Calgary's inner-city communities have been densifying steadily for over two decades. Older bungalows and character homes on large lots are being replaced by new infill housing, and the pace is accelerating as land values in established neighbourhoods continue to rise. The zoning landscape is also shifting significantly right now: Calgary City Council voted on April 8, 2026 to repeal the blanket rezoning that has been in effect since August 2024, with the revert date set for August 4, 2026. For anyone planning an inner-city project, understanding this transition matters. This is a plain-language guide to what you actually need to know.
What is inner-city infill in Calgary?
In Calgary's context, "infill" typically refers to new residential construction on a previously developed lot within an established neighbourhood, often involving the demolition of an existing dwelling. The most common typologies are single-family replacement dwellings, side-by-side semi-detached pairs, and — increasingly — homes with secondary suites or laneway suites above rear garages.
The City of Calgary has actively encouraged infill as part of its Municipal Development Plan, which targets a significant proportion of new housing growth within existing developed areas rather than greenfield suburbs. This policy direction has made the inner city's permitting framework more receptive to well-designed infill over time, though it remains one of the more complex permit processes in the region.
Key zoning considerations
Calgary's inner-city zoning framework is in active transition right now, and anyone planning an infill project needs to understand where things currently stand. In August 2024, City Council approved blanket rezoning, which changed the base residential designation across most established neighbourhoods from the old R-C1 and R-C2 districts to R-CG (Residential Grade-Oriented). R-CG allows a broader range of housing types on a single parcel, including semi-detached homes, rowhouses, and townhouses of up to four units, without requiring a separate land use redesignation application.
However, on April 8, 2026, Calgary City Council voted 12-3 to repeal blanket rezoning following eight days of public hearings. The repeal takes effect on August 4, 2026. Until that date, R-CG remains the applicable zoning for most inner-city parcels, and development permits submitted under R-CG before the repeal takes effect will retain their R-CG entitlements. Properties will then revert to the zoning districts that existed before August 2024 — primarily R-C1 and R-C2 — at which point rowhouses and townhouses will once again require a land use redesignation approved by City Council before a development permit can be issued.
What this means in practice: if you are considering a rowhouse, townhouse, or multi-unit infill project in Calgary, the window to submit a development permit under R-CG rules closes on August 4, 2026. A single-family replacement dwelling or semi-detached pair will remain straightforwardly approvable after that date, as both were permitted under the original R-C1 and R-C2 zoning as well. Anonymous Architecture can help you assess what your specific parcel allows under both the current and post-August framework.
The development permit process
Most new infill homes in established Calgary communities require a development permit before a building permit can be issued. Development permit review times for straightforward residential infill have ranged from 6 to 16 weeks in recent years, depending on application volumes and whether the proposal triggers neighbour notification. Projects that do not comply with all contextual rules — even in minor ways — can require a development variance permit, which adds public notice requirements and additional review time.
A well-prepared application, with a design that has been checked against the applicable Land Use Bylaw before submission, is the most reliable way to keep the process moving. Incomplete applications or designs that have not been properly zoning-checked are the most common source of delays. Anonymous Architecture prepares permit packages as a standard part of project delivery and coordinates directly with the City on any outstanding questions.
Design considerations specific to Calgary infill
Calgary's contextual zoning framework means that architectural design decisions have direct regulatory implications. The height of the adjacent house to each side affects the maximum allowable height of the new building. The predominant front setback on the block affects how far forward the new house can sit. The existing streetscape — whether it reads as predominantly vertical or horizontal, whether garages are front-facing or rear-accessed — shapes what the City will find acceptable.
This regulatory sensitivity to context is actually a useful design discipline. The best Calgary infill homes are not houses that ignore their neighbourhood — they are houses that understand their neighbourhood clearly enough to contribute something new without disrupting what already works. The KASA project in Mount Pleasant, the Parkdale House, and the North Glenmore House in our portfolio each represent specific responses to their particular streets and blocks.
Secondary suites and laneway housing
Calgary's rules around secondary suites and laneway suites have evolved considerably. A legal secondary suite within the main dwelling is permitted in most inner-city zones, subject to specific requirements around ceiling heights, egress windows, and separate utility metering. A laneway suite above the rear garage — a separate dwelling unit accessed from the back lane — is permitted in many inner-city zones as well, and adds rental income potential and property value that often justifies the additional construction cost.
The Brick House project in our portfolio was specifically designed around the inclusion of a laneway suite, with the primary home's massing and material palette extended to the rear garage and suite above in a way that makes the whole assemblage read as a coherent architectural proposition rather than an afterthought.
What to look for in an architect for a Calgary infill project
Specific experience with Calgary's Land Use Bylaw and development permit process matters more for infill than for almost any other project type. An architect who has navigated R-C1 and R-C2 contextual zoning, worked with the City's Urban Design team on variance applications, and produced construction documents for Calgary's specific trade environment will save time and reduce surprises in ways that are hard to predict from a fee comparison alone.
Portfolio is the best guide. Look for built infill projects in comparable neighbourhoods, and ask specifically about projects where the design process encountered regulatory complexity. How a firm handles the difficult cases is more revealing than how it handles the straightforward ones.