Alan in Seattle says:
Today, I shot the interior and exterior of a large, popular Brew Pub here in Seattle. I was hired by the architect who just completed a $4 million remodel of the restaurant. The images are to be used by the architect as part of their portfolio and marketing. As we were leaving, he said he thought he might be nice and let the restaurant use the photos he hired me to shoot. What would be your recommended reaction?
My reaction would be:
That's great, I would be happy to talk to the owner and write a license agreement for their use too.
In short, you own the photos. You've licensed the photos for a specific use by the architect and you expect to license the same photos to as many other parties as possible. Each licensee will sign a license agreement and pay a licensing fee that depends on their particular use. The video above describes this multiple licensee relationship.
Hopefully, you already have a license agreement with the architect that defines the use that they will make of the photos. But it sounds like you may not have a well-defined license agreement with the architect.