I'm not entirely certain on building a room within the house for a leopard tort. As far as the articles I've read on the matter are concerned, raising a African tortoise indoors for part of the year is one thing, but all-year round is quite another. Most leopard tortoise keepers seemed opposed to the idea of this, as it's impossible to imitate the conditions they would receive outdoors.
That being said, I'm currently trying to raise my baby leopard tortoise indoors for part of the year, since I live in a cold climate for a good portion of the year. I've been researching the best ways to mimic the natural sun with UV bulbs. So far, and any one is free to correct me on this, I've been finding that there are bulbs out there that produce the same amount of UVB as the sun. The Megaray seems to be the best commercial bulb out there for the average reptile owner. There are more powerful bulbs, but these should be used with caution, as too much UVB is detrimental to the torts health.
Another thing to keep in mind is that leopard tortoises like to graze, so you’d need to be able to provide some area for this. Also, providing the tort with the right temperatures is crucial. I’m not sure how much you already know about the leopard tortoise setup, so I apologize if I’m telling you things you already know.
My leopard had been experiencing serious symptoms of MBD, it turns out that it was probably a lack of UVB and inadequate calcium. Even though I provided both, they weren’t enough. In the last few weeks I've learned a lot about UV lighting.
I would really consider researching the matter as fully as possible. It's really important that the tortoise be allowed outdoors at some point throughout the year.
I wish that I had done my research better; there are a lot of health issues I could have avoided.
If you would like some websites with good leopard tortoise information, I would be happy to provide them. Just send me an email letting me know. skyscream@gmail.com
Mariam