Unless displaced by the provisions of the Uniform Owner-Resident Relations Act, the principles of law and equity, including the law relating to capacity to contract, mutuality of obligations, equitable abatement, principal and agent, real property, public health, safety and fire prevention, estoppel, fraud, misrepresentation, duress, coercion, mistake, bankruptcy or other validating or invalidating cause supplement its provisions.
NMS § 47-8-4