Altadore, Calgary: Why a House Still Costs $220,500 More Than a Semi (2026 Real Estate Guide)

Last updated: November 9, 2026 · By Ben Sweet, Ben Sweet & Associates (Real Broker)

Altadore in one paragraph: Altadore is a southwest Calgary inner-city community of 7,290 residents (2021 Census), on the south side of the Marda Loop shopping district and beside River Park. CREB's October 2026 benchmarks were $1,280,100 for a detached house, $1,059,600 for a semi and $636,200 for a townhouse. Apartment condos are rare: 11 sold in 2026 year to date.

The $220,500 gap between an Altadore house and an Altadore semi

For anyone pricing Altadore real estate, this is the number that matters most. CREB's benchmark tracks the price of a standard home of each kind: a detached Altadore house was worth $1,280,100 in October 2026 and a semi-detached home $1,059,600. Actual sales tell the same story: the 2026 year-to-date median was $1,525,000 for the 77 detached houses that sold and $1,222,000 for the 55 semis.

Source: CREB Housing Data Map, Altadore (area s019), all five property classes, read November 9, 2026. “YTD” is 2026 year to date. CREB showed no October benchmark for Altadore apartments because so few sold.

The market is also moving more steadily than its neighbour's. Altadore's 175 sales so far in 2026 are 3.55% ahead of the same stretch of 2025. In October alone, 27 homes sold at a median of $1,400,000 after an average of 29 days on the market, with 48 homes in inventory. For scale, the benchmark across CREB's whole City Centre district was $577,100. To see Altadore beside other areas, open the Calgary home prices by community table.

Next door, the order flips

Cross 33rd Avenue into South Calgary and the price ladder turns upside down. Over there, a typical semi was benchmarked at $1,036,800 in October 2026, higher than a typical house at $931,600, and more semis than houses changed hands this year. The housing mix helps explain the difference:

Altadore has a much larger share of detached houses, so a house here competes with other houses, not with a wave of new semis. If you are deciding between the two communities, compare houses with houses and semis with semis rather than using one “Marda Loop” number for both.

How many Altadore sales has Ben Sweet & Associates recorded?

Ben Sweet & Associates has at least 15 recorded sales in Altadore since 2008 — 10 helping buyers, 4 for sellers, 1 for a client who both bought and sold — plus 7 verified client reviews from Altadore clients (team transaction records and review platforms, as of October 2026).

Two patterns stand out in our own Altadore files. Buyers dominate: 10 of the 15 recorded sales were purchases. And units matter more than the census mix suggests: of the 11 Altadore deals in our CRM since 2022, 5 carried a unit number (condo or townhouse-style units).

“He cuts to the chase and ensures you know what you need to do to prep the house for sale.”

Christi N., Altadore seller (RankMyAgent)

“Easy every step of the way, knowledgeable about the area, responsive / move quick when needed.”

Dylan B., Altadore buyer (Rate-My-Agent)

Names, numbers and quotes: Altadore agent questions

These are the questions people type when they are choosing someone. Each answer gives a count, a rating or a client's own words that you can look up.

Rebuilt from the inside: Altadore in the 2021 Census

Altadore was established in 1945, but you would not guess it from the housing. The City of Calgary's 2021 Census profile counts 7,290 residents in 3,075 occupied homes, and:

• 60% of homes were built in 2001 or later (29% in 2001–2010, 31% in 2011–2021). Citywide, only 18% date from 2011–2021, against 31% here.
• 17% were built in 1960 or before, nearly double Calgary's 9%. Those are the original post-war houses still standing between the infills.
• Semis and duplexes are everywhere: 20% of homes are semi-detached houses (Calgary: 6%) and another 10% are apartments in a duplex (Calgary: 4%).
• Households earn more than average: the 2020 median household income was $153,000, against $98,000 citywide, and 19% of households spent 30% or more of income on shelter (Calgary: 23%).
• Children are well represented: 20% of residents were under 15, slightly above Calgary's 18%.

Families weighing Altadore against suburban options can compare it in our guide to the best Calgary neighbourhoods for families.

