0BVILLAGE OF NORTHBROOK
Development & Planning Services
1225 Cedar Lane
Northbrook, Illinois 60062
847 664-4050 FAX: 847 272-5068
www.northbrook.il.us
Zoning Worksheet – Residential
New Residence / Addition / Detached Garage / Gazebo / Pool House
Address of Proposed Project____ _ ____ _________________________________________________________________
Type of Project: New Residence Addition Detached Garage Gazebo/Pool House
Zoning Class_______________________ ____ __ R-1 R-2 R-3 R-4 R-5
Lot Area___________________________ ____ ____ _______________________
Setbacks (Yards)_______________________ __
Min./Aver. Setback Req’d (ft)
Side setbacks must equal 25% width of lot
c
______ x .25 = _____ Req’d
C – Vertical/side extension - Side setback may meet the required minimum (not totaling 25% width of lot) with a reduced building height of 27’ (R-5) or 30’ (R-2, R-3, R-4)
Height__________________________ ___ ___ ______ Max. allowed _____ft Stories: Max. allowed ______
Proposed _____ft Proposed _____ft
2BGross Floor Area (FAR)_________________ ______ This section not applicable
40% lot area maximum allowed Allowable Gross Floor Area: __________ x .4 = _________________
Lot Area Max. Allowable Gross Floor Area
Proposed Floor Area Calculation:
Existing (if applicable) (sf)
Basement (if more out of ground than in)
First Floor (including attached garage)
Attic/Third Floor (finished or unfinished – circle one)
(do not include unfinished space in total floor area)
Accessory Structure / Shed
Notes: Each 14’ of ceiling height counts as floor area
The first 200sf in an access. storage structure (other than a garage) is exempted from gross floor area.
Gross Floor Area Ratio: _________ ________ = _________________
Total Floor Areas Lot Area Proposed Floor Area Ratio
3BMaximum Building Coverage____________ __ This section not applicable
35% lot area maximum allowed Allowable Bldg. Coverage: ___________ x .35 = ___________
Lot Area Max. Allow. Bldg. Coverage
Proposed Building Coverage Calculation:
Existing (if applicable) (sf)
New Bldg. Cov. Added (sf)
First Floor (including attached garage)
Accessory Structure / Shed
Building Coverage Ratio: ____________ ________ = _________________
Total Bldg. Areas Lot Area Bldg.Coverage Ratio
4BMaximum Lot Coverage (Impervious Surface) This section not applicable
50% lot area maximum allowed: Allowable Lot Coverage: ____________ x .5 = _____________
Lot Area Max. Allowable Lot Coverage
Proposed Impervious Surface Calculation:
Building footprint (Incl. attached garage)
Total Impervious Surface Areas
Net Increase / Decrease (circle): a – b =
Impervious Surface Ratio: _________________ ___________ = _________________
Total Impervious Surface Areas Lot Area Impervious Surface Ratio