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I think the cartoon-like illustration works great, and stands out in this field.
I think the circle at the top of the roof makes it look less professional (hard to explain why though), and the chimney might be unnecessary, so I would try making a third version without them and see if it works.
The chimney does give it a more 'cozy' feel, but on the other hand smoke and eco-friendly might not be the perfect match:)
another idea might be adding a walkway in front of the house instead, but that's just an idea:)

Thanks Adam