Supply problems make substitutions common. Here's how to get them approved.
In this article
Why substitutions happen
Specified products get discontinued, have long lead times or cost far more than alternatives. A well-prepared substitution request can save schedule and money. A poor one wastes everyone's time and damages trust with the architect.
Read the spec language
"Or equal" and substitution procedures differ. Follow the specified process.
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Timing
Submit early. Late requests are often rejected.
Documentation
Product data, side-by-side comparison and warranty.
Show the benefit
Cost savings, faster delivery or better availability.
Architect review
Be ready for questions and samples.
Risks
Changes in other trades, warranties and performance.
Track decisions
Log each request and response.
Pass savings
Be clear on how savings are shared.
A message to the architect
"The specified fixture has a 20-week lead time. We propose this equivalent product, available in four weeks. A side-by-side comparison and data sheets are attached."
Where to start
Create a substitution request template with a comparison table.
Common mistakes
Late requests, missing comparisons and installing before approval.
Know your numbers
Substitutions submitted, approved and the time or money saved. A record of good substitutions helps you earn trust on the next project with the same architect.
Field coordination
After approval, update submittals and tell every affected trade. Unannounced substitutions create conflicts in the field.
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Frequently asked questions
When should a contractor submit a substitution request?
As early as possible, ideally during bidding or right after award, following the timeline in the specifications.