Technology (CAD, REVIT, Sketchup)
3D Models General
BIMsmith Market
Excellent resource library for BIM files as well as 3-part specifications. They have a nice selection of doors on the platform.
Revit Families#specifications#cutsheets#3DS Max#IES Photometry#RFA Revit#SKP Sketchup#GSM Archicad#IFC Data Files#2D CAD#search libraryRevitCity.com
Community-generated content. Great for generic stuff and accessories that you need for renderings and scenes, but not so much for brand stuff...plus quality is varied!
BIMobject
The place where you'll find the most RFA/RVT files for vendors anywhere. Free. Amazing resource. (Absorbed Polantis as well)
CAD Models
Educational ChannelsArchitecture Detail Library
Detail Library shares construction details that can be adjusted and amended to suit your own projects, saving huge amounts of time.
plugins
HDRI