Is building a multiplex in Calgary still a sound investment at the end of 2026 and into 2027? It can be, but as with any investment, the numbers and return on your capital (ROI) need to make sense.

With the zoning reversal the City of Calgary made in August of 2026, investors can no longer build as many units on lots previously zoned R-CG. However, lots still zoned R-CG can still have a fourplex with a secondary suite in each unit (a “4+4”), similar to our recent Parkdale project.

What Changed in Calgary’s Zoning in 2026?

Council repealed blanket R-CG rezoning, which allowed multi-plexes on previously zoned low-density R-C1 and R-C2 lots. What you can build now depends on each parcel’s current zoning.

The key points, from the City of Calgary’s rezoning page and its April 2026 Council decision summary, include [1]:

  • Timeline: Council started the repeal on December 15, 2025, approved it on April 8, 2026, and it took effect on August 4, 2026.
  • Exemptions: Parcels with an approved R-CG permit, an application filed before the first reading or an owner-initiated rezoning after August 6, 2024, kept R-CG zoning.
  • Suites: A parcel can again have a secondary suite or a backyard suite, but not both. Semi-detached properties can’t add a backyard suite, and backyard suites need one stall per residence, so two designated parking stalls on one lot.
  • Tighter R-CG limits: For applications after August 4, 2026, maximum height fell from 11 m to 10 m and parcel coverage from 60% to 55%.
  • July 21, 2026 bylaws: R-CG’s maximum density stays at 75 units per hectare (Bylaw 24P2026), the rule allowing a main building in the rear yard of mid-block lots is gone (25P2026), and secondary suites are a permitted use in all low-density districts (26P2026).

Rezoning a reverted lot to R-CG now takes a land use redesignation decided by Council, then a development permit (DP) and building permit (BP). The rezoning itself will cost you nearly $2,800 in city fees.

Could Calgary’s Zoning Rules Change Again?

Absolutely. It’s always a possibility. Calgary’s federal Housing Accelerator Fund (HAF) agreement is worth about $251 million [2]. Federal housing Minister Gregor Robertson’s April 21, 2026 letter tied the final payment of about $65 million to zoning that allows at least four units on a “significant majority” of lots, before the agreement ends October 27, 2026.

No citywide replacement has been adopted as of the date this article was written, so don’t make any multiplex investment plans in Calgary betting on looser rules.

What Can You Build on an R-CG Lot vs. R-C2 Lot?

An R-CG lot can take rowhouses or townhouses up to 75 units per hectare, plus a suite in each unit below grade. An R-C2 lot is limited to a single, semi-detached or duplex home, with one secondary suite per dwelling unit. What Land Use Bylaw 1P2007 means in practice [3]:

  • Density excludes suites. On a typical 50 by 120 ft lot (about 557 m²), 75 units per hectare works out to four units. The City’s R-CG guide describes “a maximum of four units on a typical 50’ lot, with the potential for each unit to have a secondary suite.”
  • Fit is the real limit. The 10 m height, 55% coverage, and loss-of-the-rear-yard rule make a 4+4 harder to fit mid-block. Some surveyors now say three units is the realistic maximum on many standard lots, so get a design test fit before you buy a lot.
  • Parking counts suites. R-CG requires 1 stall per unit or suite, or 0.5 within 600 m of an LRT or BRT station or in designated areas [3]. A 4+4 multiplex built outside of that distance and away from transit needs eight parking stalls.
  • Suites stay with their unit. A suite can’t be split off by condominium or subdivision [3], so you can’t sell suites separately.
  • Suite standards apply. The City requires 1.95 m ceilings, smoke-tight separations, sound insulation, egress windows and separate kitchens and bathrooms [4].

Duplex vs Triplex vs Fourplex vs 5+ Units: How Do They Compare?

Four thresholds drive the differences for investors: zoning, the four-unit minimum for the GST rental rebate, CMHC’s five-unit minimum for MLI Select and the five-unit point where Alberta typically requires a developer license (SCROLL ON MOBILE ->).

Category Duplex or semi + 2 suites Triplex (3+3 rowhouse) Fourplex (4+4 rowhouse) 5+ units (e.g., 6+6 townhouse)
Typical zoning R-C2 R-CG (most lots need rezoning) R-CG; lot size and fit decide Large or corner R-CG lot, or M-CG
Doors, including suites Up to 4 Up to 6 Up to 8 10 or more
100% GST rental rebate CRA: duplexes ineligible CRA: triplexes ineligible; ask if suites change this CRA example: rented fourplex qualifies Eligible if conditions are met
CMHC option Income Property (2–4 units, under CAD 1M) Income Property or conventional Usually conventional (value over CAD 1M) MLI Select
Alberta builder license General contractor General contractor General contractor Developer
Parking away from transit Check R-C2 rules 6 stalls 8 stalls 1 per unit and suite
Sources: City of Calgary, Land Use Bylaw 1P2007, CRA, CMHC and Government of Alberta.
Please note: Whether suites count toward CRA or CMHC unit thresholds is a question for your lawyer, accountant, and/or lender.

