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Design & Planning

Must my Ottawa builder be HCRA registered for an addition?

HCRA registration is not required for contractors doing additions to existing homes in Ottawa — but understanding exactl...

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Foundations & Footings

Should I test for radon under a new Ottawa addition?

Radon testing is absolutely something you should do before, during, and after adding to your Ottawa home — and the local...

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Materials & Finishes

Which roofing ties in cleanly on an Ottawa addition?

Tying a New Roof Into an Existing Home in Ottawa The cleanest roof tie-in for an Ottawa addition depends on your exist...

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Bump-Out Extensions

Is a bump-out worth it on a narrow Hintonburg lot?

Hintonburg is one of Ottawa's most interesting neighbourhoods for home additions precisely because the housing stock — m...

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Structural & Engineering

Do I need an engineer's stamp for an Ottawa addition?

Structural engineering is one of the most important — and most misunderstood — requirements in Ottawa home addition proj...

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Design & Planning

What survey work comes before designing an Ottawa addition?

Before your architect or designer puts a single line on paper, a small but critical set of survey and assessment work ne...

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Sunroom Additions

Does an Ottawa sunroom need footings down to frost depth?

Yes, an Ottawa sunroom absolutely needs footings that extend below the frost line — and in Ottawa, that means excavating...

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HVAC & Mechanical

Does an Ottawa addition need its own heating zone?

A dedicated heating zone for your addition is not always legally required, but in Ottawa's climate it is almost always t...

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Structural & Engineering

Removing a load-bearing wall for an Ottawa addition, what is involved?

Removing a load-bearing wall as part of a home addition project is one of the most structurally significant decisions yo...

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Room Additions

Is a basement under a new Ottawa addition possible?

Adding a basement under a new home addition in Ottawa is not only possible — it is often the smartest structural and fin...

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Bump-Out Extensions

Can a bump-out extend past the setback in Ottawa?

No, a bump-out cannot extend past the required setback in Ottawa — at least not without going through a formal variance...

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Foundations & Footings

How deep do footings go for an Ottawa addition?

Footings for a home addition in Ottawa must reach a minimum depth of 1.2 to 1.5 metres below finished grade — and in pra...

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Design & Planning

Who is liable if my Ottawa addition damages a neighbour's property?

Liability for home addition damage to a neighbour's property is a legal question that falls outside my area of expertise...

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Structural & Engineering

Is my party wall a problem when adding to an Ottawa semi?

Party walls are one of the most important — and most frequently overlooked — considerations when adding onto a semi-deta...

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Foundations & Footings

How does Ottawa's Leda clay soil affect the foundation design for my addition?

Much of the Ottawa area sits on sensitive marine clay, commonly called Leda clay (or Champlain Sea clay), and if your lo...

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Foundations & Footings

What type of foundation waterproofing do I need for an addition in Ottawa?

Foundation moisture protection for an addition is not a place to cut corners. Ottawa's freeze-thaw seasons, spring snowm...

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Foundations & Footings

Should I use helical piles instead of a poured foundation for my Ottawa addition?

Helical piles can be a good foundation choice for some Ottawa additions, but they aren't a universal answer. The right c...

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Foundations & Footings

How do I protect a new addition foundation from frost heaving in Ottawa?

Frost heave is one of the forces an addition foundation has to be designed against in Ottawa, where winters regularly re...

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Foundations & Footings

Is my existing foundation strong enough to support a second storey in Ottawa?

Adding a second storey can add a lot of space without a bigger footprint, but the first question is whether the existing...

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Foundations & Footings

What is the best foundation type for a sunroom addition in Ottawa's freeze-thaw climate?

A sunroom is lighter than a full room addition, but its foundation still has to survive the same freeze-thaw seasons, wi...

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Foundations & Footings

Can I build an addition near the Ottawa River without flood zone foundation upgrades?

If your property is near the Ottawa River or another waterway, don't assume you can avoid flood-related requirements. Th...

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Foundations & Footings

Do I need weeping tile around a new addition foundation in Ottawa?

In most cases, yes. A new addition foundation, especially one with a basement or other below-grade space, needs a way to...

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Foundations & Footings

What is frost-protected shallow foundation and can I use it for my Ottawa addition?

A frost-protected shallow foundation (FPSF) is an engineered foundation that uses insulation to keep frost away from foo...

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Second-Storey Additions

How much does a second storey add to my home's resale value in Ottawa?

How much a second storey adds to resale value depends on your neighbourhood, the quality of the work and how buyers in y...

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Bump-Out Extensions

How far can I bump out my kitchen without needing a new foundation in Ottawa?

How far you can extend a kitchen before a bump-out needs its own foundation is a question with no single answer. The dis...

