Planning: Where do plants overwinter?

Hello dear forum,

we are just about to finalize our house planning. One detail is still missing. We would like to have Mediterranean potted plants in the garden (i.e. olive, lemon, oleander, etc.). In older houses, such plants are overwintered in an unheated but brick-built shed. In new buildings, it is probably too warm for that (even in the basement). Which (cost-effective) solution can you recommend or do you use for an overwintering place? Garden shed with frost guard, cold winter garden, brick room outside the thermal envelope, or other alternatives?

Thank you all!

Pablo

I always wrapped the olive tree nicely and left it outside. Since this year, I have a greenhouse without heating... which motivated me to buy lemon, lime, and oleander. Let's see how the temperatures will be, alternatively a garage with a window?

Yes, a garage with a window would be an option, but it is apparently also within the thermal envelope, as far as I have understood so far. How do other plant lovers solve this in new buildings?

Thermal envelope? Garage? Is it heatable?

I wanted to say that the garage is integrated into the house and insulated and therefore probably also too warm. Or am I wrong here?

I wanted to say that the garage is integrated into the house and insulated and therefore probably also too warm. Or am I wrong here?

Just because it is insulated or sealed does not mean it will be warm. I think it is a good place for the plants - frost-free! If you also provide light, the plants will feel comfortable with you in winter too :)