We retiled the fire place surround, oiled and conditioned all the wood paneled walls, and replaced all lighting fixtures.

Install a separate panel if possible for the ADU 

@Tom DohertyAll new electrical including wiring, panel, highhats etc about $6500 or so

As a renter in California, I value the solar panels on my rental.

Hi Everyone,We are looking to buy a property for rental and it's great except the seller obtained a solar panel from Solar City (SC) through a lease.

They are a 3D Wall Styling panels. 2.

Therefore, the house will have to be well designed and constructed to have creature-comforts such as solar panels, rain barrels, septic tanks...  

In regards to plumbing and electric: It is my understanding there is already sufficient electric (separate panel) and there are water lines coming in but I believe we would have to connect the drain lines to the sewer.

Last year I got bids on a small house (700 sq ft) it was $2,500-$3,000 for an up-to-city code rewire that included a new 220 amp riser, a new panel, GFIs in all wet locations, and hard wired smoke detectors. 

Aesthetics *is* an important part of value - if not, all cars would be strong frames and unpainted plastic panels to cover the engine and wheel wells - and the most important part of the equation (to me) is how does the existing material and look affect the aesthetics (and by definition value) of this property?