Phase 4 is the northern continuation of a master plan that already has streets, trails, and a neighbourhood-centre pattern on the ground. The Town of Oakville Urban Design Brief (DA-131705) describes a 107-acre (43.4 ha) combined study area organized around a Natural Heritage System corridor, with a future public elementary school and neighbourhood park sited centrally.
Housing in that brief is planned as single detached homes and street townhouses at 2 to 3 storeys. Lot widths for singles are described from about 10.4 m to 15.25 m (roughly 34 to 50 feet), with the low-density area also referenced across a 34- to 65-foot range. A 22-unit street-townhouse block is proposed on the west side of Preserve Drive, south of the future public school — a planning figure, subject to change.
The Neighbourhood Centre to the north is planned for retail and mixed-use potential, giving Phase 4 a walkable commercial edge that many standalone Oakville launches still have to invent. To the south, Phases 1–3 already supply the street grid Preserve North is designed to join. For resale comparables, that south fabric is the first place to look once Preserve North has closings — not a different municipality and not a downtown Oakville condo set.
Named nearby product for context, not as substitutes: Preserve West and East Preserve are the earlier Mattamy phases of the same community. Other North Oakville pre-construction campaigns along Dundas Street West and Sixth Line compete for the same buyer, but they do not share this Phase 4 lot mix or this NHS geometry. Do not import their price lists onto Preserve North.
Site size remains 107 acres (43.4 ha) for the combined Phase 4 study area. That figure is large enough to include NHS lands, a school block, a park, detached lots, and the townhouse block — which is why a unit count for the sales release has not been inferred from acreage on this site.