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Big Island Building Permit

Hawaii Owner-Builder Permit

Complete Big Island Building Code

 

Big Island Building Code 

Hawaii County Building Code

"INFORMATION SHEET FOR RESIDENTIAL CONSTRUCTION"

NOTE: ALL CHAPTERS, SECTIONS AND TABLES REFERRED TO HEREIN IS THE

(UBC) 1991 UNIFORM BUILDING CODE USED BY HAWAII COUNTY

(Subject to Change)

FOUNDATION

  1. Foundations shall be slab on grade, continuous exterior concrete, or Architect/Engineer designed. Post and pier foundation may be used when the plans are stamped by an Architect or Structural Engineer. (See General Requirements Page 3, Item No. 9) [Section 2907]
  2. Foundation plates or sills shall be bolted with minimum ½" diameter steel bolts embedded at least 7" into concrete or reinforced masonry and not more than 6’ apart and 12" from ends. Manual or power driven fasteners may be used in lieu of anchor bolts when they are of the approved type and used according to the approved report, except for shear walls where bolts must be used. [Section 2907(f)]
  3. Building paper or metal barrier shall be provided between wood and concrete or masonry unless wood is pressure-treated with an approved preservative marked by an approved agency. [Section 2516(c)3]
  4. Minimum foundation posts shall be 4x4 posts and braced both ways. [Section 2507(a)]
  5. Minimum clearance between bottom of floor joists or bottom of floors without joists and the ground beneath shall be 24 inches. Open slat wood decks shall have ground clearance of at least 6" for any wood member. Accessible underfloor areas shall be provided with a 14"x24" access crawl hole. [Section 2516(c)2]
  6. Foundation ventilation shall have a net area of not less than 1 square foot for each 150 square feet of underfloor area. Openings shall be located as close to corners as practicable and shall provide cross ventilation on at least two approximately opposite sides. They shall be covered with corrosion resistant wire mesh ¼" in dimension. [Section 2516(c)6]
  7. No wood shall be nearer than 6" to earth unless Section 2516(c)3 or 2516(c)7 is complied with.

FLOOR AND WALL FRAMING

  1. Solid sawn rectangular lumber beams and joists shall be supported laterally in accordance with Section 2506(h) and 2517(d)3.
  2. Refer to Table No. 25-U-J-1 for allowable joist spans.
  3. Notches on the ends of joists shall not exceed 1/4 the joists depth. Holes bored in joists shall not be within 2" of the top or bottom of the joist and the diameter shall not exceed 1/3 the depth of the joist. Notches in the top or bottom of joists shall not exceed 1/6 the depth and shall not be located in the middle third of the span. [Section 2517(d)3]
  4. Joists under bearing partitions shall be double and of sufficient strength to support the imposed loads. [Section 2517(d)5]
  5. Refer to Table No. 25-S-1 for allowable spans for plywood floors. Refer to Table No. 25-U for allowable spans for 2" T&G decking.
  6. All openings more than 4’ wide in bearing walls shall be provided with proper sized headers or lintels and shall have not less than 1½" solid bearing at each end to the floor or bottom plate. Cripple studs may be used to support headers when connected to double blocking between floor joists with 2½" diameter bolts per stud. [Section 2517(g)5]
  7. Where plywood is used for covering the exterior of stud walls 16" o.c., it shall be of the exterior type not less than 3/8" thick. Siding used for covering the exterior of stud walls shall have a minimum thickness of 3/8" unless placed over approved sheathing. [Section 2516(g)]
  8. Fireblocking shall be provided in all stud walls and partitions, including furred spaces, so placed that the maximum dimension of any concealed space is not over 10 feet. Refer to Section 2516(f) for other requirements.

ROOF AND CEILING FRAMING

  1. Allowable spans for ceiling joists shall be according to Table No. 25-U-J-6 and allowable spans for rafters shall be according to Table Nos. 25-U-R-1 thru 25-U-R-14.
  2. Solid sawn rectangular lumber beams, rafters, and joists shall be supported laterally according to Section 2506(h) and 2517(d)3.
  3. Rafters shall be framed directly opposite each other at the ridge and there shall be a ridgeboard at least 1" nominal thickness at all ridges and not less in depth than the cut end of the rafter. Ridgeboard may be omitted when trusses are designed by an Architect or Engineer, or when lateral bracing is provided at gable ends. [Section 2517(h)3]
  4. Refer to Table No. 25-U for allowable spans for 2" T&G roof decking. Refer to Table No. 25-S-1 for allowable spans for plywood roof sheathing.
  5. Shingles or shakes shall be applied to roofs with solid sheathing. [Section 3204(e)]
  6. Enclosed attics and rafter spaces shall have cross-ventilation. Access to attics with vertical clear height of 30 inches or more shall be provided. Minimum size access shall be 22"x30" and shall be in a hallway or other readily accessible location [Section 3205(a)]

GENERAL REQUIREMENTS

  1. Minimum dimensions and facilities for dwelling: [Section 1207 & 1208]

    NOTE: Habitable Space (Room) is space in a structure for living, sleeping, eating, or cooking.
    1. All dwelling units shall have living facilities, to include provisions for sleeping, eating, cooking, and sanitation. Every dwelling unit shall have one (1) habitable room with a minimum of 120 square feet of floor area. All other habitable rooms, except kitchens, shall have a minimum of 70 square feet of floor area. Habitable rooms other than a kitchen shall not be less than seven feet (7’) in any floor plan dimension.
    2. Room requirements:

      KitchenEvery kitchen shall have a sink, cooking, and refrigeration facilities. Minimum of
      30" clear working space in front of sink, cooking appliance and refrigeration
      facilities are required.

