London is a deep market of 422,324 people, 6th of 46 in Ontario and about 3.9% of the provincial roster. Feasibility work in London behaves differently from work in Toronto: fewer precedents, slower comparables, and a London bylaw often written for a smaller city than the one standing today.

London ranks 15th nationally out of 134 rostered markets, in a tier-1 cohort of 15. It is 0.15× the size of Toronto; ignore that gap and a London pro forma inherits demand it does not have.

The nearest Ontario neighbours by size are Hamilton above London and Markham below it. When London comparables run thin — and in a market of 422,324 they usually do — those are the files to pull first, since the governing statute is identical.

Outside Ontario, the closest tier-1 analogues to London are Halifax, NS, Québec City, QC, Surrey, BC. Comparing London to those markets is usually more instructive than comparing it to the nearest city by driving distance, because bylaw generosity follows market size and provincial statute far more reliably than geography.

London has zero promoted zone rows today. The page stays fully usable — calculator, printable summary and deal handoff all work — but London is marked noindex and excluded from the sitemap, because a page with no verified local figure has no business competing in search.

The London rule is identical in all 134 markets: a page is indexable only when the tier gate allows the pair and at least one promoted row backs it. London is tier 1, which admits the full product set.

Corrections on London are welcome and fast. If a figure here is stale, send the City of London — Planning and Development page and it gets re-read; the observation date on each London row states exactly how old the reading is, which is more than most zoning summaries will admit.

Coverage also has a ceiling in ambition, not just in law. There are more zone codes in London than any small team can verify at once, so review is prioritised by the codes most likely to carry a real London project — the mixed-use and multi-unit districts rather than the exhaustive tail.

City of London — Planning and Development zones London under authority granted by the Planning Act. The Zoning By-law must sit inside the Official Plan, so a London site's real ceiling is the more restrictive of the two — the distinction between an as-of-right build and a policy amendment with a multi-year tail.

Two mechanisms cover a London shortfall — a minor variance to the Committee of Adjustment where the miss is marginal, a rezoning where it is structural — with the Ontario Land Tribunal as the forum for a contested outcome. Price the difference explicitly, because the same London envelope achieved by variance and by rezoning are not the same asset.

None of this is uniform inside London. Heritage designations, site-specific exceptions, holding provisions and area overlays sit on top of the base zone and routinely change the answer for one London parcel while leaving its neighbours untouched. Every figure published here is a base-zone figure unless the London source note says otherwise.

Above City of London — Planning and Development sits Ontario, and above the London bylaw sits the Planning Act. When the province moves, London follows on its own schedule; assume the printed London text is the current law only after checking the date on it.

Feasibility in London reduces to arithmetic that is easy to state and easy to get wrong. FSR gives one ceiling on a London lot; geometry gives another, from the setback-and-coverage footprint multiplied by the permitted storey count. Whichever is lower is the London building, and knowing which one it is tells you what to negotiate with City of London — Planning and Development.

As a worked illustration on a 31,000 sf London site at 2.5 FSR, the ceiling is 77,500 sf and roughly 82 units at 800 sf net of an 85% efficiency factor. Substitute the real London figures from the Zoning By-law before treating any of it as a London result.

Get the bind backwards and a London applicant negotiates for a concession that changes nothing. A height-bound London site gains nothing from density bonusing; an FSR-bound one gains nothing from two more metres. Aiming the London ask correctly is worth more than optimising the plate.

Parking quietly kills more London projects than density does. From GFA and unit size the calculator derives London units, applies your ratio and reports the stall count. Each London stall implies excavation, structure and ventilation, and in a market of 422,324 the revenue available to absorb that is thinner than in Toronto.

Before comparing a London figure to one from another province, check the definition. City of London — Planning and Development may exclude parking, mechanical space or below-grade area from the London floor-area calculation, and a 2.0 that excludes those is a materially larger building than a 2.0 that does not.

Height is equally slippery in London. A limit expressed in metres, in storeys, or as a geometric envelope produces different buildings on the same London lot, and the calculator here converts between them using the floor-to-floor figure you supply rather than assuming one.

On small London parcels the setback set usually governs the footprint outright, and the coverage percentage in the Zoning By-law becomes decorative. The calculator shows both so a London user can see which is doing the work.

Set the London average unit size to the product you actually intend to build. Everything downstream — London unit count, stalls, excavation volume — is derived from it, and the default is a placeholder rather than a market figure.

The permitted London envelope and the sellable London envelope are different objects. With 422,324 residents and a 0.15× ratio to Toronto, the London question is rarely how much the bylaw allows — it is how much the market clears in a reasonable delivery window.

Phasing is the usual answer in a market the size of London. Splitting an envelope across stages keeps London exposure proportional to demonstrated absorption, at the cost of losing some efficiency Toronto projects can rely on.

Use the peer table below to test a London assumption before committing to it. Markets of similar tier and population face similar absorption physics, even where their statutes differ from the Planning Act.

The most common way a London feasibility goes wrong is not arithmetic, it is staleness. the Zoning By-law is amended on City of London — Planning and Development's schedule, not yours, so a London figure carried from a file six months old may already be void. The printed summary from this page carries its own date for exactly that reason.

A London error is harder to unwind than a Toronto error. At 422,324 people and 0.15× the provincial leader, the London buyer pool for a compromised entitlement is small enough that pricing is set by whoever shows up.

Treat London output here as a screening tool. Verification with City of London — Planning and Development — and, where the file warrants it, a Ontario planning professional — remains the step that carries legal weight.

The method behind the London page is deliberately boring. Population and rank come from the census roster shared by all 134 markets; the statutory chain comes from the Planning Act; and the London regulatory figures, when any exist, come from a reviewer reading an City of London — Planning and Development page and stamping the date.

Under the gate, London either has a cited figure or it has none. Half-verified London data is treated as no data, and the page carries a noindex directive rather than a hedge.

London outputs carry a provenance label so a reader never has to guess. Observed London values cite a document and a date; modelled values are arithmetic on the numbers you entered, and are presented as such.