelor of Science in Civil Engineering, 1979

Professional Certifications

Construction Supervisor Class B Certificate, Aurora #1916015

Construction Supervisor Class B Certificate, Denver #1013280

AIC - Certified Personal Constructor (CPC)

Work Experience

Aperture, LLC, (formerly The Sage Group), Denver, CO, December 2022 - Present, Managing Consultant

The Sage Group, Denver, CO, 1994 - 2022, Vice President

  • Preparation and resolution of contract dispute claims

Okes & Associates, Inc., Englewood, CO, 1987 - 1994, Senior Consultant

  • Preparation and resolution of contract dispute claims

Lincoln Property Company, Englewood, CO, 1984 - 1987, Construction Manager

  • Managed the Construction Division of property development

Kellogg Corporation, Littleton, CO, 1980 - 1984, Senior Engineer

  • Preparation and resolution of contract dispute claims

Western Heritage Company, Lakewood, CO, 1978 - 1980, Construction Manager

KB Enterprises, Boulder, CO, 1975 - 1978, President

  • Builder of residential and light commercial projects

Various construction companies, 1971 - 1975, Carpenter Foreman

Memberships

American Bar Association (ABA)

American Institute of Constructors (AIC)

Associated General Contractors (AGC)

Association for Advancement of Cost Engineering (AACE)

Construction Financial Management Association (CFMA)

Rocky Mountain Surety Association (RMSA)

Professionals for Colorado Contractors Council (PCCC)

Capabilities

Construction Defect

Cost Estimating

Damage Analysis

Schedule Analysis

Surety Work

Donald's Expertise

  • Multi-Family
  • Large, Single-Family
  • Commercial
  • High-Rise
  • Airports
  • Casinos
  • Highways/Heavy Civil
  • Hospitals

Relevant Services

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