The project is in New York city, half a block from subway lines, so ground water should not be an issue.
The project is still in a feasability study stage. Not sure how happy the contractors will be to see something that may come their way a year later.
No plans for existing building available...
Sorry for not being clear enough. I am estimating for budget purposes. The actual work will be done by somebody experienced in this kind of jobs (we don't want a 20 story neighboring building develop cracks, do we?)
I need a very rough estimate of cost and time.
For instance:
$20,000, 2 weeks...
I would like to know how to estimate the complexity of the following job.
Current conditions:
Existing 4 story brick row house on a rubble stone foundation. Cellar height about 6 feet. Built mid-19th century. Brick extention, no cellar. House is located between 20 story building and another 4...