Once the basic building has been constructed in SketchUp, and the doors and windows have been added, we turn out attention to the furniture and furnishings. This is a topic we explore in detail in our SketchUp training classes.
Many items in the rooms will be custom-built, in which case we use a combination of rectangles and lines to describe the footprint. Then we extrude upwards to the required height using the Push/Pull tool. The keyboard shortcut is P. The fridge on the left here, for example, is constructed from a Rectangle (R) 600 by 700 in width and height, these values being typed into the Measurements field at the bottom right of the interface.
We then Push/Pull upwards in the blue axis by 2000mm, or by typing 2m to over-ride the default units of millimeters. We use the Line tool to draw the top freezer section – a double-line would allow us to Push/Pull inwards by 10mm to describe the two doors. Likewise handles could be created with the Rectangle tool, then by Push/Pulling outwards by 10mm or so.
We then add materials from the Materials panel, and always remember to triple-click to select the whole object, and right-click to choose Make Group. Remember to group each item as we build, otherwise they will stick to each other. The other items of furniture shown here are built in the same fashion. A library of such objects could be saved as Components, for future use in other projects.
For items like the sink, or fridges, we go into the Window drop-down menu and select Components > 3D Warehouse.  Manufacturers often upload their products onto the D Warehouse for clients to use. Type Clarke sinks, for example – various options will appear. Double-click on one to open in a larger Preview window. If you are happy with the look of the item, as well as the file size (generally under 100K is a good size) click the Download button for it to appear within your model. You can see it under your cursor – click on a point in your model to ground it. Then Move, Rotate and Scale it if necessary.
Many useful tips and techniques can be found at the SketchUp website. And see many examples of our own clients’ work on our Facebook page.
Other related SketchUp Blog Posts:

• SketchUp background
• SketchUp introduction
• SketchUp modeling
• SketchUp contours
• SketchUp workspace