How to do Construction Budgeting

Among the first budgeting questions I get asked during an initial project interview is “What’s this going to cost?”.  My response of course is to find out the following answers-before responding:

How big?

How quickly?

What level of finish?

Where is it located?

What is it being used for?

Who is building it?

Nice Tudor House
Eastchester, NY | Addition & Interior 

Each of these questions has an impact on cost and delivery of the project.  When we don’t get the answers, we are forced into this dialog of “Just gimme a ballpark feel for the budget”.  OK, so here goes the thumbnail approach:

(a) We divide up the project into segments related to their use and construction type then (b) multiply the size of the segmented portions of the project in square feet times a rough dollars per square foot to obtain an order of magnitude/ballpark figure:

  • -New residential wood frame construction for single family homes in our area varies between $250-500 psf. (bathrooms and kitchens are 20-40% additional) in our area in 2025. Clearly these costs are heavily influenced by region, demand, new regulations, etc.
  • -Heavy residential renovation  (gutted)  areas that include moving walls, new mechanical, new electrical, new finishes runs about $200-300 psf.
  • -Office space interiors , i.e. tenant fitout with medium level of fixtures, finish and equipment we budget around $150-300 psf.  (Yes it’s a big Ballpark)
  • -One story commercial building $250 sf for core and shell (meaning that the space is raw and awaiting tenant improvements-see above)
  • -Some site improvements include new asphalt for driveways or parking include:  figure $7/psf including decent gravel base and curbs.
  • -Regrading averages very widely due to site characteristics,  but at a minimum of $20,000-30,000 for site work for an medium sized addition in Westchester County NY which would include 2 medium drywells for drainage.
  • Don’t forget a contingency budget of 10% for when things don’t go according to plan!  https://www.houzz.com/discussions/2305349/how-much-to-budget-for-construction-contingency

So start with some graph paper,  count up those squares and start doing the math!or better yet give Steve  a call and let’s talk 914 980 5532…..ask away!

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