ARVO Backyard Homes designs, permits, and builds garden suites across Mississauga. GTA's most generous GFA — 100 m². Building permit fees waived. Free pre-approved plans available. Two-storey permitted. Fixed-price contracts. No hidden costs.
Mississauga offers the most generous garden suite regulations in the GTA — 100 m² (1,076 sq ft) maximum GFA, 6.5 m height for two-storey builds, and the smallest setbacks. The City also waives building permit fees and provides free pre-approved design plans. Garden suites are permitted as-of-right in detached and semi-detached zones — no rezoning needed.
Maximum GFA 100 m² (1,076 sq ft) — the highest cap in the GTA. Combined lot coverage including all structures cannot exceed 40%. Basements permitted and do not count toward GFA. Two-storey construction effectively doubles total usable space.
Maximum height 6.5 m, accommodating two-storey construction. Must comply with angular plane rules from property lines. Exterior design should complement the principal dwelling — complementary materials, roof forms, and window proportions.
Permitted in detached and semi-detached residential zones. Minimum lot width: 15 m. Up to 2 ARUs per lot plus the main dwelling under Ontario Bill 23. Mississauga updated its Zoning By-law in late 2023 to make garden suites and fourplexes easier to build.
Rear: 0.6 m. Side: 0.6 m from interior side lot lines — the smallest setbacks in the GTA. Minimum separation from main house: 4 m (Ontario minimum). These generous setbacks maximize buildable area on most lots.
Building permit fees waived for garden suites. Free pre-approved design plans available (studio 430 sqft / 1-bed 600 sqft). No Development Charges. The City's $44M Affordable Rental Housing CIP provides additional incentives for qualifying affordable rental projects (through 2027).
No additional parking required for the garden suite — the principal dwelling must maintain 1 parking space. A clear emergency access path from street to suite entrance is required. Separate utility meters and individual service laterals are needed.
ARVO 雅筑 提供全程中英双语服务，从可行性评估到 permit 申请再到施工交付。 密西沙加是 GTA 对 Garden Suite 政策最宽松的城市：最大面积 100 m²（1,076 sqft）， 最高 6.5 米可建两层，后院/侧院退距仅 0.6 m。 市政府免除 Garden Suite 建筑许可费，并提供免费预批设计图纸。 Garden Suite 免 Development Charges，省下数万元。 地块须满足最低 15 米宽度要求。 我们的报价包含 permit 代办服务，没有隐藏收费。 欢迎微信或邮件咨询。
Every package is turnkey: architectural design, building permit, engineering, site prep, construction, utility hookup, and final inspection — all included. Mississauga waives building permit fees for garden suites.
From $169,900
From $257,900
From $289,900
Our fixed-price contracts include everything from design to occupancy. Here's a typical cost breakdown for a standard single-storey garden suite in Mississauga.
| Item | Description | Included? |
|---|---|---|
| Architectural Design | Custom or pre-approved plans, stamped drawings | ✅ Included |
| Engineering | Structural, mechanical, electrical design | ✅ Included |
| Building Permit | City of Mississauga application | ✅ Fees waived by City |
| Permit Service | Full permit application handling by ARVO | ✅ Included |
| Site Preparation | Excavation, grading, foundation | ✅ Included |
| Construction | Framing, roofing, insulation, exterior finishes | ✅ Included |
| Mechanical & Electrical | HVAC, plumbing, electrical, fixtures | ✅ Included |
| Interior Finishing | Flooring, kitchen, bathroom, painting | ✅ Included |
| Utility Connections | Water, sewer, electrical to city services | ✅ Included |
| Inspections | All required building inspections to occupancy | ✅ Included |
| Total | Turnkey, ready to move in | From $169,900 |
* Prices exclude HST. City of Mississauga waives building permit fees for garden suites. Site-specific conditions (extensive grading, long utility runs, tree protection) may affect final pricing. Arborist report quoted separately if required. Final price confirmed after free feasibility assessment.
Our streamlined process handles every step so you don't have to navigate City Hall, hire separate consultants, or coordinate trades.
