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Learn About Design-Build

Design-build is an alternative construction delivery system for public works projects over $5 million that provides responsibility for the delivery of design services and construction services within a single contract.

On a design-build project, the owner selects and executes a single contract with a single entity to design and construct the project. Design and construction are combined into a single stage, with no separate bid for construction based on complete plans and specifications. Instead, design-build contracts are procured based on a scope of work statement and performance requirements.

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Design-Build Projects

Since 2005, the Office of the Inspector General (OIG) has approved procedures of the exempt agencies. The OIG has also approved six applications from non-exempt agencies to use design-build and issued a "Notice to Proceed to Use Design-Build" letter. This includes the MBTA, which was previously non-exempt.

The six projects total approximately $222,399,840 in project costs.

Project list

Design-Build Application and Exemptions

An awarding authority must submit an application to the OIG to use design-build on a public works project of $5 million or more. The application has been prepared pursuant to Chapter 149A. 

The OIG uses an application process to assess the qualifications and commitments of the project team as well as other factors. The OIG will review an awarding authority’s complete application within 60 days.

The following awarding authorities do not need to apply: 

  • The Massachusetts Department of Transportation
  • The Massachusetts Port Authority 
  • The Massachusetts Bay Transportation Authority since July 2015
  • The Massachusetts Water Resources Authority 

What you need 

Under M.G.L. c. 149A, § 16, the OIG issues a Notice to Proceed when the awarding authority demonstrates:

  1. Authorization from its governing body to enter a design-build contract, including any public vote results.
  2. Capacity, an approved plan, and procedures to procure and manage a design-build entity.
  3. Procedures ensuring fair competition, evaluation, and reporting throughout procurement.
  4. A public works project with an estimated construction value of at least $5 million.
  5. A written determination that design-build is appropriate for the project.

How to apply

Email one copy of the application to:

igo.municipal@mass.gov

Download application

Contact

Online

Email OIG Contact Information for Municipal Matters at igo.municipal@mass.gov

Phone

Joshua L. Giles, Director, Government Outreach & Public Policy Division Call OIG Contact Information for Municipal Matters, Joshua L. Giles, Director, Government Outreach & Public Policy Division at 617-722-8828
Date published: April 20, 2023
Last updated: April 29, 2025

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