Splitting a lot means turning one parcel into two, each with its own title. Both new lots must meet the zone’s minimum frontage and minimum lot area, and the split needs approval: a consent or subdivision in Canada, a plat in the US. A big lot is a start, but it is the two minimums that decide.
Imagery: Esri World ImageryHalving the lot down the middle, before access, services and approvals. The lot would need about 2,787 m² (30,000 ft²) and 61 m of frontage to make two SR lots, unless it were rezoned.
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Halve the lot and compare each half to the zone minimums. Here are three real lots.
Frontage is the width of the lot along the street. Lot area is the whole parcel. Most zones set a minimum for both, and a new lot has to meet each one. A wide, shallow lot can pass on frontage and fail on area. A deep, narrow lot often does the opposite.
Lot sizes and minimums from live Bucky snapshots (lot conformity). Only the Vancouver lot clears both. A missing minimum is unknown, not a pass.
On city lots, halving a 9 m frontage leaves 4.5 m, below most minimums.
A quick screen. If the lot is under twice the zone minimum, two equal lots can’t both pass.
One bigger, one smaller lot can work if both still meet the minimums.
Some by-laws set other minimums for corner lots or lots behind another lot.
Canada and the US use different words and different bodies for the same job.
General process only. Fees, notice and timing vary by city. Austin infill plat: City of Austin HOME Amendments page (applications from June 16, 2025). SB 9: California HCD fact sheet.
Some places have cut the minimum lot size, which turns more lots into split candidates.
Sources: City of Austin, HOME Amendments; Texas Tribune and City of Dallas SB 15 information sheet; California HCD, Lot Splits and Duplexes (SB 9). Cedar Park figure from the code as read by Bucky. Check the current local rules before relying on these.
Passing frontage and area gets you to the table. These decide the rest.
Each lot usually needs frontage on a public street, or a lane the city accepts.
Separate water, sewer and power for each lot, and room to run them.
It must still meet its setbacks from the new lot line, or come down.
A tree on the new line can limit where a second house goes.
Flood, ravine or heritage rules can add review or rule a split out.
Parkland fees, development charges and survey costs, before you build.
Not on its own. Each new lot must meet the zone minimums for frontage and area. A 16,000 ft² lot in a 15,000 ft² zone, like the Cedar Park example, can only hold one lot.
In Ontario, a severance (consent) creates one or a few new lots without a full plan of subdivision. A subdivision creates many lots and new roads or services. In BC, most lot splits go through subdivision with the approving officer. In the US, both are done with a plat.
Sometimes, with a variance or a rezoning. In Ontario a consent is often heard together with minor variances for the new lots. Small shortfalls stand a better chance than large ones, and the decision is discretionary.
No. It means the numbers allow it. Access, services, the existing building, trees and overlays still need review, and the city or committee makes the decision. Confirm with a planner or surveyor.
The checker only returns an area comparison where parcel coverage is live and the parcel area and a positive zone minimum are available. An unmapped city can be requested through Parcel Pioneer. A missing rule in a covered city gives an unknown result, not a rejection.
You can try this area screen without an account. A free Bucky account includes 10 site lookups per month in covered cities.
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Bucky reads the zone’s frontage and area minimums for an address and compares your lot.