What Does it Cost to Build a Multiplex in Calgary?

Total construction costs for multiplex infill builds can range from $250/s.f. up to $285/s.f. or higher depending on the scope, finishes, and other factors such as city connections, sidewalk replacement and/or upgrade requirements, and more.

Investors, make sure to budget for these when building a multiplex in Calgary:

  • Design & Permitting: Can range from $10,000 to $20,000 per unit or more, depending on scope, design/architect used, and other factors
  • Basement Suites: Can add $50,000 to $100,000 or more in construction costs per unit, depending on scope
  • Servicing: $20,000 to $35,000 per unit, once again, depending on scope
  • Sidewalk Upgrades: The City of Calgary may also require that you pay significant fees for future sidewalk repairs and/or upgrades, especially if your infill is along a main street with bike lanes or walkability features

Pricing is where builders differ most. At Gold Homes, our in-house team and affiliated excavation company, Garage Suites/Tops Excavation, allow us to offer highly competitive pricing on fixed-price contracts.

Contact us anytime to discuss your multiplex investment goals!

How to Finance a Calgary Multiplex Investment?

Most new multiplexes with four or fewer units use conventional construction financing, because CMHC’s MLI Select program is only offered for builds with five units or more. The right route depends on unit count, value and whether you’ll live on site.

  • CMHC MLI Select (5+ units): For new construction, up to 95% loan-to-cost and up to 50-year amortization for top-scoring projects, based on affordability, energy and accessibility points [5]. Make sure to check the CMHC MLI Select page for more information.
  • CMHC Income Property (2–4 units, not owner-occupied): Up to 80% loan-to-value and 25-year amortization, but the value must be under $1,000,000, which rules out almost all new fourplexes in Calgary.
  • CMHC suite refinance (owner-occupied): Since January 15, 2025, homeowners can refinance up to 90% of the as-improved value (under $2 million, up to four units) to add suites.
  • Conventional construction loans: Draw-based and usually need more equity than insured loans.

CMHC doesn’t say whether secondary suites count toward MLI Select’s five-unit minimum, so ask a CMHC-approved lender before you design around it.

How Do the GST Rental Rebate and Income Tax Rules Apply?

A new rental building with at least four self-contained units can qualify for a 100% rebate of the 5% GST charged on Calgary multiplex builds. Duplexes, triplexes, condo units and substantial renovations don’t qualify, according to the Canada Revenue Agency (CRA) [5].

Conditions from the CRA and GST/HST Memorandum 19-3-9 include [6]:

  • Each unit has a private kitchen, bath and living area.
  • At least 90% of units are held for long-term rental. In the CRA’s example, an owner living in one of four units loses the rebate.
  • Excavation starts after September 13, 2023 and before 2031; completion comes before 2036.
  • Reusing an old foundation can make it a substantial renovation, which doesn’t qualify.

With respect to income tax:

  • Capital cost allowance (CCA): Buildings are usually Class 1 at 4%. The CRA lists a 10% rate for new purpose-built rentals as a “proposed” change. CCA can’t create or increase a rental loss (CRA guide T4036).
  • Flipping rule: Since January 1, 2023, profit on housing held for less than 365 days is generally business income.
  • Rents: Alberta allows one increase every 365 days, with no cap on the amount.

Ownership structure and suite layout change these outcomes, so have your accountant review your plan before construction.

What Warranty and Code Rules Apply in Calgary?

Alberta’s New Home Buyer Protection Act requires at least 1 year of coverage for labour and materials, 2 years for delivery and distribution systems, 5 years for the building envelope, and 10 years for major structural components.

  • Coverage limits: $130,000 per unit for multi-family homes [7].
  • Rental exception: Multi-family rentals the owner plans to keep for at least 10 years don’t need a warranty, through a rental use designation [8].
  • Licenses: A general contractor license typically covers up to four units; a developer license typically applies at five or more.
  • Codes: The National Building Code – 2023 Alberta Edition and the 2020 energy code have applied since May 1, 2024. Your designer/architect should confirm fire separations and any sprinkler requirements, which can also significantly increase the cost of building a multiplex investment in Calgary.

