Registrant Project Requirements:
Creation and Alteration of Habitable Apartments In Basements or Cellars of 1- and 2-Family Buildings (Local Law 49 of 2019): Work & Inspections

Special Inspections

As per Chapter 17 of the Building Code, alteration work may require certain Special and Progress Inspections to be performed during and at the end of construction as outlined in the table below. Prior to Approval, the Applicant of Record is required to identify all required Special and Progress Inspections per BC 1704.1. Prior to DOB permit issuance, the owner must typically engage a registered Special Inspection Agency (SIA) who will take responsibility for the Special and Progress Inspections. The applicant of Record may perform these inspections if they are also an SIA. Inspection discrepancies and hazardous conditions shall be reported to the super-intendment of construction, as well as to the site safety coordinator or site safety manager, for correction, per BB 2016-006 and 1 RCNY 101-06. Per BC 1704.1.2, the contractor cannot hire the special inspector.

Based on the scope of work, an alteration project may be required to comply with the following Special and Progress Inspection requirements:

Structural Steel

May include steel welding, High Strength Bolting, Cold Formed Steel, and Steel Details (BC 1704.3).

Concrete – Cast-In-Place

Required where the total concrete placement on a given project is more than 50 cubic yards or other conditions BC 1704.4. Also see BC 1905.6 and BC 1905.3, and BC 110.3 and BC 1913.10.

Subgrade Inspection, Subsurface Conditions, Borings and Test Pits

Subject to Special Inspections in accordance with Section BC 1704.7

Structural Stability – Existing Buildings

Alteration of existing structural systems or elements, such as columns, beams, bearing walls, etc. where the stability or integrity of a structural system is to be temporarily diminished, in accordance with Sections BC 1704.20.6 through BC 1704.20.10

Excavations – Sheeting, Shoring, Bracing and Underpinning

Methods employed to protect the sides of excavations, or to protect adjacent underpinned structures, shall be subject to Special Inspections in accordance with BC 1704.20.2 through BC 1704.20.10 and BC 1814.


Load bearing masonry, glass unit masonry and masonry veneer shall be inspected and verified in accordance with the requirements of BC 1704.5.1 through BC 1704.5.3, depending on the structural occupancy category of the building or structure

Vertical Masonry Foundation Elements

Are subject to Special Inspections in accordance with BC 1704.9.

Exterior Insulation and Finish Systems (EIFS)

All EIFS applications installed more than 15 feet above adjacent finished grades and alterations to existing EIFS installations more than 15 feet above adjacent finished grades shall be in accordance with BC 1704.13.

Mechanical Systems

Mechanical systems requiring a certificate of compliance in accordance with AC 28-116.4.1 shall be inspected for conformance with the approved construction documents as per BC 1704.16.

Sprinkler Systems

Sprinkler systems shall be inspected in accordance with BC 903 and BC 1704.23. See Sprinkler project guideline.

Heating Systems

New heating systems shall be tested in accordance with BC 1704.25. See Mechanical project guideline.


Chimneys shall be subject to a special inspection in accordance with BC 1704.26.

Fire-resistant Penetration and Joists

Special Inspections for penetration of fire-resistant elements and assemblies; and related fire-stops in accordance with Sections BC 1704.27.1 and BC 1704.27.2.

Post-Installed Anchors

The installation of post-installed mechanical anchors, adhesive anchors, and screw anchors shall comply with Table BC 1704.32. The special inspection shall include the verification of compliance with approved construction documents and standards established by the commissioner pursuant to AC 28-113.2.2 of the Administrative Code and BB 2014-018 and BB 2014-019.

Concrete Design Mix

Concrete mix designs shall be in accordance with BC 1905.3 and 1913.5 (former TR 3 form).

Concrete Sampling and Testing

Concrete sampling and testing shall be in accordance with BC 1905.6 and BC 1913.1.10 (former TR 2 form).


Preliminary inspections shall be in accordance with AC 28-116.2.1 and BC 110.2.

Footings and Foundation

Footing and foundation progress inspections shall be made after excavations for footings are complete and any required reinforcing steel and required forms are in place as per BC 110.3.1.

Structural Wood Frame

Structural wood framing shall be in accordance with BC 110.3.3.

