Garden Suite / ADU Projects

Plan, Permit & Build Your Garden SuiteWith the Right Team From the Start.

Start with your property and idea. Find professionals for feasibility, design, permit drawings, engineering and construction and keep the complete garden suite project organized in one place.

✓Free to post✓Compare professional options✓Manage the project in one place
Garden SuiteDetached ADULaneway HomeBackyard SuiteCoach House
Quick Answer

What Is a Garden Suite or ADU?

A garden suite or accessory dwelling unit (ADU) is a separate residential unit built on the same property as a primary home. A typical project can involve property feasibility, design, permit drawings, municipal approvals, engineering and construction. The exact requirements depend on the property, municipality and proposed design.

Start With the PropertyYou do not need drawings or every professional figured out first.
Know What Can Be BuiltReview the site, zoning and servicing before the design goes too far.
Move From Design to BuildKeep professionals, drawings, milestones and approvals connected.
Start With Your Goal

Start With Your Goal

A garden suite can solve very different needs. Start with the outcome you want, then build the right professional team around the property and project.

01

Family Housing

Create a separate home for parents, adult children or extended family while keeping households close.

02

Rental Unit

Add a self-contained dwelling that may support long-term rental income where local rules allow.

03

Aging in Place

Plan a smaller, independent home around accessibility, privacy and future living needs.

04

Laneway / Rear-Yard Home

Use available rear-yard or laneway space for a detached residential unit where the property allows it.

05

New ADU With a Larger Project

Coordinate the garden suite with a home renovation, addition or wider property improvement.

06

Replace an Existing Structure

Explore whether an old garage or accessory structure can make way for a compliant new dwelling.

Backyard property photo
Residential backyard with a detached small-home structure. Upload an image and set it here.
Example feasibility reviewSetbacks + lot coverageAccess / servicing pathWater + sewer + utilitiesPotential suite location
Feasibility before detailed design

Can I Build a Garden Suite on My Property?

Before investing heavily in drawings, review the property conditions that can shape the size, location and permit path for a detached dwelling.

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Zoning and permitted unitsConfirm how the property can be used under the applicable local rules.
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Setbacks, height and lot coverageThese can affect where the suite sits and how large it can be.
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Access and emergency considerationsReview how people, construction and emergency access reach the new dwelling.
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Water, sewer and utilitiesServicing can influence both feasibility and project cost.
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Trees, grading and existing structuresSite conditions can change the design or require additional review.
Complete project support

What Does a Garden Suite Project Usually Involve?

Find the professionals needed for each stage instead of restarting your search every time the project moves forward.

A

Property Feasibility

Review the site, local rules and project constraints before detailed design.

B

Survey & Site Information

Get property information needed to support planning and design where required.

C

Design & Floor Plans

Plan the layout, exterior, access and relationship to the main home.

D

Permit Drawings

Prepare the architectural or building-design package for the proposed suite.

E

Engineering

Coordinate structural, mechanical or other technical design where the project requires it.

F

Permit Support

Get help with submission requirements, comments and revisions within the agreed scope.

G

Construction

Compare professionals for site preparation, building work, systems and finishes.

H

Inspections & Close-Out

Keep inspection items, final documents and remaining work connected to the project.

1Check FeasibilityProperty + local rules
2DesignLayout + site plan
3Prepare DrawingsPermit documents
4SubmitPermit review + revisions
5BuildConstruction + systems
6InspectCompletion + close-out

You can start at the stage your project is already at—or post the complete Garden Suite / ADU project.

Permit drawings

What Drawings Are Needed for a Garden Suite Permit?

The required drawing package depends on the property, municipality and project scope. A qualified professional can determine which architectural, site and technical drawings are needed before submission.

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Site planShows the main home, proposed suite, lot lines, access and key distances.
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Floor plansShows room layouts, dimensions, doors, windows and circulation.
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Elevations and building sectionsShows exterior design, height, roof form and vertical construction details.
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Structural informationMay be required for foundations, framing or other engineered components.
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Mechanical or servicing informationMay be required for HVAC, utilities, drainage or other building systems.

You can start before drawings exist.

If you do not have drawings yet, start with the property and project goal. Permit.ca can help you connect with a qualified professional for feasibility, design and the drawing package required for the next step.

If you already have a survey, site plan, sketches or existing drawings, upload them with the project so professionals can review the available information before quoting.

Your project team

What Professionals Do I Need for a Garden Suite?

The exact team depends on the province, municipality, design and property. Start with the project rather than guessing every role in advance.

Design

Architect / Designer / BCIN

Design the suite and prepare drawings within the professional’s applicable scope.

Site

Surveyor

Provide property and site information where survey work is required.

Structure

Structural Engineer

Design or review structural elements where engineering is required.

Systems

Mechanical / HVAC Professional

Plan heating, ventilation and related building systems where applicable.

Permits

Permit / Code Professional

Support application coordination, requirements and revisions within scope.

Build

Contractors & Trades

Complete site work, construction, utilities, interior finishes and trade scopes.

Compare clearly

How Should I Compare Garden Suite Quotes?

One quote may cover drawings only. Another may include survey coordination, engineering or permit support. Compare what each professional is actually responsible for before you hire.

