Building Codes


Before issuing the building permit, the building department usually verifies that the plans conform to all applicable codes and regulations, including applicable building codes.Before starting construction on a new building or altering an existing building, you must first secure a building permit at the local Department of Buildings.  Before issuing the permit, the Department of Buildings verifies that the plans conform to all applicable codes and regulations, and that the plans meeting zoning and other codes.  A Building Inspector from the local Department of Buildings may periodically check the site as construction progresses.  When the construction is completed, the Building Inspector performs a final inspection.  If the construction passes the final inspection, a Certificate of Occupancy is issued.


Building Permit

An application for a building permit is filed with the local building department.If you are constructing a new building or altering an existing building, you are required to obtain a building permit.  An application for a building permit is filed with the local Department of Buildings.  This application may require plans be filed, site studies be conducted, etc.  The Department of Buildings either issues a permit, recommends changes to the plan that will allow a building permit to be issued, or denies the application.  No work may begin until the Department of Buildings issues the building permit.

You generally do not have to obtain a building permit to make normal repairs, although there are exceptions to this rule.  Additions, finishing an attic or basement, or changing interior walls are examples of alterations that require a building permit.  A wood-burning stove or an indoor hot tub typically require a permit.  Exterior additions such as a deck, pool, fence, shed, or garage typically require a building permit.  The following type of work often needs a building permit:

  • New construction.
  • Alteration of an existing building.
  • An addition to an existing building.
  • Change in use of a building.
  • Cutting of part or all of a wall or partition.
  • Removal or cutting of any structural beam or bearing support.
  • Removal or change of any required means of egress.
  • Work affecting structural or fire safety.
  • Work that increases the nonconformity of an existing building.
  • Work that affects public health or safety.

You should contact the local Department of Buildings to see if a building permit is required for your planned construction or alteration.


Department of Buildings

The local Department of Buildings performs many functions.  Some of the functions include:

  • Building permit application and plan review.
  • Issuing building permits for approved plans.
  • Providing information to contractors, Licensed Professional Engineers, Registered Architects, and the public on applicable building codes and other regulations.
  • Providing advice to other municipal agencies regarding building codes and other applicable regulations.
  • Dispatching the Building Inspector to review construction at the appropriate times.
  • Reviewing changes proposed during construction.
  • Performing the final inspection when construction is completed.
  • Issuing a Certificate of Occupancy when all construction requirements have been met.
  • Maintaining records on all construction within the municipality.
  • Enforcing regulations and issuing violations when appropriate.

Building Code

The building code sets the minimum construction standards for a house or building.  Because of the way that building codes have evolved over the years, the minimum building code standards are usually sufficient.  Exceeding the minimum building code requirements does not necessarily give you a better building.  Often, exceeding the requirements will just increase construction costs and delay construction.

The State of New York and the City of New York have their own building codes, although there are many similarities.  Many local communities have amended the state codes.  For more information, visit the International Code Council web site.  You can also find information about the City of New York Building Code and the State of New York Building Code.  Note that these codes apply to new buildings, and may or may not apply to existing construction.  Remember to contact your local Department of Buildings for information on the exact codes that apply in your community.


Building Inspector

The building inspector performs many functions:


Certificate of Occupancy

Certificate of OccupancyWhen all the requirements of the building code and all other local municipal requirements have been met, a Certificate of Occupancy is issued.  The Certificate of Occupancy generally means that the building complies with all  codes and regulations applicable at the time of construction.

Prior to issuing the Certificate of Occupancy, a building inspector has probably checked the construction project several times during the project.  Even so, the Certificate of Occupancy is not a guarantee from the Department of Buildings that the building is perfect.  The inspection is limited to areas that could be examined during the building inspector's inspection.  The Certificate of Occupancy gives you some assurance that the building complied with applicable codes and regulations at the time of construction.

Many banks and lending institutions require an up-to-date Certificate of Occupancy before they will issue a mortgage.  In some cases a Certificate of Occupancy cannot be issued because no building permit was issued prior to construction, and the building inspector was not called in during construction.  In these cases, the Department of Buildings may issue a Certificate of Alteration, Certificate of Compliance, or Certificate of Completion.  A similar document may be issued for outside items like decks and pools, or inside items like a wood burning stove.  Consult your local Department of Buildings for more information if you are looking at a building that has been altered.


Fire Prevention

Many of the building code sections were written in response to injuries or deaths that occurred during a fire or other catastrophic event.Contrary to popular belief, the building codes are not an instruction manual of how to construct a building.  Little is said in the building code on issues such as what size or type of nails should be used, required wood sizes, etc.  Much is said about issues such as required fire rating, required exits, exit lighting, etc.

Many of the building code sections were written in response to injuries or deaths that occurred during a fire or other catastrophic event.  Other sections of the building codes deal with life safety issues, hazardous conditions, required ventilation, lighting, etc.  For more information on fire protection and life safety, visit the National Fire Protection Association (NFPA™) web site.

If one were to use the building code as a manual of how to build, the resulting building would have many problems.  While the building code is essential information to anyone building a home, It should be viewed as a reference document and not a how-to book.


Heimer Engineering PC performs pre-purchase home, building, condominium unit, and co-op unit inspections, and provides other Engineering services.  Heimer Engineering PC only provides Engineering services in the State of New York.  Heimer Engineering PC does not provide contracting, construction, building, or repair services.  Heimer Engineering PC is not associated with any contracting, construction, or repair company.  This helps assure you of unbiased professional advice.