Policy & Zoning | Neighbourhood Zones

Ottawa's N1–N4 Neighbourhood Zones

Ottawa Zoning By-law 2026-50 replaced the old building-type R-zones with size-based Neighbourhood zones, N1 through N4. Your lot's N-zone sets how many units and how much height your multiplex can have. Find your zone first; everything else follows from it.

The Four Zones

Zone	Role	Units / building	Height
N1	Lowest-density neighbourhood core	Up to 4	≈ 11 m (about 3 storeys)
N2	Neighbourhood edge / slightly more density	Up to 6	≈ 11 m (about 3 storeys)
N3	Neighbourhood general / low-rise apartment	Up to 10	Low-rise, taller than N1/N2
N4	Higher-density near transit and urban cores	Mid-rise apartment scale	Mid-rise

Unit caps and heights summarize the size-based Neighbourhood zones in By-law 2026-50. Confirm the exact schedule for your parcel on geoOttawa and the City by-law page.

Old R-Zone → New N-Zone

If you knew your lot's old residential zone, this is roughly where it lands now. The mapping is approximate — location and overlays shift some lots — so always confirm on geoOttawa.

R1 — Residential First Density (detached) → N1 — lowest-density neighbourhood core

R2 — Residential Second Density (semi) → N1 / N2 — depending on location

R3 — Residential Third Density (townhouse) → N2 — neighbourhood edge

R4 — Residential Fourth Density (low-rise apt) → N3 — neighbourhood general / low-rise apartment

R5 — Residential Fifth Density (higher) → N4 — higher density near transit

Best For

✓ Translating a lot's old R-zone into its new N1–N4 Neighbourhood zone.
✓ Seeing the unit count and height each Neighbourhood zone allows.
✓ Knowing which zone you need before assuming a multiplex size.

Usually Fails When

✕ You rely on the R-to-N mapping without checking geoOttawa — overlays and location move some lots.
✕ You read the unit cap as guaranteed buildable — lot standards still govern what fits.

What To Verify Before Spending Money

→ Your parcel's N-zone on geoOttawa under the New Zoning By-law 2026-50 layer.
→ The lot-area, frontage, and height schedule attached to that zone.
→ Any overlay (heritage, flood, transit) that modifies the base zone.

Frequently Asked Questions

What are Ottawa's N1, N2, N3, and N4 zones? +

They are the new size-based Neighbourhood zones in Ottawa Zoning By-law 2026-50. N1 is the lowest-density neighbourhood core (up to four units), N2 is the neighbourhood edge with more density (into the six-unit range), N3 is neighbourhood general allowing low-rise apartments (about ten units), and N4 is higher-density near transit at mid-rise scale.

What zone replaced R1 in Ottawa? +

The old R1 residential zone generally maps to the new N1 Neighbourhood zone — the lowest-density category, which still permits up to four dwelling units as-of-right on a serviced lot. The exact new zone for any parcel is shown on the City's geoOttawa map under the New Zoning By-law 2026-50 layer.

How do I find my lot's Neighbourhood zone? +

Open geoOttawa, search your address, and enable the New Zoning By-law 2026-50 layer. It shows your N-zone and the schedules that set lot area, frontage, height, and unit count. That zone determines how large a multiplex you can build as-of-right.

Why did Ottawa switch from building-type zones to size zones? +

Building-type zoning fixed what form was allowed — detached, semi, townhouse — which blocked multiplexes even where they would have fit. Size-based Neighbourhood zones regulate the envelope (units, height, lot coverage) and let the builder choose the form, which is what re-legalizes the missing middle.

Official Sources Referenced

City of Ottawa: New Zoning By-law 2026-50

https://ottawa.ca/en/planning-development-and-construction/zoning/new-zoning-law

City of Ottawa: New Zoning By-law (Engage Ottawa)

https://engage.ottawa.ca/zoning

Bill 23, More Homes Built Faster Act, 2022 (full text)

https://www.ola.org/en/legislative-business/bills/parliament-43/session-1/bill-23

Province of Ontario: More Homes Built Faster Act overview

https://www.ontario.ca/laws/statute/s22021

City of Ottawa: geoOttawa interactive zoning map

https://maps.ottawa.ca/geoottawa/

Coming to Ottawa

Get Early Access When VanPlex Launches in Ottawa

We model missing middle multiplex feasibility lot-by-lot. Join the Ottawa early-access list and we'll tell you what your lot can build under Zoning By-law 2026-50 the day Ottawa goes live.