      Bathroom Every bathroom shall have a lavatory, water closet, and a bathtub or shower.
      Each water closet compartment shall not be less than 30" in width and there shall
      be not less than 24" clear space in front of each water closet.

      Dining Minimum of 70 square feet of floor area when another habitable room of 120
      square feet is available in the unit.

      Bedroom Minimum of 70 square feet of floor area when another habitable room of 120
      square feet is available in the unit.
    3. Efficiency dwelling unit is a unit containing only one (1) habitable room and complying to the following:
      1. The unit shall have a living room of not less than 220 square feet of superficial floor area. An additional 100 square feet of superficial floor area shall be provided for each occupant of such unit in excess of two (2).
      2. The unit shall be provided with a separate closet.
      3. The unit shall be provided with a kitchen sink, cooking appliance, and refrigeration facilities, each having a clear working space of not less than 30" in front.
      4. The unit shall be provided with a separate bathroom containing a water closet, lavatory, and bathtub or shower.

        NOTE: All minimum room areas prescribed herein are superficial (clear measurements).
  2. Habitable rooms shall have a minimum ceiling height of 7’-6". The prescribed ceiling height for sloped ceilings is required in ½ of the required floor area. No portion of the room measuring less than 5’ from floor to ceiling shall be included in any computation of the minimum floor area. The prescribed ceiling height is required in ½ of the floor area of rooms with furred ceiling and a minimum of 7 feet for the furred ceiling. [Section 1207(a)]
  3. Habitable and guest rooms shall be provided with natural light by means of exterior glazed openings with an area not less than 10% of the floor area of such rooms and with a minimum of 10 square feet. Natural ventilation by means of openable exterior openings with an area not less than 5% of the floor area of such rooms and with a minimum of 5 square feet shall be provided. In lieu of required exterior openings, a mechanical ventilating system for natural ventilation, capable of providing two (2) air changes per hour may be provided (1/5 of the air supply shall be taken from the outside). [Section 1205(b&c)]

    Bathrooms, water closet compartments, laundry rooms, and similar rooms shall be provided with natural ventilation by means of openable exterior openings with an area not less than 5% of the floor area of such rooms and with a minimum of 1½ square feet. In lieu of required exterior openings, a mechanical ventilating system connected to the outside and capable of five (5) air changes per hour may be provided. The point of discharge of exhaust air shall be at least three feet (3’) from any opening into the building. [Section 1205(c)]
  4. Carport is a private garage which is at least 100% open on one side and with 50% openings on another side or which is provided with an equivalent of such openings on two or more sides. The 50% net openings may be reduced to not less than 25% when cross-ventilation is provided and approved by the Building Official. When attached to a dwelling, a 1-story carport need not have a fire separation, and may have an opening into a room used for sleeping purposes provided such opening is not a required window. [Sections 404 & 1104 amended]
  5. Guardrails shall have a minimum height of 36" when floor height to grade or floor below exceeds 30 inches. Open guardrails shall have intermediate rails such that a sphere 4" in diameter cannot pass through. [Section 1712]
  6. Safety glass and glazing shall be according to Chapter 54.
  7. Cesspools shall have minimum distances from buildings and property lines in accordance with Department of Health’s regulations.
  8. Approved type smoke detector shall be installed in each sleeping room and at a point centrally located in the corridor or area giving access to each separate sleeping area and in each story and basement. [Section 1210]
  9. Plans must be properly stamped and signed by an architect or structural engineer licensed with the State of Hawaii if the principal structural members are of reinforced concrete, concrete masonry, or structural steel and if the structure is on post and pier, regardless of value. This seal of approval is also required for residential structure of more than 1300 square feet of residential use or more than 1800 square feet of residential and accessory uses. In lieu of the above-mentioned professionals, a Civil Engineer licensed with the State of Hawaii may approve retaining walls over six feet in height.
  10. Provisions of the following standards applies to every dwelling when applicable:
    1. Uniform Building Code with Local Amendments
    2. Uniform Plumbing Code with Local Amendments
    3. National Electrical Code with Local Amendments
    4. Outdoor Lighting Ordinance
    5. Hawaii Revised Statutes
    6. Grading and Flood Control Ordinances
    7. Streets and Sidewalks Ordinance
    8. Subdivision and Zoning Ordinances
    9. Public Health Regulations
  11. Separate permits are required for building, plumbing, and electrical work. Plans for building permits shall be submitted in duplicate.

Prescriptive details for hurricane-resistant construction

Big Island Building Permit

Hawaii Owner-Builder Permit

Complete Big Island Building Code