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Bump-Out Extensions

Can I do a cantilevered bump-out on my two-storey home in Ottawa?

Cantilevered bump-outs are possible on two-storey homes in Ottawa, but the structural design is more demanding than on a...

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Bump-Out Extensions

What is the maximum size for a bump-out addition in Ottawa?

There is no single maximum size for a bump-out addition in Ottawa. The limit comes from several things working together:...

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Bump-Out Extensions

Is a bump-out big enough to add a dining area to my kitchen in Ottawa?

A bump-out can create enough room for a dining area in your kitchen. Whether a small cantilevered extension is enough, o...

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Bump-Out Extensions

Can I add a bump-out to my bathroom for a walk-in shower in Ottawa?

Adding a bump-out to make room for a walk-in shower is one of the more practical small additions you can make. Many olde...

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Bump-Out Extensions

Do I need a building permit for a small bump-out in Ottawa?

In most cases, yes. The City of Ottawa lists one- and two-storey additions among the projects that need a building permi...

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Bump-Out Extensions

How does a bump-out handle Ottawa's extreme freeze-thaw cycles?

Ottawa winters regularly reach well below -20°C, summers are hot and humid, and temperatures cross the freezing mark man...

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In-Law Suites

What are the legal requirements for an in-law suite addition in Ottawa?

An in-law suite addition is a secondary dwelling unit, and that brings requirements beyond a standard home addition. The...

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In-Law Suites

Can I add an in-law suite with a separate entrance to my home in Orleans?

Adding an in-law suite with its own entrance to an Orleans home is possible, and many families consider it to keep an ag...

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In-Law Suites

Does my in-law suite need a separate kitchen under Ottawa's zoning bylaws?

In general, yes. What turns extra living space into a separate dwelling unit is that it is self-contained, and a self-co...

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In-Law Suites

What fire separation is required between an in-law suite and main house in Ontario?

When you add an in-law suite to your home, the Ontario Building Code treats it as a second dwelling unit, and the wall,...

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In-Law Suites

Can I rent out an in-law suite addition in Ottawa as a secondary dwelling?

Renting out an in-law suite can be possible in Ottawa, but only if the suite is a legal secondary unit and you meet your...

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In-Law Suites

What are the minimum room sizes for a legal in-law suite in Ottawa?

Room sizes are one of the first things to settle when you plan an in-law suite, because the Ontario Building Code sets m...

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In-Law Suites

Do I need separate heating for an in-law suite addition in Ottawa?

You do not always need a separate heating system for an in-law suite, but you do need heating that can keep the suite co...

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In-Law Suites

Can I build a detached in-law suite in my backyard in Ottawa?

Detached secondary units in the backyard, often called garden suites or coach houses, can be an option on many Ottawa re...

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In-Law Suites

What accessibility features should I include in an in-law suite in Ottawa?

Planning accessibility into an in-law suite from the start costs far less than retrofitting later, and if the suite is f...

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In-Law Suites

Does adding an in-law suite change my property taxes in Ottawa?

Adding an in-law suite will usually affect your property taxes, because it adds living space and value to your home. How...

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Sunroom Additions

What is the difference between a three-season and four-season sunroom in Ottawa?

The difference between a three-season and a four-season sunroom comes down to whether the room is built as conditioned l...

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Sunroom Additions

Can a sunroom addition handle Ottawa's minus thirty degree winters?

A four-season sunroom can handle Ottawa winters, including the stretches when temperatures drop well below -20°C, but on...

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Sunroom Additions

What type of glass should I use for a sunroom in Ottawa's extreme climate?

Glass is one of the most important decisions in a sunroom, because it has to perform in both deep winter cold and summer...

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Sunroom Additions

Do I need a building permit for a sunroom addition in Ottawa?

In most cases, yes. The City of Ottawa lists one- and two-storey additions among the projects that need a building permi...

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Sunroom Additions

Can I convert my existing screened porch to a four-season sunroom in Ottawa?

Converting a screened porch to a four-season sunroom is doable, but the work is usually more involved than people expect...

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Sunroom Additions

What is the best heating option for a sunroom addition in Ottawa?

Heating is one of the most important design decisions in a sunroom, because the room has more glass than any other space...

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Sunroom Additions

Will a sunroom addition increase my heating bills significantly in Ottawa?

A sunroom addition will increase your heating bills, because you are adding heated space with a lot of glass. How much d...

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Sunroom Additions

What roof style works best for a sunroom in Ottawa to handle snow loads?

Ottawa gets a lot of snow, and the roof of a sunroom addition has to carry that load safely winter after winter. The Ont...

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Sunroom Additions

Can I build a sunroom on a deck foundation in Ottawa?

In most cases, an existing deck foundation is not enough for a proper four-season sunroom, and trying to reuse one witho...

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