Neighbourhood 1
Lower-intensity neighbourhood form. Table 801A uses a density factor of 0.8 units per 100 square metres, with a maximum of 4 units per building and a listed max height of 11 m.
Reference · 2026 by-law (Document 1A)
Ottawa neighbourhood zones (N1–NU)
Short notes on what the N-codes usually imply. It’s orientation only—your parcel string, overlays, and exceptions still run the show.
Reading a zone string
Something like N2B[641] H(8.5) breaks down as: primary N2, subzone B, exception [641], suffix H(8.5). Overlays can override pieces of the base table.
Neighbourhood rules layer: primary code + A–F subzone + any exception/suffix/overlay. Skip any one of those and you’re guessing.
Primary N codes
Neighbourhood family. Numbers below come from Table 801A where noted; always confirm the full string for your lot.
Neighbourhood 2
Moderate missing-middle intensity. Table 801A uses 1.5 units per 100 square metres, with a maximum of 6 units per building and a listed max height of 11 m.
Neighbourhood 3
Higher missing-middle intensity in the neighbourhood family. Table 801A uses 2.2 units per 100 square metres, with a listed cap of 10 units per building and a max height of 11 m (special vertical-attachment note applies).
Neighbourhood 4
Transition to larger built form. The Table 801A density row is handled differently than N1-N3, and listed maximum height is 14.5 m.
Neighbourhood 5
Higher-intensity neighbourhood context where listed maximum height is 30 m. Unit controls are not the same simple N1-N3 density formula.
Neighbourhood 6
Specialized neighbourhood context where height is tied to suffixes or schedules. Always confirm the full code and schedule references before relying on base assumptions.
Neighbourhood Unserviced
Neighbourhood zoning in unserviced areas. Servicing status materially affects feasibility and can cap unit outcomes; this code needs careful review of infrastructure constraints.
Related Families
NMU (Neighbourhood Mixed Use) and MS (Mainstreet) are separate from N1-N6/NU but often relevant for intensification strategy depending on address and planning context.
Subzones A–F
Lot width and yard tables—same letters across N1–N6, different numbers per row.
Subzone A
Smallest lot profile in the A-F set (minimum lot width 6.0 m). Front yard and exterior side yard values are at the compact end of the spectrum.
Subzone B
Minimum lot width 7.5 m. Frequently seen in practical examples like N2B; interior side yard totals and per-side minimums still apply.
Subzone C
Minimum lot width 10.0 m with generally larger yard requirements than A/B. Often shifts envelope assumptions if you are modeling additions or unit count increases.
Subzone D
Minimum lot width 15.0 m and larger baseline setbacks than A-C. This changes feasible massing and where usable depth remains after yards are applied.
Subzone E
Minimum lot width 18.0 m. Includes additional built-form constraints such as listed maximum building width values in Table 801B.
Subzone F
Largest lot profile in the A-F set (minimum lot width 24.5 m). Carries the broadest spacing requirements and distinct dimensional controls.
Other codes you’ll see
Mixed-use, industrial, open space, older layers—still in GIS and PDFs. Read the full code; the label alone isn’t enough.
Corridor / commercial mixed 1
In Zoned’s cap logic, units are allowed with no base table cap; height, setbacks, schedules, and site plan still govern what actually fits.
Corridor / commercial mixed 2
Same broad idea as CM1 here—don’t read that as “unlimited units,” read it as “check everything else.”
Village + subzone
Parent V1, modifier M. Pull the exact V1M row; metadata summaries aren’t the by-law.
Mainstreet & general mixed-use
Street-facing mixed use; which family you’re in changes frontage and use expectations.
Centre / downtown mixed-use
Often schedule-heavy for height and form. The two letters are a start, not the whole story.
Industrial
Employment-first. Assume no housing unless something explicit says otherwise.
Open space / environmental
Parks, buffers, protected land—usually a hard no for anything like a standard infill house.
Institutional
Schools, civic, worship, health. Residential only if the by-law actually says so for that parcel.
Not legal advice. Confirm the full string (e.g. N2B[641] H(8.5) S322), overlays, and the current city text for your lot.