Urban centers, suburban regions, and rural areas grapple with a significant deficiency in affordable housing.

Forgot to mention... if foreclosing lender sought and obtained a deficiency judgment, the parking spaces are likely not free and clear.

Turning this property into a rental in the next 6-8 months so I want any possible deficiencies to be fixed on their dollar.

It's not necessarily because they are unknowledgeable about market prices (although they are at times), legislation was passed to make banks market properties in a way to protect the foreclosed consumer against a huge unnecessary deficiency judgement.

There's always a deficiency judgment associated with those bids.

In California, the land of no deficiency judgments, sometimes folks just hand the bank the keys and move on in situations where they are badly underwater.   

The resulting balance wil; be the “deficiency”.8.

Once a judgement is obtained against both the borrowing entity and the guarantor(s), then the property can go to foreclosure sale and any "leftover" debt owned after the collateral has been liquidated is called the "deficiency balance".

You don't understand or comprehend how a zestimate work's or get's to it's price, indicating a significant deficiency in appraisal knowledge. 

And if they can't, they should try, then recognize their deficiency, and hire that aspect to an affective pro to crush it for them.