The Ampersand North Tower: Calgary's Renewed Sun Life Plaza

The Ampersand North Tower: Calgary's Renewed Sun Life Plaza

If you've heard someone in Calgary's office market mention "Sun Life Plaza," they're talking about the same three-tower complex now branded The Ampersand. This isn't a new building trading on an old name: it's a genuine 1980s Calgary tower that changed hands in 2018 and went through a real renovation, and the North Tower at 140 4th Avenue SW is the piece of it tracked in this directory.

Here's what actually changed, what didn't, and what a prospective tenant should know before touring it.

Building Overview

| Attribute | Detail | |-----------|--------| | Address | 140 4th Avenue SW, Calgary, AB | | Complex | The Ampersand (formerly Sun Life Plaza), three connected towers | | This tower | North Tower | | Classification | Class A | | Floors | 28 storeys | | Height | 114.3 m (375 ft) | | Year built | 1982 (North Tower; West Tower 1981, East Tower 1984) | | Complex size | Approximately 1.0–1.1 million sq ft across all three towers | | Owner | Aspen Properties (since December 2018) |

The three towers, near-identical 28-storey structures, are connected at grade and via Calgary's +15 skywalk level, giving the complex a campus feel that's unusual for a downtown site this central. Aspen Properties bought the complex from Choice Properties REIT and Sun Life for $225 million in December 2018, then invested roughly $25 million renovating it and rebranding it The Ampersand.

What Changed in the Renovation

The post-2018 work added a roughly 20,000-square-foot glass atrium connecting the three towers at grade, built around a library-style lounge, a social stair, a café, and a food market. Aspen also added a dedicated tenant lounge, a conference centre, and a fitness centre, all tied into the existing +15 connection to the TransCanada building and the James Short Parkade.

The result is a building that looks and functions differently from a typical unrenovated 1980s Calgary tower: the bones (floor plates, structural grid, 28-storey massing) are original, but the shared amenity space is new.

Location & Access

140 4th Avenue SW sits in the western half of Calgary's downtown core, connected to the +15 network through the TransCanada building link, with parkade access via James Short Parkade. This puts it within the same walkable core as Bankers Hall, Bow Valley Square, and Eighth Avenue Place, all a few blocks east.

Amenities

• Atrium connecting all three towers, with a library-style lounge and social stair
• On-site café and food market
• Dedicated tenant lounge
• Conference centre
• Fitness centre
• +15 network access via the TransCanada building
• Underground parkade access (James Short Parkade)

What It Costs

There's no independently sourced current asking-rate data for The Ampersand's North Tower specifically. Confirm current rates directly with a broker before using any figure in a proposal, rather than assuming it tracks the general downtown Class A range.

Who The Ampersand Is Best For

The tenant roster tracked for 140 4th Avenue SW skews toward energy and professional-services firms of real scale (multinational names like Morgan Stanley, Sun Life, and Fluor Corporation are among the building's tenants), which fits a building built for large single-floor or multi-floor users rather than small suites. The renovated shared amenity space, especially the conference centre and fitness centre, also suits a tenant that wants in-building meeting and wellness space rather than sourcing it elsewhere.

It's a less obvious fit for a business that wants a single, architecturally distinctive address; the value here is the campus-style complex and the renovated shared space, not a standalone landmark silhouette.

Tenant Mix

140 4th Avenue SW's tracked tenant roster leans heavily toward energy, professional services, and finance, consistent with what you'd expect from a Class A downtown tower of this scale: names on the roster include Morgan Stanley, Sun Life, Fluor Corporation, Bentley Systems, MCAP, Uniper, PetroKazakhstan, and KOGAS Canada, alongside a mix of Calgary-based law firms, engineering consultancies, and wealth-management practices. That mix reflects a building sized for established, multi-floor tenants rather than a startup or small-professional-practice building.

This tenant list reflects data tracked in this directory as of September 2026, not an independently sourced current rent roll from ownership; confirm current occupancy directly before treating any specific name as a current neighbor.

How to Approach a Lease Here

Understand which tower you're touring. The Ampersand is three separate towers under one renovated complex. Confirm whether a listing is in the North, West, or East Tower, since floor plates and views differ by tower even though the shared amenity space is common to all three.

Ask what's original versus renovated. The atrium, lounge, café, conference centre, and fitness centre are all post-2018. Individual floor condition varies depending on when that specific suite was last built out, so don't assume the renovation touched every floor equally.

Compare against the immediate competitive set. Bankers Hall, Bow Valley Square, and Eighth Avenue Place are all a short walk away and compete for the same tenant profile. A tenant-side broker can show you comparable space across all four before you commit.

How It Compares to Nearby Buildings

vs. Bankers Hall (855 2nd Street SW): Bankers Hall is two towers on a more central Stephen Avenue address; The Ampersand is three towers further west with a genuinely renovated (not just refreshed) shared amenity space. Both are managed as premium Class A product, but The Ampersand's 2018-era renovation is newer than most work done at Bankers Hall.

vs. Bow Valley Square (205 5th Avenue SW): Bow Valley Square is a four-tower campus a few blocks east; The Ampersand's three-tower layout is a smaller version of the same idea, with a more recently renovated central connector space.

vs. Eighth Avenue Place (525 8th Avenue SW): Eighth Avenue Place is 2000s-era new construction; The Ampersand is 1980s construction with a 2018-2020s-era amenity renovation layered on top. If new-build systems matter more to you than renovated shared space, Eighth Avenue Place is the closer fit.

Frequently Asked Questions

Is The Ampersand the same building as Sun Life Plaza? Yes. The complex at 140 4th Avenue SW and its two connected towers were known as Sun Life Plaza until Aspen Properties bought it in December 2018 and rebranded it The Ampersand after a renovation.

How many towers make up The Ampersand, and which one is 140 4th Avenue SW? Three: West Tower (1981), North Tower (1982), and East Tower (1984). 140 4th Avenue SW is the North Tower.

What did the 2018-era renovation actually add? A roughly 20,000-square-foot connecting atrium with a library-style lounge and social stair, a café, a food market, a tenant lounge, a conference centre, and a fitness centre.

Who owns The Ampersand? Aspen Properties, which purchased the complex from Choice Properties REIT and Sun Life for $225 million in December 2018.

What's the asking lease rate at The Ampersand? Not independently confirmed as of this writing. Confirm current rates directly with a broker rather than assuming a figure.

Considering The Ampersand?

The Ampersand is worth a serious look if a renovated shared-amenity complex matters more to your team than a standalone architectural statement, and if you need the kind of large floor plate that suits multinational energy and professional-services tenants. See how it stacks up against the downtown Calgary office market broadly, compare it directly to Bankers Hall, or check the live directory listing for current details.

Contact us for a no-obligation consultation on your downtown Calgary office search, including current availability and rates at The Ampersand.

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Building history and renovation details in this profile are sourced from Aspen Properties' own building marketing, CBRE and LoopNet listings, RENX coverage of the 2018 sale and renovation, and SkyscraperCenter's building records, current as of September 2026. Lease rates and current availability are not included where no independently verified source was found; confirm directly with a broker before making decisions.