What Does the Calgary Rental Market Look Like for New Multiplexes?

Inner-city multiplexes are always in high demand, with two-bedroom basement suites renting for $1,800 or more, while the main units above-grade can go for as high as $2,800 a month pending features such as location, finishes, and walkability. However, it’s important to note the following:

  • Supply: Purpose-built rental supply grew 11% in 2025, the fastest in decades, and CMHC expects higher vacancy and slower rent growth.
  • Small buildings: Buildings with 3 to 24 units saw more vacancies (CMHC).
  • Demand: CREB® says favourable rental conditions are slowing the move to ownership.

Underwrite at today’s rents, budget for longer lease-ups and don’t count on appreciation. Good layouts, soundproofing and parking help a new multiplex compete with new apartments.

How Do You Choose a Multiplex Builder in Calgary?

Choose a builder licensed in Alberta, with several finished multiplexes like yours, and who quotes a fixed, itemized price.

  1. License and record: Search Alberta’s public builder registry for license type, expiry and enforcement actions.
  2. Multiplex portfolio: Ask for addresses of completed rowhouses with suites and speak with past clients.
  3. Price clarity: A fixed-price contract, itemized inclusions and allowances, and written exclusions.
  4. Permit experience: DPs under the post-repeal R-CG rules and, if needed, redesignations.
  5. Warranty plan: The warranty provider’s name, or a plan for a rental use designation.
  6. Investor-focused design: Soundproofing, storage, bylaw-compliant parking, and other features that support investor goals.

Why Work With a Builder Like Gold Homes?

Gold Homes is a family-owned Calgary infill and townhome builder, building since 2008. We design, excavate, build and warranty our projects, including recent and current investment multiplexes in inner-city communities.

  • Multiplex experience: 4+4 rowhouses in Parkdale, Mount Pleasant, Killarney and Thorncliffe, a 3+3 in Garrison Woods and a 6+6 townhouse in Hillhurst, for private clients and as rentals we own and manage (see our other projects).
  • In-house delivery: We work closely with third-party designers during the design and permitting phase, and have our own in-house construction management team, with excavation by our affiliate, Tops Excavation.
  • Clear pricing: Fixed-price contracts, no hidden fees and costs worked out during design, before you sign.
  • Five-step process: Initial discussion and quote, design and permits, construction consultation, construction, and completion with after-care and Alberta New Home Warranty coverage.
  • Licensing: Alberta’s registry lists Gold Homes Ltd. with active developer and general contractor licenses and no enforcement actions.

Multiplex Investments: Frequently Asked Questions

Q. Can I still build a fourplex in Calgary after the rezoning repeal?

Yes, on lots zoned R-CG (including exempt parcels) or after a successful land use redesignation. Confirm the design fits under the tighter height and coverage limits.

Q. Do secondary suites count toward R-CG density?

No. The Land Use Bylaw excludes suites from density, but they count for parking.

Q. Does a fourplex qualify for CMHC MLI Select?

Not on its own; MLI Select requires at least five units. Ask your lender whether suites count.

Q. Does a duplex qualify for the GST rental rebate?

No. The CRA lists duplexes and triplexes as ineligible.

Q. Is there a City grant for secondary suites?

The Secondary Suite Incentive Program offered up to $10,000 per home, but all applications were waitlisted as of June 24, 2026.

Planning an Investment Multiplex in Calgary?

If you’re planning a multiplex in Calgary, connect with Gold Homes to discuss your options. We offer highly competitive pricing and know how to build multiplexes from start to finish, from design and permits to excavation, construction and warranty.

Contact us for a no-obligation quote today: call us at 403-269-1696, email info@goldhomes.ca or use our contact page. We look forward to discussing your investment goals!

Note: This blog above provides general information only for potential multiplex investors, and is not legal, tax or financial advice.

SOURCES:

1 – https://www.calgary.ca/planning/projects/rezoning.html

2 – https://www.cbc.ca/news/canada/calgary/calgary-housing-funding-third-instalment-9.7173586

3 – https://www.calgary.ca/planning/land-use/online-land-use-bylaw.html

4 – https://www.calgary.ca/development/home-building/new-secondary-suite.html

5 – https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/gst-hst-rebates/purpose-built-rental-housing.html

6 – https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/19-3-9/purpose-built-rental-housing-rebate.html

7 – https://www.alberta.ca/new-home-warranty-overview

8 – https://www.alberta.ca/rental-use-designation