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Third hand tobacco smoke

We are looking at buying a house that currently has smoking tenants. They've been in the house for around 10-15 years so the walls and ceilings are very yellow and the house smells. We would want someone to thoroughly clean the walls and ceiling before we move in as we have a child. The ceilings are high, the house is around 140m². I don't have photos sorry. It's a 4 bedroom home