One of the first questions homeowners ask when they begin planning a major project is also one of the hardest to answer: How long will it take?

It’s tempting to think about the construction itself; the excavation, framing, finishes and final walkthrough. But for a custom home or substantial renovation, much of the timeline happens long before anyone arrives with a tool belt. Design, approvals, coordination, selections and planning can take months, and decisions made early can have a direct effect on what happens later.

There isn't one universal timeline. Your location, the complexity of the project, the site, the scope of the renovation and the professionals involved will all affect it. But understanding the broad sequence can help you plan with more realistic expectations.

While we won’t cover each step here, you can get the full picture by signing up to access our free magazine, The Reality of a Home Project, for a comprehensive breakdown.

Design: Where the Project Takes Shape

The design phase is about considerably more than deciding what you want your home to look like. Your architectural or design team needs to understand how you want to live, what the property allows, how the home will function, and what structural and regulatory requirements need to be addressed. For a major renovation, the existing structure adds another layer of investigation.

This is also where many of the decisions that influence the rest of the project begin to take shape. A rushed design phase rarely saves as much time as homeowners hope. Decisions that aren't resolved before construction can become changes, delays or additional costs later.

For a custom home or major renovation, six to twelve months or more for design is not unusual, depending on the scope and complexity. And if you're working with an existing plan or a design that can be adapted to your property, the process may be shorter. But that depends on how much can actually be reused.

Depending on the size/scope of the project, expect 6-12(+) months to design.

Permits: The Part You Can't Control

Once the design is ready, it may need to go through the permitting process. This is one of the most frustrating parts of a project for homeowners because there isn't much to do except wait for the reviewing authority to complete its work. Timelines vary significantly between jurisdictions and according to the complexity of the application.

But waiting for a permit doesn't mean the project stops. This is the time to work with your team on the next layer of preparation: confirming your budget, establishing a realistic construction start, completing interior design work, making key selections and getting organized for construction. If you're curious what that might look like, this is a great time to work through the Build program.

Depending on the jurisdiction and project, six to twelve months or more for permitting is possible. The important thing is to find out what your local authority is currently experiencing rather than planning around a generic permit timeline.

Depending on the complexity of the City and permit demands, expect 6-12(+) months.

Construction: The Part You Can See

Once approvals are in place and your contractor and team are ready, construction can begin.

This is the part most homeowners picture when they think about the length of a project: site preparation, excavation, foundations, framing, roofing, mechanical systems, interiors and all the work that eventually turns drawings into a home.

For a custom home, construction can take one to two years, depending on the size and complexity of the project.

A major renovation can be harder to predict because you're working with an existing structure. Once walls and ceilings are opened, conditions that weren't visible during design can sometimes change the scope or sequence of work.

Your contractor is responsible for managing the construction, but that doesn't mean the homeowner has nothing to do. There will still be decisions, selections, meetings, invoices, questions and moments where you need to understand what's happening before moving forward.

Depending on the size/scope of the project, expect 1-2 years to build.

The Timeline Is More Than a Construction Schedule

When homeowners ask how long their project will take, they're often asking how long they'll be living with construction.

But the more useful question is: How long should I allow from the beginning of planning to the day I move in?

For a custom home or major renovation, that can mean years rather than months.

A rough example might look like:

Design: 6 months
Permitting: 8 months
Construction: 18 months

Those periods aren't always completely sequential. Some work can overlap, and every project is different. But they demonstrate why a project that seems straightforward can take considerably longer than expected.

Start Earlier Than You Think

The biggest advantage you can give yourself isn't finding a way to rush the timeline. It's understanding it before you begin. The more clearly you understand the work ahead, the easier it becomes to make decisions at the right time, coordinate with your team and recognize when something needs your attention.

A home project doesn't become efficient because every decision happens quickly. It becomes efficient when the right decisions happen at the right time, in the right order.

So if you're thinking about building or undertaking a major renovation, don't start with:

“When can construction begin?”

Start with:

“What needs to happen before we're ready to build?”

That shift in perspective can change the entire way you plan your project.