AIA B-101 still has the basic phase categories as follow. I do not think the phase names have changed in the last 45 years - remember the old Architect's Handbook of Professional Practice?
- 3.2 Schematic Design Service Phase
- 3.3 Design Development Phase
- 3.4 Construction Documents Phase
- 3.7 Construction Phase
Most everything else is listed under the 4.1 Supplemental Services list.
My work over the last 45 years (some of it at large firms - HOK was one of them) used an expanded breakdown of project phases for inhouse purposes. This helped me define fees and then the inputs into the company's project financial platform and then invoicing. For contracts I would roll up a few phases for simplification or to just better match a project delivery method.
The expanded phasing approach I used included depending on the project and client used most of all the following phases..........
- Pre-Design
- Schematic Design
- Design Development
- Construction Documents
- GMP + Budget Reconciliation (for CM@R)
- Final Construction Documents (for CM@R)
- Permitting
- Bidding and Negotiation (review CM@R sub scope writeups tom comment on their scope writeup)
- Construction Administration
- Closeout (Internal)
- Warranty Period Participation (if required in the owner's scope and/or if the owner would pay for this)
- Sustainability Objectives Post-Construction Confirmation (if required in the owner's scope and/or if the owner would pay for this)
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Michael Katzin, AIA
Johns Creek, GA
Member - Johns Creek Planning Commission
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Original Message:
Sent: 05-13-2025 05:36 PM
From: Sam Watkins AIA
Subject: Project Phase Numbering
I haven't used a numbering system like this. It reminds me a lot of the RIBA Plan of Work, which seems to be both more comprehensive and strategic than the AIA's approach. I particularly like the way it links use and assessment in a circular manner.
https://www.architecture.com/knowledge-and-resources/resources-landing-page/riba-plan-of-work
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Sam Watkins AIA
Brown Reynolds Watford Architects
Dallas TX
Original Message:
Sent: 05-09-2025 10:35 AM
From: William H. R. Taylor AIA
Subject: Project Phase Numbering
Does anyone use the following numbering sequence for project phases:
02 Schematic Design
03 Design Development
04 Contract Document
05 Bidding and Negotiation
06 Construction Administration
I relate the numbers to the phases and have for decades, but I have no recollection of the origin. I thought that earlier AIA documents defined the phase numbers, but I cannot find any evidence of such.
I appreciate any input.
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William Taylor AIA
GreenAssociates, Inc.
Chicago IL
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