I leased a townhouse in South Park

For three years and never missed a payment. I gave 30 days notice to vacate and had landlord sign it. I gave a forwarding address as well. How long does he have to give me my security deposit back? I left the place in very good shape.

Where is South Park?

How long does he have to give me my security deposit back?

Laws vary by state (assuming you are in the US). So your question cannot be answered without knowing your location.