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December 10, 2007
extension
I would like to add a pretty small 1st floor extension to the back of my brownstone- my townhouse is about 17 feet wide but the extension will only be about 14 feet wide- I would was wondering about how much it will cost to add a small extension to our house- I am new to the reno world-
thanks
Comments
I did one in my building ( 12X12) on the first floor.... I think the entire amount came out to $30K.. we did a below frost line foundation and put in a ton of glass. looks great!! I think you should estimate $200-$250/sq. ft... I have pics if you like:
mike@apt168.com
Posted by: owner12 at December 10, 2007 12:38 PM
i have been quoted around $60-75k for a similar project involving a no-frills extension (i.e. a bedroom with no plumbing).
Posted by: z at December 10, 2007 12:39 PM
As per the "outer courtyard" rule in NYC zoning code, an extension of 14 feet width at the rear of a 17 foot brownstone is in all likelihood not legal.
This zoning changed happened in 1996. The upshot of the rule is that you usually have to build the full width with the extension, or have a very shallow one.
Posted by: an architect in Brooklyn at December 10, 2007 1:40 PM
oh that would be great if I could do the full width- my neighbors all did extensions that we not the full length so I thought I might have to as well- but I am sure they did their extensions before 1996- thanks for the insight!
Posted by: jillsusan at December 10, 2007 2:45 PM
^If you're going full width, your primary restrictions then become
• keeping a 30 foot rear yard
• making sure you don't build more square feet than you have FAR
Good luck.
Posted by: an architect in Brooklyn at December 11, 2007 11:21 AM
I had a 15x15 brick extension added to my townhouse at a cost of 40k. We left some of the walls exposed brick if that affects the price at all. If interested I used L&N Masonry to do the work and can share pictures.
good luck
laurenwalsh69@yahoo.com
Posted by: guest at December 11, 2007 7:15 PM
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