Building Regulations 2018

Regulation 79

Side & Rear Setbacks

Building Heights — 3.6 m or less

Choose a mode above to enter either height (mm) or setback (mm).

Building Heights — over 3.6 m but not more than 6.9 m

Choose a mode above to enter either height (mm) or setback (mm).

Building Heights — over 6.9 m

Choose a mode above to enter either height (mm) or setback (mm).

Instructions

  1. Select the relevant height section.
  2. Choose your mode (height → setback, or setback → height).
  3. Click Calculate to see the results.
  4. 3,600 mm and 6,900 mm thresholds are inclusive; use the lower section at the threshold.

Last reviewed: 2025-09-01. Disclaimer: Guidance only. Confirm against current legislation and NCC Vol 2 before relying on results.