DECK PERMIT TIPS. All decks and similar structures must be a minimum distance (setback) from lot lines as defined below:

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1 DECK PERMIT TIPS The zoning requirements for decks, terraces, porches and similar structures vary with the type and manner of construction as follows: The area of all structures on the lot, including but not limited to, decks, garages, the residence, pools, sheds and gazebos may not exceed thirty (30) percent of the lot area in the R-2 zoning district or thirty-five (35) percent of the lot area in the R-3 zoning district. The area of all structures, plus walkways, patios, driveways, storage sheds, stoops and stairs may not exceed fifty (50) percent of the area of the lot. All decks and similar structures must be a minimum distance (setback) from lot lines as defined below: SINGLE FAMILY DETACHED RESIDENCES Lot Line Setback Front, corner side and rear yard 20 feet Side yard 5 feet SINGLE FAMILY ATTACHED RESIDENCES (townhomes, duplexes, multi-family) Lot Line Setback Front, corner side yard 20 feet Side, rear yard 5 feet Side adjacent to attached side of dwelling 0 feet Nonconforming decks may be replaced, provided the existing setback is maintained. Said deck may be extended provided that the extension maintains the required or existing setbacks. Decks and similar structures must not be located on any easement unless letters from all utility companies granting permission to encroach into the easement(s) are submitted with the permit application. (A list of utility companies is available at the Community Development Department.) There must be a minimum distance of ten (10) feet between decks and any structure detached from the residence, except for swimming pools. Decks may not cover a basement escape window Three (3) foot clearance must be maintained in front of the exterior meter base. Hot tubs are considered above-ground pools and must meet the requirements for same. If incorporated into a deck or patio, the design and placement of the deck may be affected. See "Pool and Hot Tub Permit Tips". To avoid unnecessary delays in reviewing permit application submit the following: A copy of your plat of survey accurately indicating all existing site improvements, plus the location and dimensions of the proposed deck and all structures on the lot and the distance from the deck to the lot lines and other nearby structures. A drawing of the side view of the proposed deck showing the ground slope, posts, deck floor and railings and note the height of the floor at the average level of the ground to the top of the deck floor (see attached example)

2 A drawing indicating and explaining: Location, size and spacing of posts, joists and beams. doubled member.); thickness of deck floor and height of stair risers and width of stair treads; stair railing details. Note if the deck is attached or detached from the residence. (Note if beam is a PERMIT FEE: $ Placement/Setback/Lot Coverage questions: Planning & Zoning Division 630/ Construction/Permit questions: Building Division 630/ Please note: Processing time is working days; however, if the application is incomplete the time may be longer. BOLINGBROOK PUBLIC SERVICES & DEVELOPMENT DEPARTMENT 630/

3 CHECKLIST To expedite the review process, please refer to the items listed below when preparing your permit submission: 1. Ledger board should be located a minimum of one and one-half (1 1/2") inches below the interior floor line, nailed sixteen inches (16") O.C., and lagged to the house with a minimum of two (2) one-half (1/2) inch bolts every twenty-four to thirty-two (24-32) inches O.C. (see ledger detail page) Metal flashing must be separated from treated lumber with a membrane (plastic) or spacers. 2. The attachment method for beams and joists that are attached to posts shall be two (2) one-half (½) inch lag bolts minimum per connection. 3. Posts are to be attached to piers minimum of six (6) inches above grade for decks over eighteen (18) inches above grade. Posts supporting structures more than six (6) feet above grade shall be a minimum six (6) inch by six (6) inch nominal lumber. 4. For attached decks, piers are to be a minimum of forty-two (42) inches below grade with a minimum of eight (8) inches diameter; a minimum of ten (10) inches diameter for decks with six by six inch by six (6x6) inch posts. 5. All structural members (joists, beams, posts, etc.) must be of pressure treated or decay resistant lumber. Joist hangers are required for joists; all hardware must be galvanized. All hardware and fasteners must be hot dip galvanized, stainless steel, or triple coated zinc materials. 6. Guardrails are required on decks thirty (30) inches or more above grade. Minimum of thirtysix (36) inches high with no more than four (4) inches in between spindles or balusters. Guardrails for stairs must be a minimum of thirty-four (34) inches high measured vertically from the stair nosing. Horizontal balusters are not permitted. 7. The triangular openings formed by the riser, tread and bottom rail of a guard at the opening side of the stairway are permitted to be of such size that a sphere 6 cannot pass through. 8. Handrails are required for stairs with four (4) risers or more. They must have a cross section of at least one and one-fourth (1 ¼) inches and not greater than two (2) inches (no 2x4s or 2x6s). Ends shall terminate or return into a post. Handrails to be thirty-four to thirty eight (34 to 38) inches in height measured vertically from tread nosing. 9. Maximum riser height for stairs is seven and three fourth (7 3/4) inches. Minimum tread width is ten (10) inches (measured nosing to nosing with a one (1) inch nosing). The tolerance between the largest and smallest risers and between the widest and narrowest tread is three eighths (3/8) inch. Minimum tread width required is ten (10) inches (measured nosing to nosing with a one (1) inch nosing). For stairs more than thirty (30) inches above grade, no more than four (4) inches is permitted between tread openings. 10. For attached decks, stair stringers must rest on concrete piers forty-two (42) inches deep or be attached to posts forty-two (42) inches deep. 11. It is recommended that decking be nailed tight due to shrinkage

4 12. A distance of three (3) feet must be left open in front of the electric pedestal. 13. Escape window wells cannot be covered by a deck. 14. A skirt board enclosing the space cannot be installed prior to a final inspection. 15. Only nails approved for use with joist hangers must be used. Screws are not allowed for use in joist hanger and other bearing locations. 16. A footing inspection is required before piers are poured, and a final inspection is required when the deck is completed. 17. A minimum of hour notice is required for inspections. Call to schedule

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