The ConsensusDocs 305 is an industry first document to facilitate lean tools without the need to sign a multi-party IPD agreement.

The below video is a quick overview of the new ConsensusDocs 305 Lean Addendum. The ConsensusDocs Coalition published the industry’s first Lean Addendum standard contract document in September of 2018.

The ConsensusDocs 305 utilizes lean tools and processes without an Integrated Project Delivery (IPD) agreement. Not all owners may procure design and construction services with an IPD or integrated lean project delivery (ILPD) agreement. The Lean Addendum provides a contractual mechanism for owners, architects, engineers, general contractors, and subcontractors alike to take advantage of lean construction efficiencies and memorialize in writing a more collaborative and cooperative culture on projects.

The Lean Addendum is significantly shorter than other integrated forms of agreement (IFOAs), such as the ConsensusDocs 300 standard IPD agreement. The ConsensusDocs 305 coordinates well the ConsensusDocs 500 CM At-Risk agreement and new ConsensusDoc 541 Design-Assist Addendum. Many would characterize the use of a CM At-Risk agreement with the Lean Addendum as an “IPD-lite,” “IPDish,” or “transitional” IPD agreement.

Need more information?

ConsensusDocs 305 – New Tool to Contract for Lean Projects

Take a look at Joel Darrington’s article highlighting how, for the first time, with the ConsensusDocs 305 we have a “non-IPD contract document available to the whole industry that provides for a wide spectrum of Lean design and construction practices.” Click here to read more!

Additional helpful resources:

Contracting with the ConsensusDocs 305


Check out the replay from our webinar with drafters of the ConsensusDocs 305.