http://community.webshots.com/user/rikpierce This website has lots of pictures of the work of Rik Pierce. He is the most amazing dolls house builder. I am in awe of his work. His creations are both fantasy and historical and are made using paperclay and foamboard and wood. They are incredible!!
http://nikkinikkinikki72.blogspot.com/ This is the blog of Nikki Rowe. I go back to this blog time and time again because I just love looking at all the things she makes. Her work is based on witches and wizards and she makes everything from broomsticks to potion jars. Amazing and a very very talented lady.
http://www.printmini.com/ This site is jam packed with lots of free printables. These include pictures/signs etc you can print off to go straight into your dolls house and also things that require a bit of cutting and sticking after you have printed them off.
http://www.artisansinminiature.com/ This site has a free monthly online magazine which is full of well written articles, projects and lots and lots of fantastic pictures to inspire you. Subscribe and they will email you to let you know the magazine is ready to read. You can also download it or print it out and peruse it at your leisure.
http://www.cdhm.org/ This site has a great gallery containing the work of some really talented miniaturists that you can look at and also a lot of great tutorials so you can make some minis of your own.