✔ 最佳答案
1. Yes - as it is in a written contract. So unless there is any defectiveness, the contract is binding.
2. It depends. Hong Kong Ordinance is weak on determining on what constitutes habitable. So it will be up to the judge's interpretation.
3. Yes.
It sounds like that your proposed tenant wants to buy everything in new.
Usually, tenants will only put those into contract to protect them from compensating the landlord for the damage. But if this time, the tenant asks specifically that those are needed to be repaired, I will have my reservation on this.
Personal suggestion - drop this tenant.