it might be more if the soil is no good, you will want to get a core soil sample before you get to a firm contract price, since that can be another 30k to truck out bad soil and bring in good soil.Then to build it will be anywhere between $125-150 a sq foot, maybe more maybe less - all depends on contractor relationships you have and the finishes.With everything being very busy in Boston, affordable skilled labor is hard to come by.  

Real Estate Commission ...............................ClASSES           Rental Income Properties                 1234 First Street             5678  Second Street             91101  Third Street       Real Estate Commission              2956 Mayfield Lane             1929  Wyoming Street             8252 Wisconsin Street Just think of QuickBooks as a paper ledger sheet.You have titles or headers and then you list what pertains to that header or title underneath it and you indent.Same thing in QuickBooksIt's all about TITLE, COLUMNS, INDENTING.Indenting words in QuickBooks are called sub-accounts, jobs, and sub-classesThat's all there is to it. 

So when you build two stories this particular ULDC required that we install a sprinkler system and these below1) site engineering with EPA gets involved with projects over an acre -$130002) soil and water engineering runoff drawings only cost- $15,0003) two story added bunch of sqft bc of walkway and rails added $100,000 that doesn't generate revenue. so about $3000/unit extra we had to to. not doing two stories again. 4) retention pond required $20,0005) needed a $10000 engineering stamp 

Therefore, there is no chance a modular can have wheels underneath.

If septic, with an old house/system already in place - there probably isn't enough room left over to put in 4 houses much less 7 and that's if you have the best possible soil conditions in the world.

Is the property in an area with any known soils issues (liguefiable soils, expansive clay, etc.)?

In our area we don't do perk tests anymore, they do "soil logs" where they take measurements of the layers of earth, seasonal high water table and take samples from dug holes.

As for finding new lenders in southern California for construction loans, there are several sources, depending on where in the process you are.Most lenders want you to have permits approved before they will lend, meaning you have to have the money for all the upfront work, design, civil and structural engineering, soils test, and permit application fees. 

Vinyl is a good low-cost solution for certain markets.If there are hardwood floors underneath the carpet that's good.

I wouldn't at all feel taken advantage of, either, if I needed to get "out from underneath" a property, and you were there with a fist full of cash and offered a quick, painless close!