J-Scotts rehab book is great and lists order of items.Here is a rough list:1) Gut2) Framing - Roof, Siding, Windows3) Plumbing rough in4) Electrical rough in(You can run electric and plumbing at the same time, but I found it is easier to move electrical than it is a vent stack for plumbing)5)HVAC6) Drywall7) Trim8) Paint/Spraying9) Finishes & Flooring, Electrical/Plumbing Final, landscaping10) Clean, paint touch ups & Appliances

., legal as park, nonconforming, grandfather)-Master gas or electric?

(I'm also in San Jose) You can do:Stick build - fully customized takes the longestPanelized prefab - where the framing, electric, and plumbing all happen in a warehouse and walls are laid flat and then transported.

The deals on shell cabins are great but my due diligence is showing there'd be a lot of costs associated with doing (either) solar/public electric; well/public water; septic; etc. 

Don't forget the servicing costs for 6 utilities (gas, electric, water, sewer, phone, cable).

We also used the opportunity provided by the extend of the demolition to do the following:Install a free-floating, insulated (R10) subfloor (a first for us) over the slab on the main level;move the laundry under the stairs to the second level - a better use of space than the deep sloped ceiling closet that was there;resize kitchen - we made the kitchen 42" longer, but this necessitated moving the electrical panel into an 18" upper cabinet;reconfigure the bathroom - with the laundry not moved out of the bathroom, we made the bathroom a little deeper (about 6"); moved the toilet slightly; shifted the tub about 18" and moved the vanity to the other side of the room;reduce the size of the living room window to an 18" transom window giving much more usable wall space;replace the broken windows with Energy Star certified windows tuned for their exposure;build an entertainment feature wall on the living room side of the stairwell.open-up both sides of the stair well (living room and hall by bathroom) - this allows for better air circulation - a necessity when we install the heat pump.Here are a few select shots of the process:Demolition begins:Repairing sections of wall:All electrical and data network runs were installed, then next came the insulation:We finished shifting our plumbing and patching the slab.Next we "leveled" the slab ... ok, we made it better ... and laid the subfloor:Note that we installed 4" high, plywood spacers around the perimeter to keep the floor ~1/2" away from the external walls.  

This project also needed the crawls space to be completely redone; new drain tile and sump pump system, foundation repair, encapsulation, rim joists and floor joist, 14 new supports with cement footings, plus the duct work, electrical, plumbing, and main drain lines... easily about $25k to contract out... my cost was about $2,200.Sometimes I say, " I save more money than I make".  

The owner obviously wants to sell it as-is, so:Pros: Water, Sewage, Electric, decent property, great priceCons: i have no idea how to dispose of the trailer.Does anyone have any advice?

Looking for tech which is efficient, productive, and cost-saving (electricity, paperwork, etc) for my home.

For instance, electricity exceed over $150 per month will be at X% of the tenants responsibility.