We review your property address, zoning, lot dimensions, and rear yard conditions. You'll know within 48 hours if your property qualifies and get a preliminary budget range.
Choose a suite configuration. We prepare architectural plans, engineering scope, and a fixed-price proposal. No surprises — what you sign is what you pay.
We handle the full building permit application with the City of Mississauga, including architectural/structural/MEP drawings, surveys, grading plan, and tree protection reports. Building permit fees are waived by the City for garden suites. You can use the City's free pre-approved plans or our custom designs. Typical permit review: 8–12 weeks (Mississauga tends to be faster than most GTA municipalities).
Our in-house team builds your suite. Weekly progress updates. All trades coordinated under one general contractor. Build time: 4–8 months depending on configuration. Total project timeline from design to move-in: approximately 8–14 months.
Final building inspection, occupancy clearance, and walkthrough with you. Your suite is ready for family, tenants, or whatever you have planned.
Answers to the most common questions Mississauga homeowners ask about building a garden suite.
Most likely yes. Garden suites are permitted as-of-right in Mississauga's detached and semi-detached residential zones under Zoning By-law 0225-2007. Key requirement: lot width of at least 15 m. No rezoning needed — just a building permit. Mississauga updated its Official Plan and zoning rules in late 2023 to make garden suites and fourplexes easier to build. Our free feasibility check covers all of this.
A turnkey single-storey garden suite starts from $169,900. The City of Mississauga waives building permit fees for garden suites — saving you thousands. Garden Suite + Basement configurations start from $257,900. Two-Storey Garden Suites start from $289,900. Final cost depends on suite size, site conditions, and finishing selections. Our fixed-price contracts mean no surprises after signing.
Mississauga is the most incentive-friendly city in the GTA for garden suites: building permit fees are waived, Development Charges are exempt, and the City provides free pre-approved design plans for studio (430 sqft) and one-bedroom (600 sqft) models. The City's $44M Affordable Rental Housing CIP provides additional incentives for qualifying affordable rental projects (applications through 2027 or until funds exhausted).
Yes. Mississauga's 6.5 m height limit permits two-storey construction. Combined with the 100 m² GFA cap (the highest in the GTA) and basement space that doesn't count toward GFA, you can build a substantial family home in your backyard. Our Two-Storey Garden Suite package ranges from 1,000–2,000 sq ft and starts from $289,900.
Yes. Basements are permitted and do not count toward the 100 m² GFA cap. This means a single-storey 100 m² suite with an unfinished basement gives you over 2,000 sq ft of total space. Our Garden Suite + Basement package starts from $257,900.
Yes. Garden suites are self-contained dwelling units with their own kitchen, bathroom, and separate entrance. They can be rented as long-term rentals. In Mississauga's rental market, a well-designed garden suite can generate $2,000–$2,500+ per month depending on size, location, and finishes. Combined with waived fees and no Development Charges, the return on investment is compelling.
Mississauga tends to process permits faster than most GTA municipalities. Building permit review: typically 8–12 weeks. Using the City's free pre-approved plans can speed this up further. If a minor variance is needed (uncommon with our designs), add 3–4 months for Committee of Adjustment. Total project timeline from design to move-in: approximately 8–14 months. ARVO handles the entire permit process.
If a family member occupies the garden suite as their primary residence (common in multi-generational households), you may qualify for the Ontario New Housing Rebate — up to approximately $16,080 in HST savings. This is a significant benefit for families building suites for parents or adult children. We can walk you through eligibility.
Mississauga offers free, downloadable design plans for two garden suite models: a studio (430 sq ft, open-concept) and a one-bedroom (600 sq ft). Using these plans saves time and design costs — you skip the design phase and work directly with a builder. You can customize exterior and interior finishes (siding, windows, flooring) without changing the pre-approved plans. ARVO can build from these plans or create a fully custom design for larger suites. View plans on mississauga.ca →
Send us your address. We'll check zoning, lot feasibility, and give you a preliminary budget — all free, no obligation.
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