IKEA literally already has such an app in Steam.
[1] http://store.steampowered.com/app/447270/
[2] http://www.ikea.com/us/en/about_ikea/newsitem/040516_Virtual...
[1] http://store.steampowered.com/app/447270/
[2] http://www.ikea.com/us/en/about_ikea/newsitem/040516_Virtual...
VR is more a different direction, it's hard to take your house and represent it in VR for you to furnish. You could use something like the Matterport, but even then it's an hour or two before you can use it in VR.