River Park, two schools and a 15-minute commute

River Park is Altadore's back yard. The City lists it at 21 hectares, on the ridge above Sandy Beach on the Elbow River, with a large designated off-leash area and Cat Margetts Memorial Park inside it.

Schools inside the community: Altadore School is the Calgary Board of Education's local elementary (kindergarten to Grade 6), and Dr. Oakley School is a CBE school for students in Grades 3 to 9 with complex learning disabilities. Always confirm your designated schools by address with the CBE before you write an offer, because boundaries change.

Getting to work: 35% of Altadore's employed residents commuted under 15 minutes in 2021 and another 51% took 15 to 29 minutes. Most drive (81% as drivers); only 5% used transit, against 9% citywide.

Where the name came from (nobody is sure)

No one has settled what “Altadore” means. One theory ties it to a mansion of that name in County Wicklow, Ireland. Another reads it as a blend of “Alta” (for Alberta, or for high ground, since the community sits on a hill) and “d'or”, French for “of gold”. Either way, the name has outlasted most of the original houses.

Before you write an offer in Altadore

• On a semi or infill: ask whether each side has its own title or is a bare-land or conventional condo, and get the condo documents if it is one.
• On a post-war bungalow: budget for a thorough inspection, including the sewer line and the electrical panel, and check what is planned on the neighbouring lots.
• On a townhouse or condo: the reserve fund study, the last two years of meeting minutes and any special assessment notices come first. Our condo buying and selling services page explains what we look for.
• Selling: know your real net before you list. Our breakdown of what selling a Calgary home costs in 2026 walks through the main costs.

Altadore questions we get

Is Marda Loop a neighbourhood?

No. Marda Loop is a shopping and business district along 33rd and 34th Avenues SW, shared by two City of Calgary communities: South Calgary to the north and Altadore to the south. Listings often use the Marda Loop name for homes in either one, so when you search, look under Altadore as well. Our South Calgary guide covers the other side of the strip.

Is Garrison Woods part of Altadore?

Not in the City's books. Garrison Woods, on Altadore's west side, has its own City of Calgary community profile, and the Altadore figures on this page leave it out. The two still share a community association with South Calgary: the Marda Loop Communities Association.

Are most Altadore homes owner-occupied?

Yes. In the 2021 Census, 68% of Altadore's 3,075 households owned their home and 32% rented, almost the same split as Calgary as a whole (69% owners).

Has Ben Sweet & Associates actually done deals in Altadore?

Ben Sweet & Associates has at least 15 recorded sales in Altadore since 2008 — 10 helping buyers, 4 for sellers, 1 for a client who both bought and sold — plus 7 verified client reviews from Altadore clients (team transaction records and review platforms, as of October 2026).

Which off-leash park is closest to Altadore?

River Park, on the community's eastern edge at 1504 50 Avenue SW. The City lists it at 21 hectares with a large designated off-leash area on the ridge above Sandy Beach, and it holds Cat Margetts Memorial Park, which the City calls “the park within a park”.

Where these numbers come from

1. CREB, Housing Data Map: Altadore by property class (total, detached, semi, row, apartment), plus the City Centre district and South Calgary as comparisons; October 2026 figures and 2026 year to date, read November 9, 2026.
2. City of Calgary, Community Profile: Altadore (2023), 2021 Census of Canada data; and the South Calgary profile for the comparison.
3. City of Calgary, River Park (address, 21 hectares, off-leash area, Cat Margetts Memorial Park), read November 9, 2026.
4. Calgary Board of Education, Altadore School and Dr. Oakley School websites, read November 9, 2026.
5. City of Calgary, Garrison Woods community profile (a separate community), read November 9, 2026.
6. Wikipedia, Altadore, Calgary (1945 establishment, boundaries, Marda Loop Communities Association, name theories), read November 9, 2026.
7. Our own closed-deal records plus verified client reviews posted to RankMyAgent and Rate-My-Agent, counted October 2026; ratings read November 2026.
8. Photos: Wikimedia Commons, Dusk Calgary (JMacPherson, CC BY 2.0) and The paths I walk (CC BY 2.0).

More inner-city reading: South Calgary real estate · Beltline condos · selling a Calgary house on a deadline.