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Laneway Homes in King, Ontario: design, permit and build on a single contract. A typical 700 sq ft unit estimates at $269,500-$361,000 (about $385/sq ft), with $9,000-$16,500 including York Region and septic charges in municipal approvals and a May-October construction season.

Detached laneway houses built on the rear of Toronto-area lots with laneway access - a self-contained second dwelling with its own entrance, kitchen and services.
Service area
King, Ontario
York Region
Typical build estimate
$269,500-$361,000
about $385/sq ft in King
Municipal approvals
$9,000-$16,500 including York Region and septic charges
quoted separately from the build
Build season
May-October
150 cm snow · -5.3°C winter avg
Frost depth
1.2 m
footing depth, OBC Part 9
Local market
27,333
residents · walkability 21/100
King Township is almost entirely Oak Ridges Moraine and Greenbelt, with core-area designations that prohibit new building envelopes outright on some parcels. We run a moraine designation check against the property roll number before quoting a King City or Nobleton laneway-suite or garden-suite project, because on a core-area lot the honest answer is sometimes no. King Township permits additional dwelling units, with Oak Ridges Moraine and Greenbelt policies plus private servicing governing the majority of properties.
Estate and agricultural parcels, many over an acre, on private well and septic with moraine core-area restrictions.
A laneway house is only buildable where the rear lane is a registered public right-of-way with the clear width the fire route table demands, so the first thing we measure in King is the lane itself - width, surface, and the unobstructed path from the lane edge to the proposed front door. Servicing runs from the main house, not the lane: water, sanitary and the electrical feed are trenched across the rear yard, which is why the excavation has to land inside the May-October window rather than after it. Two storeys over a 1.2 m frost footing is the usual envelope, with the second floor set back from the lane face to hold the angular-plane limit.
Everything you need to know about our services.
A typical 700 sq ft build in King estimates at $269,500-$361,000 - about $385/sq ft, set by $9,000-$16,500 including York Region and septic charges in approvals, a 1.2 m frost-depth footing requirement and 150 cm of annual snow load. Final pricing follows the site visit.
Related service: Our ADU services
King Township permits additional dwelling units, with Oak Ridges Moraine and Greenbelt policies plus private servicing governing the majority of properties. Approval costs in King run $9,000-$16,500 including York Region and septic charges, quoted separately from construction so the permit stage holds no surprises.
Related service: Our ADU services
Estate and agricultural parcels, many over an acre, on private well and septic with moraine core-area restrictions. King is car-oriented at 21/100 walkability, so parking retention and driveway access constrain the footprint more than the zoning envelope does. We work regularly in King City, Nobleton, Schomberg.
Related service: Our ADU services
Yes - a laneway suite requires frontage on a public lane that meets the emergency-access width, and we confirm that from the municipal lane register before any design work. If your King lot has no qualifying lane, the same rear-yard area usually supports a detached garden suite instead, which is reviewed under the same king township permits additional dwelling units, with oak ridges moraine and greenbelt policies plus private servicing governing the majority of properties pathway.
Related service: Garden Suites
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