Books, magazines and journals on 20th and 21st century architecture and architects have floor plans and drawings of completed works and projects. You can use the library catalogue to locate these. Search for the architect, building or project and include keywords such as plans or drawings.
The Avery Index to Architectural Periodicals indexes journals and magazines that contain floor plans, cross-sections, elevations, photos and images of buildings.
ARTstor contains 20,000 images of architectural plans and sections and related materials selected by the Columbia Graduate School of Architecture, Planning, and Preservation (GSAPP) from the Avery Architectural & Fine Arts Library, one of the largest architecture libraries in the world.
Architectural print journals also contain examples of floor plans, and if you are not looking for a specific building browsing the library's print journal collection will provide many examples. Below are a few key journal titles that provide plans of innovative architecture from around the world. These are available on level 3 of the Gold Coast library at the call number locations listed.
SLQ has digitised plans and drawings from their collections on Flickr:
SLNSW has digitised some architectural plans from their collections:
Trove contains links to over 50,000 pictures and scans of architectural plans available online from Australian libraries.
Specific collections include: