Leases & Planning · September 11, 2026 · 8 min read

Luxury Custom Home Construction vs. Renovation: How to Decide

Most people arrive at this decision having already half-made it, usually on price. They have been told renovating is cheaper, and at the level of dollars per square foot that is true. It is also the least useful way to make the call, because the two routes do not produce the same house and the cheaper one is only cheaper if it gets you what you actually wanted.

Key takeaway. The decision is structural, not financial. If more than roughly half the existing structure has to come out to reach the result you want, you are paying demolition costs to protect a frame you are mostly replacing — and you still inherit the original floor plate. Below that threshold, renovation almost always wins.

The Four Tests That Settle It

Run these in order. The first one that gives a clear answer usually is the answer.

1. How much structure survives? Walk the house with the drawings and mark what stays. Foundation, floor structure, roof structure, exterior walls. If the marked-up plan shows more than half of it going, the frame is no longer an asset you are preserving — it is an obstacle you are paying to work around.

2. Does the existing floor plate allow the result? This is the test people skip. A 1970s house has ceiling heights, window head heights and a structural grid that were set by a different era's assumptions. Some of that can be changed. The rest quietly caps how good the finished house can be, and no finish budget fixes a ceiling that is two hundred millimetres too low.

3. What does the zoning allow today? In much of the Lower Mainland, what you could build new on the lot is larger or better sited than what is standing on it. If a new build unlocks materially more floor area, better orientation or a legal secondary suite, that value belongs in the comparison. Equally, an existing house may be legally non-conforming in ways a new build would not be allowed to reproduce, which cuts the other way.

4. How much risk can the budget absorb? A new build is priced against drawings. A renovation is priced against drawings plus assumptions about what is behind the walls. Both have contingency; the renovation's is doing more work. If a fixed number matters more than anything else, that asymmetry is real.

What “Custom” Actually Means

The word gets used to mean expensive, and that is not what it means.

A custom home is one where the drawings are produced for your site and your household, rather than adapted from a plan that already existed. That has three practical consequences, and none of them are about finish level.

The design phase is longer. Six to twelve months is normal before a permit application is even complete, because nothing is being reused.

The decision volume is high. A genuinely custom home asks the owner for several hundred decisions — not just tile and paint, but window operation, ceiling transitions, where the door swings, how the millwork resolves at a corner. The schedule assumes those decisions arrive on time, and the most common cause of delay on a custom home is not a trade, it is an open selection.

The critical path is procurement, not construction. Stone, custom millwork and specialty glazing have lead times measured in months. They are ordered against the framing schedule rather than after it, which means decisions that feel early are not early at all.

A renovation can be entirely custom in all three senses. The word describes how the drawings were produced, not whether the walls are new.

Where the Money Goes on a New Build

Our published range for luxury residential construction is $300–$400 per sq ft turnkey — roughly $1,350,000–$1,800,000 for a 4,500 sq ft home, or $1,050,000–$1,400,000 for a 3,500 sq ft one. Land, design fees, permits and landscaping sit outside that.

Inside it, the distribution is fairly stable. Structure and envelope take the largest single share and are the part you cannot economise on without regretting it. Millwork, stone and glazing are where a high-finish home separates from a standard one, and they are also the three items with the longest lead times. Mechanical and electrical are larger than most owners expect on a modern house, because heat pumps, in-floor systems, air quality and lighting control all landed in the same decade.

What moves the number most is finish level, millwork and site conditions — in that order. A difficult site with a steep grade, poor soil or a constrained access route can add more than an upgrade from a mid to a high finish schedule across the whole house.

Where the Money Goes on a Major Renovation

A major renovation puts the money somewhere quite different, and the shape of the budget is the clearest signal of which project you are really in.

The large line items are demolition, temporary works, structural intervention, and systems replacement. None of those are visible in the finished house. An owner looking at a renovation budget often finds that a meaningful share of it buys nothing they can see or show anyone — it removes what was there and makes the rest legal and serviceable.

That is not an argument against renovating. It is an argument for knowing it before you start, because the disappointment usually arrives at the point where the budget is spent and the house looks like a construction site with good bones.

The second thing to plan for is discovery. Undersized electrical service, plumbing at the end of its life, structure that was modified by a previous owner without a permit, and envelope failures behind intact-looking cladding are all normal rather than exceptional. This is what the contingency exists for, and on a renovation it should be real rather than nominal.

The Case Nobody Argues For, and Should

There is a third option that gets dismissed too quickly: renovate less.

A great deal of what makes a house feel wrong is concentrated in a small number of places — the kitchen, the principal bathroom, the entry sequence, and how the main living space meets the outside. A focused project that fixes those four and leaves the rest alone is a fraction of the cost of either route above, delivers most of the daily experience, and can be done in a few months rather than a few years.

It is worth genuinely costing before committing to the larger versions. Owners who have run the comparison sometimes find the full renovation was buying them the last 20% of the result for the first 80% of the money.

What the Schedule Looks Like Either Way

New build: six to twelve months of design and permitting, then ten to fourteen months of construction for a 4,500 sq ft home. You are not living in it throughout, which removes an entire category of friction.

Major renovation: shorter on paper and rarely shorter in practice, because phasing around an occupied house, working within an existing structure and resolving discoveries all consume time that a new build spends in a factory instead. If you are staying in the house, the programme lengthens again and the experience is the part people underestimate.

Neither is fast. Anyone promising otherwise has not priced the selections.

Conclusion

Decide on structure, not on dollars per square foot. Mark up the plan, see how much of the existing house actually survives, and check whether the floor plate you would be keeping can deliver the result you want. If more than half the structure is going, build. If the bones are good and the plan works, renovate — and put the money into the four places that change how the house feels every day.

If you want the comparison against your actual property rather than against a rule of thumb, tell us the address and what you are trying to achieve. We will tell you what has to be planned before construction starts. Our guides to what a luxury home costs in Vancouver and how a luxury home builder differs from a general contractor cover the two questions that usually come next.