Zoning  and environmental concerns greatly affect value.

You may want to also pull out statistics in project cancellation/project shutdown due among other things, State induced strict compliance to the letter, contractor's compliance and liability costs (biggest reason why significant California contractors are put out of business aside from tight competition), it's just next to impossible to earn contractor wages based on economic conditions (that being current prevailing economic depressed consumer wages cannot support re-construction costs or that wages to property modification ratios is not sustainable in long term basis), indicators, and indices (unit labor ratios, material integrity and application ratios, Local, State, and Federal (labor, occupational hazard, environmental) compliance costs, and certain and uncertain risk factors.

I like destination tenants ( barber shop, nail salon, restaurant, doctors office, environmentally green dry cleaners, gyms, karate schools, etc.)

Maybe the gurus are the ones that are polluting the community with $995 courses for bird dogs and wholesalers.Ignore the bad wholesalers -- How exactly to do that?

Has an environmental and survey been conducted?

You could jump through hoops and get a "Letter of Environmental Protection" which will allow you to rent to families, but it will devalue the property and increase insurance rates.  

Animal/Environmental Conservation2.)

Possibly environmental or structural.

Do you know if you're going to need a seawall or not and if there's any environmental setbacks etc  or if you need to do a environmental survey prior to building... did the lots come with any information as far as what's allowed, what's not allowed, what the minimum square feet needs to be for the dwelling etc?

Leon, I have personally handled refis for large investors on commercial properties, and I can tell you that there is always some aspect that is being personally guaranteed (environmental for instance) by the members of the LLC.