Fire-Resistance Rated Construction

Fire-resistance-rated partitions, floors, ceilings, shafts, and shutters as per BC 110.3.4.

Alternative Materials

Alternative materials shall be in accordance with BC 1704.14

Energy Code Compliance Inspections

Progress and Special Inspections:

  • Protection of exposed foundation insulation
  • Insulation placement and R values
  • Fenestration u-factor and product rating
  • Fenestration air leakage
  • Fenestration areas
  • Air sealing and insulation - visual
  • Shutoff dampers HVAC insulation and sealing Electrical energy consumption
  • Interior lighting power Penetrations through thermal envelope: must be sealed to minimize air leakage as per 2016 NYCECC R402.4 and C402.5.1.
  • Dampers integral to building envelope: outdoor air dampers must close when system is off.
  • HVAC & Service Water heating equipment: meets sizing and efficiency requirements as per 2016 NYCECC Tables C403.2.3(1) through C403.2.3(7)and Table C404.2.
  • HVAC & Service Water heating system controls: applicable part-load, reset, temperature controls as per NYCECC C403.2.4 and C404.6.
  • Piping insulation: minimum thickness of 1” to 5”, required on piping carrying fluids >105F as per NYCECC Table C403.2.10 and C404.4.
  • Maintenance Information: shall be furnished for installation of new equipment as per NYCECC R303.3 and C303.3.
  • Permanent Certificate: shall list type and efficiency of heating, cooling, and/or service water heating systems as per NYCECC R401.3.
  • Electrical Energy [metering] Consumption: The presence and operation of individual meters or other means of monitoring individual tenant spaces and apartments shall be verified by visual inspection per 1 RCNY 5000-01(h)1 & 2 – IC1, IIC1, and NYCECC C405.6 and C405.7

Required Inspections

In accordance with AC 28-116.2 and BC 110.1, DOB requires inspections at various stages of completion during alteration work, as well as at final completion. Based on the scope of work, the following inspections from different DOB Inspection Units may be required:

  1. Construction Inspections
    1. Footing and Foundation Inspection
    2. Framing Inspection
    3. Insulation Placement Inspection
    4. Final Inspection

  2. Plumbing Inspection - Work Progress and Final Inspection

  3. Fuel Gas Inspections - including gas piping roughing

  4. Oil Burning Equipment

  5. Electrical Inspection – Final Inspection

Contractors and property owner shall make sure to schedule and complete all of the required DOB Inspections. Prior to scheduling an inspection, Contractors must:

  • Confirm that all construction work completed matches the most current approved drawings, and that such drawings are on site
  • Periodically check that no safety hazards exist on the active construction project.
  • Confirm that work complies with Code and other requirements.
  • Confirm that Energy Code requirements are met.

Contractor Self-Certification of Inspections

Plumbing, sprinkler, gas, and/or standpipe contractors have the option to either require a DOB Inspection or submit a self-certification of the completed work. Such contractors opting to self-certify must submit a notice of intent to self-certify, with the dates of these self-certified inspections to DOB, and follow-up with the submission of results for self-certified inspections. The following inspections may be self-certified:

  • Plumbing - Work Progress and Final Inspection
  • Sprinkler work, if tapped off of domestic line, as allowed by AC 28-401.3 - Work Progress and Final Inspection

DOB Inspection Units conduct a random audit of all self-certified notices to ensure compliance of inspected work with Code and regulations.

Other Regulations

  • Submission of Special Inspections can be done online by Special Inspection Agency.
  • DOB inspections may be required during various project stages. Such inspection requests may be made online, and any objections raised may be resolved on-line.
  • If the applicant elected to self-certify the required DOB inspections, an online notice of intent to self-certify must have been submitted at the project start. Such self-certified inspections may be audited; audit results will be provided to applicant and must be resolved prior to final sign-off.
  • Depending on the above, DOB or the applicant shall complete the final sign-off inspection to close the project.
  • If the completed project has changes that are not minor, an “As-Built” submission shall be allowed. The applicant must submit revised “As-Built” drawings prior to project sign-off.

Inspection Requests

An online tool for scheduling appointments for required DOB inspections must be used. This system, DOB NOW: Inspections provides the ability to request and cancel appointments online, as well as view inspection results and documentation.

Additional Requirements for Registrant

Helpful Links