You may have one from swak already. I checked and it is not available anymore.
Sewmom.....I have a couple gnomes and a house........
Nicoles has these "Fairy Houses" set. More fantasy than Hobbit, but maybe your can make one work. (?) If you receive their newsletter - they had given us some redwork house designs a few years back that have some doors that might work.
Stitch Soup has their 3D "Enchanted Forest" collection which could be edited to use just the bits you need.
There are are a couple of designs in Woodland Treasures by Sue Box ,that might be suitable.
A house here at Cute 745781.the design number might have changed since I got it
Several years ago, Secrets of Embroidery had a set of tiny houses that might work. I don't know the designer, but maybe they can be found by a search.
They're called Enchanted Floral Homes, and there are two sets. Maybe one of them will work.
Try...
If you Google Hobbit House images, there are lots that could be very easily digitized in your software.