Guides

Everything you need to know before you build.

Straight-answer, no-fluff guides written by the Modular X team on garden and laneway suite costs, permit processes, and build methods across Mississauga, Toronto and the GTA.

City pages: laneway suites in Toronto · garden suites in Toronto · garden suites in Mississauga · garden suite plans · ADUs in Ontario · prefab homes in Ontario

Cost Guide · Mississauga

How Much Does a Garden Suite Cost in Mississauga? (2026 Guide)

Sourced cost data for Mississauga garden suites, the City's refunded permit fees and free pre-approved plans, plus the site-specific cost drivers most owners underestimate.

9 min readRead guide →

Cost Guide · Toronto

How Much Does a Garden Suite or Laneway Suite Cost in Toronto? (2026 Guide)

Sourced Toronto cost data from the City's garden suite monitoring work, development-charge relief, permit fees and pre-approved plans, plus the fire-access rule that catches most owners off guard.

10 min readRead guide →

Permits · Mississauga

Mississauga Garden Suite Permits: City Plans vs Turnkey Modular

Who qualifies, the setback and fire-route rules, the 7-step application flow, and the resubmission traps that add weeks to your schedule.

8 min readRead guide →

Build Methods

Modular vs Site-Built Garden Suites: Which Is Right for Your Backyard?

An honest side-by-side from a builder that does both — with CSA A277 factory certification explained in plain English.

7 min readRead guide →

Permits · Toronto

Laneway Suite Permit Toronto — and garden suites (2026)

The Toronto permit file for a detached backyard suite — garden or laneway: eligibility, setbacks, the fire-access math, the document package, fees and DC deferral.

9 min readRead guide →

Rules · GTA

Garden & Laneway Suite Rules Across the GTA: A 2026 Municipal Comparison

Detached ARU rules side by side across six GTA municipalities — setbacks, separation, height, floor area, parking, registration and development charges, with a municipal source for every figure.

10 min readRead guide →

Cost Guide · Ontario

How Much Does a Garden Suite Cost in Ontario? What the Public Data Says (2026)

What garden suites cost in Ontario according to public sources: Toronto permit data, industry figures from a City-commissioned report, municipal fees, and the financing that exists in 2026.

8 min readRead guide →

Guide · Ontario

Prefab and Modular Garden Suites in Ontario: What the Rules Require

Factory-built garden suites still need zoning, a building permit and Building Code compliance. What CSA A277 certification covers, and what Toronto checks.

6 min readRead guide →

Guide · Ontario

Additional Residential Units in Ontario: What the Law Allows

What an additional residential unit (ARU) is in Ontario, the three-unit rule, parking, lot coverage and separation, and what your city's zoning still decides.

6 min readRead guide →

Guide · Ontario

Granny Pods and Granny Flats in Ontario: Rules, Size and Permits

What a granny pod or granny flat is under Ontario law, backyard and size rules, pods on wheels, what Toronto requires and what drives the cost.

8 min readRead guide →

Guide · Toronto

What Is a Laneway House? Toronto Rules, Fire Access and Permits

What a laneway house (laneway home or laneway suite) is, the four checks to make first, fire access and servicing rules, and Toronto's permits and programs.

8 min readRead guide →

Guide · Ontario

What Is a Modular Home? Design, Permits and Inspections in Ontario

What a modular home is, how one is designed and built, the Ontario permit and two-site inspection process, CSA A277 certification and Tarion warranty basics.

9 min readRead guide →

Guide · Ontario

Tiny Homes in Ontario: What the Rules Allow

What Ontario counts as a tiny home, the 17.5 m2 minimum size, permits and inspections, zoning variances, and how a backyard tiny home becomes an ARU.

6 min readRead guide →

Guide · Compare

Basement Suite vs Garden Suite in Ontario

Side-by-side comparison of in-house basement suites and detached garden suites under Ontario ARU rules, with permit and lot-fit checks.

7 min readRead guide →

Guide · Ontario

Prefab and Modular Cottages in Ontario: Rules vs Garden Suites

What prefab and modular cottages mean in Ontario, the permits that still apply, and how they differ from urban garden and laneway suites.

6 min readRead guide →

Guide · Compare

Garden Suite vs Laneway Suite in Toronto and the GTA

Clear comparison of Toronto garden suites and laneway suites, plus how other GTA cities frame rear-yard ARUs.

9 min readRead guide →

Guide · Financing

Canada Secondary Suite Loan Program (CSSLP): 2026 Status and Alternatives

The federal secondary suite loan was announced but never launched. Its official status, what CMHC Refinance offers instead, and the multigenerational tax credit.

6 min readRead guide →

Guide · Financing

Multigenerational Home Renovation Tax Credit (MHRTC): Who Qualifies in 2026

What the Multigenerational Home Renovation Tax Credit covers, who qualifies, what counts as a secondary unit, and how to claim line 45355.

8 min readRead guide →

Guide · Modular

How to Choose a Modular Home Builder in Ontario (2026 Checklist)

A checklist for comparing modular home builders in Ontario: licensing, Tarion warranty, CSA A277 factories and the questions to ask.

7 min readRead guide →

Guide · Modular

Modular Construction in Canada: How Modular Housing Works in 2026

How modular construction works, its benefits and trade-offs, codes and inspections, and the federal push for factory-built housing.

7 min readRead guide →

Guide · Cost

Laneway House Cost in Toronto: Fees, Deferrals and What Drives the Budget

Toronto laneway house cost is lot-specific. City DC deferral and parkland rules, soft costs, modular vs site-built factors, and how to get a real estimate.

7 min readRead guide →

Guide · Basics

What Is an ADU? Accessory Dwelling Units in Ontario Explained

ADU meaning in plain English: types (basement, garden, laneway), what Ontario's Planning Act allows, permits, and how to start.

5 min readRead guide →

Guide · Cost

Prefab Homes in Ontario: What Drives the Cost

Prefab home cost in Ontario depends on the lot as much as the factory. Cost drivers, quote checklist, and permit basics.

5 min readRead guide →

Guide · Toronto

City of Toronto Laneway Housing: The Program Explained

Toronto's laneway suite program in plain English: eligibility, history, permits, DC deferral and next steps.

5 min readRead guide →

Guide · Basics

What Is a Coach House? Coach Houses in Ontario Explained

Coach house meaning in plain English: how it compares to carriage houses, garden and laneway suites, what Ontario allows, and Ottawa and Markham rules.

6 min readRead guide →

Guide · Funding

HST New Housing Rebate for Modular Homes and Garden Suites

What the CRA says about the GST/HST new housing rebate for modular homes and detached garden suites, plus the Ontario provincial rebates and forms.

8 min readRead guide →

Guide · Basics

Manufactured vs Modular vs Mobile Homes in Ontario

How manufactured, modular and mobile homes differ in Ontario: CSA A277 vs Z240 certification, one storey or more, foundations and permits.

7 min readRead guide →

Guide · Basics

Shipping Container Homes in Ontario: Rules, Permits and Alternatives

Container homes in Ontario: when they're legal, permits and the Building Code, backyard zoning, and how they compare with a modular garden suite.

7 min readRead guide →

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