Do I need a landlord panel if...

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I own a two family and live in the bottom unit. Top unit has their own private washer/dryer and heating system separate from the downstairs. But technically the tenant in the top unit is supposed to have access to basement by law- as the electric panels and water shutoffs are in the basement, -- correct? Or is there a way around this? The basement is somewhat of an extension of the bottom unit, as the washer/dryer and a few storage closets are in the basement- and there is no other reason why the top unit would need to enter. So I need to come up with a solution as I'm planning on moving out soon. I want the new tenant to have sole use of the basement with exceptions of emergency situations. Is this legal or just stupid? I think I'm stuck installing landlord panel just for the basement, but any other ideas are welcomed.

ps. As a side note: There are 2 outdoor lights, but each one is separately controlled by each unit, as they have different parking and walking areas, so there shouldn't be an issue designating these to the assigned units, correct? It seems a little excessive to spend so much money for a landlord panel when only one person is using the lights?