Not every internal alteration to an Auckland home requires a building consent. The Building Act 2004 distinguishes between work that needs consent and work that is exempt. Getting this wrong in either direction costs money: unnecessary consent applications waste time and fees; skipping required consents creates problems at resale and can require expensive remediation. Understanding where the line is saves both.

What is restricted building work?

Restricted building work is defined in the Building (Restricted Building Work) Regulations 2011 and covers work that significantly affects the structural integrity, weathertightness, or fire safety of a building. For residential alterations, restricted building work includes: removing or altering a load-bearing wall, installing or altering structural elements including beams, posts, and portal frames, altering the fire separation between units in a multi-unit building, and carrying out work on the primary structure of the roof. Restricted building work must be carried out or supervised by a Licensed Building Practitioner (LBP) and the LBP must provide a Record of Work at the end of the project. This record goes to Auckland Council and is attached to the property file.

Does removing a load-bearing wall always require consent?

Yes. Removing a load-bearing wall is restricted building work and requires building consent. The consent drawings must show how the load is being redistributed: typically a steel or LVL beam on posts transferring the load to the foundation. A structural engineer designs the beam and connection details and provides a producer statement confirming the design. The council inspector will check the beam installation at the framing inspection stage before the linings are closed up.

Identifying whether a wall is load-bearing requires assessment. In a villa or bungalow, the internal walls running parallel to the ridge and perpendicular to the floor joists are most likely to be load-bearing. The walls running parallel to the joists are more likely to be non-structural partitions. An experienced builder or structural engineer can assess this from the framing configuration. Assuming a wall is non-load-bearing without checking is a common and expensive mistake.

What wet area work requires consent?

Creating a new bathroom, ensuite, or laundry in a location that was not previously a wet area requires building consent. This is because wet area construction involves waterproofing that must comply with the NZBC E3 (internal moisture) acceptable solution and must be inspected before tiling covers it. Moving a bathroom within the same approximate location, for example replacing a bath with a shower in the same room, may or may not require consent depending on whether structural work is involved and whether the drainage is being altered.

Any alteration to the drainage system connected to the public sewer requires both building consent and a licensed drainlayer to carry out the work. Watercare's connection standards apply to all work within three metres of a public sewer. A licensed plumber must carry out all sanitary plumbing connections and certify the work with a producer statement.

What internal work does not require consent?

Exempt work under Schedule 1 of the Building Act 2004 includes: painting and decorating, replacing floor coverings, replacing kitchen benchtops and cabinetry without altering the drainage or electrical system, replacing internal doors and windows with the same size, installing insulation in an existing wall or ceiling cavity without structural alteration, replacing like-for-like plumbing fixtures in the same location, and installing shelving, built-in wardrobes, and non-structural fit-out. These are exempt because they do not affect the structure, weathertightness, fire safety, or drainage of the building.

Electrical work is governed separately under the Electricity Act 1992. General electrical work, including adding new circuits, installing new light fittings, and altering the switchboard, must be carried out by a registered electrician and certified with a certificate of compliance. Most electrical work in a renovation does not require a building consent, but it does require electrical certification.

What happens if consent was not obtained for past work?

Work carried out without building consent that required consent is a problem at the point of sale, refinancing, or future renovation. A LIM (Land Information Memorandum) report from Auckland Council will not show this work as consented. A solicitor or bank will query it. The options are: obtain a Certificate of Acceptance from Auckland Council, which requires demonstrating the work complies with the Building Code; or disclose it as unconsented work in the sale agreement and negotiate accordingly. Certificates of Acceptance are not always available, particularly where the work is not accessible for inspection or where it pre-dates current Building Code requirements.

W O Flatz Construction obtains building consent for all work that requires it and manages the inspection process through to CCC. Contact us to discuss what your planned internal alteration involves and whether a consent is needed.