A lower quote can simply mean more of the project is excluded.
Example scope
Quote A
Quote B
Quote C
Site / zoning review
Included
Included
Separate
Design + permit drawings
Included
Included
Included
Survey coordination
Separate
Included
Separate
Structural engineering
Separate
Included
Included
Permit response support
Included
Included
Add-on
One organized project

Keep the Garden Suite Project Out of Scattered Emails and Texts.

Keep professional quotes, survey files, drawings, revisions, milestones, payments and approvals connected to the same project from early feasibility through construction.

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Professional profiles and quotes
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Site plans, surveys and drawings
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Messages and project decisions
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Milestones and submitted work
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Payments and approvals
Clearer milestone payments

Fund the Work in Stages—Then Review Before You Approve.

Agree on the scope and milestones, fund the current stage through Permit.ca’s payment workflow, and review submitted work before approval.

1Agree on ScopeConfirm deliverables and milestones.
2Fund MilestoneClient funds the agreed stage.
3Complete WorkProfessional submits the milestone.
4Review & ApproveClient reviews before approval.
5Payout PeriodApproval starts the applicable payout process.

Either party can raise a dispute through the applicable workflow. Additional scope should be documented and agreed before extra work proceeds.

Create a clearer project post

Start With What You Know About the Property.

You do not need a complete drawing package before you post. Share the property details and project goals you have now.

Property LocationAddress, municipality and neighbourhood
Existing PropertyMain home, garage, lot and rear-yard conditions
Your GoalFamily use, rental, aging in place or other purpose
Files & PhotosSurvey, site plan, photos or existing drawings if available
Timing & BudgetTargets, priorities and current project stage
Garden Suite / ADU FAQs

Garden Suite / ADU FAQs

What is a garden suite or ADU?

A garden suite or accessory dwelling unit (ADU) is a separate residential unit on the same property as a primary home. Depending on the province or municipality, similar detached units may also be called backyard suites, laneway homes, coach houses or detached accessory dwelling units.

Can Permit.ca help with the complete Garden Suite / ADU project?

Yes. You can use Permit.ca to find independent professionals for property feasibility, design, survey work, permit drawings, structural or mechanical engineering, permit support and construction. Post the complete project or start with the stage you need now.

Can every property have a garden suite?

No. Whether a detached unit can be built depends on the property and local rules. Zoning, lot dimensions, setbacks, building height, lot coverage, access, utility servicing, trees, grading and existing structures can all affect what is possible. Start with a property feasibility review before committing to a design.

Do I need drawings before I post my project?

No. Start with the property, the type of unit you want and any files or photos you already have. A qualified designer, architect or other professional can help determine what drawings and supporting work are required for the next stage.

Do garden suites need a building permit?

A new detached residential dwelling generally requires building and related approvals, but the exact permit path depends on the municipality, property and proposed work. Confirm the required approvals before construction begins.

What drawings are needed for a garden suite permit?

The exact package depends on the municipality and project, but it can include a site plan, floor plans, elevations, building sections and technical information for structure, HVAC, utilities or servicing where required. A qualified professional should confirm the submission requirements for the property.

Can I start a Garden Suite / ADU project before I have drawings?

Yes. Start with the property address, your project goal, photos and any survey or existing documents you already have. You can then connect with the appropriate professional for feasibility, design and the permit drawing package.

What should be checked before design starts?

Review the property’s zoning, permitted number of units, lot dimensions, setbacks, height and lot coverage rules, access, water and sewer servicing, utilities, grading, trees and existing structures. Some properties may also need a survey or additional technical review.

Which professionals might I need?

The team can include a residential designer, architect or BCIN designer where applicable, a surveyor, structural engineer, mechanical or HVAC professional, permit or code consultant, contractor and specialty trades. The project and jurisdiction determine which roles are required.

Can I build a garden suite for family or rental income?

Garden suites and ADUs are commonly considered for family housing, aging in place or rental use. Occupancy, rental and tenancy requirements vary by jurisdiction, so confirm the rules that apply to your intended use.

Can I replace an existing garage with a garden suite?

Possibly. An existing garage or accessory building does not automatically mean a new dwelling can occupy the same footprint. The proposed garden suite still needs to satisfy the applicable planning, building, servicing and permit requirements.

How should I compare Garden Suite / ADU quotes?

Compare the included site review, survey coordination, design, permit drawings, engineering, revisions, permit support, construction scope, exclusions, timeline and milestones. Two quotes with similar totals can cover very different work.

How much does a garden suite cost?

There is no reliable one-price answer. Size, design, site access, servicing, foundations, utilities, engineering, finishes, municipal requirements and existing property conditions all affect cost. A defined project scope supports more useful professional and construction quotes.

How long does a Garden Suite / ADU project take?

The timeline can include feasibility, survey work, design, permit drawings, municipal review, revisions, procurement, construction, inspections and close-out. Timing varies by property, municipality, project complexity and professional availability.

What happens if the municipality asks for revisions?

The professional responsible for the applicable scope can review the comments and update the required documents where revisions are included in the agreement. Keep municipal comments, updated drawings and decisions connected to the project record.

Does Permit.ca guarantee that my Garden Suite / ADU will be approved?

No. Permit.ca helps you find independent professionals and organize the project. Municipal and regulatory authorities determine approvals based on the property, submitted documents and applicable requirements.

Turn the Backyard Into a Real Project From Feasibility to Final Build.

Post your Garden Suite / ADU project once. Find professionals for design, drawings, engineering, permits and construction. Keep every stage connected.

Free to post. Hire when the scope and professional are right for your project.