Some renovations pay you back. Some break even. And some you should only do if you intend to enjoy them yourself for at least eight years, because the appraiser is going to give you a fraction of what you spent.
This is the list nobody wants to write because it argues people out of projects. I am writing it because clients keep asking me, and the polite answer is doing them no favours. After 20 years of pricing Ottawa renovations, here are ten projects with the worst resale ROI, why each one underperforms, and when it might still be the right call.
1. Inground pool
Cost drivers6ac">Cost drivers6ac">Cost drivers6ac">Cost drivers6ac">Cost drivers6ac">Cost drivers6ac">Cost drivers6ac">Cost drivers: pool size, finish (vinyl, fibreglass, concrete), decking, fencing, and site grading. Resale impactc5">Resale impactc5">Resale impactc5">Resale impactc5">Resale impactc5">Resale impactc5">Resale impactc5">Resale impactc5">Resale impactc5">Resale impact: -10% to +5%.
The single worst renovation ROI we see, almost without exception. A pool in Ottawa is usable about 14 weeks a year. The annual maintenance burden for chemicals, opening, closing, and repairs is significant and never goes away. The next buyer either wants the pool (and discounts your asking price for the maintenance burden) or does not want it at all (and discounts your price by the cost of removal).
Pools work for families with young kids who will use it for 8+ years. They do not work as a flip play, ever. If you must, an inground pool with a well-designed surround in a 4,500+ sq ft Manotick home recovers about 30% of its install cost on resale. In a Barrhaven home it recovers about 10%.
2. High-end home offices
Cost drivers: custom built-ins, integrated lighting, soundproofing, and finish level. Resale impact: appraiser sees a "den" or a small bedroom, no matter what you spent.
The pandemic-era home office boom produced beautiful spaces and terrible ROI. Custom millwork wall units, integrated lighting, soundproofed glass walls, dedicated cooling. The next buyer either uses the room as a guest room or rips out the millwork to put in a bed.
The fix: build the office out with removable furniture instead of fixed millwork. A great desk, beautiful bookcases, and good lighting can come with you. A wall of built-in cabinetry stays with the house and gets ignored on the appraisal.
3. Outdoor pizza oven
Cost drivers: oven type, masonry surround, counter, and gas or wood setup. Resale impact: negligible added appraised value.
I love a wood-fired oven. They make pizza nobody else can make. They also bake bread. They are also a permanent backyard installation that the next buyer almost never wants. The brick mass takes up 60+ sq ft of yard space, and removing it is a real demo job in its own right.
If you want a pizza oven, get a portable one. Something like the Ooni Karu 16 makes excellent pizza, costs a fraction of a built-in, and you can take it with you when you sell.
The "use it for 8 years" rule
For renovations with poor resale ROI, the math shifts if you stay long enough. Most personal-taste renovations break even at year 8, when the cost spread over your enjoyment time becomes reasonable and the next buyer's discount becomes a smaller share of your appreciation gains. If you are not staying eight years, do not do these renovations. Save the money.
4. Outdoor kitchen
Cost drivers: built-in grill, sink, fridge, counter material, and the plumbing and gas line runs. Resale impact: a small fraction of the build cost in appraised value.
Outdoor kitchens have a 14-week usable season in Ottawa. The plumbing must be drained every fall to prevent freezing. The stainless steel counter scratches and the appliances rust. By year 8 the sink fixtures have failed and the under-counter fridge needs replacement.
The pencil math gets ugly fast. An outdoor kitchen used 14 weeks a year for 10 years works out to a high cost per use, which is fine if you love it, but on resale you recover maybe a quarter of the build cost.
5. Sound studios and home theatres
Cost drivers: acoustic treatment, projection and screen, riser seating, dedicated power, and soundproofing. Resale impact: -5% to +0%.
The fully built home theatre in the basement, with the riser seating, the projector, the soundproofing, the dedicated rear wall for the screen. Spectacular while you live there. On resale, the next buyer wants a rec room, not your specific theatre setup. The riser becomes a problem. The lack of windows becomes a problem. The dark wall colour becomes a problem.
The compromise: a great TV room with a 75-inch flat panel, good speakers, comfortable seating, and a normal wall colour. A fraction of the cost of a full theatre build, it performs 80% as well, and the next buyer loves it.
6. Very personal colour choices
Cost: paint and tile work alone is rarely huge, but the resale hit can be substantial. Resale impact: -2% to -5% on listing price.
The bright purple master bedroom. The fuchsia powder room with matching tile. The kitchen island painted Tiffany blue. The next buyer cannot picture themselves living there. The home sits on the market 30 days longer than comparables. The buyer who eventually offers does so at a 3% discount and budgets to repaint everything in their first weekend.
You can love colour. Just keep the boldest choices in spaces that are easy to undo (paint) rather than tile, cabinetry, or fixed finishes.
7. Wine cellars
Cost drivers: cooling unit, insulation and vapour barrier, custom racking, and finishes. Resale impact: a small fraction of the build cost in appraised value.
Custom wine cellars look spectacular and rarely recover their cost. Most buyers do not have 800 bottles. The cooling unit eventually fails, and replacing it is a costly repair on its own. The custom racking is fitted to a specific bottle inventory and the next collector usually wants different sizing.
If you collect wine, a wine fridge holds 200+ bottles, sits in a normal cabinet niche, and walks away with you when you sell. ROI infinity.
8. Hot tubs (built-in, not portable)
Cost drivers: the tub unit, structural deck or pad, surround, cover, and electrical run. Resale impact: negligible added appraised value.
A portable hot tub on a deck is roughly cost-neutral on resale. A built-in hot tub is treated like a small pool and inherits the same buyer discount. The hidden problem is operating cost: a steady monthly electricity draw year-round, plus chemicals.
The single best test for a renovation's ROI is to ask whether a buyer can imagine using it the way you do. If they cannot, the appraiser will not give you what you spent.
9. Glass-walled showers in primary bathrooms with no separate tub
Cost drivers: tile area, frameless glass, shower system, waterproofing, and vanity. Resale impact: -3% to +2%, conditional on the rest of the house.
This is a gentle one. Walk-in showers are a strong design choice for adults. But on resale, families with young kids strongly prefer a primary bathroom with a tub option. If you remove the tub from the only bathroom on the second floor, you narrow your buyer pool meaningfully.
The fix: keep a tub somewhere on the upper floor, even if it is in the secondary bathroom. The primary can be shower-only.
10. Top-of-the-line kitchen in a mid-tier home
The problem: a luxury-tier kitchen built into a mid-tier house. Resale impact: appraises at the neighbourhood ceiling, not at your spend.
Spending top-luxury money on a kitchen in a Findlay Creek 2018-build, where the comparable sales sit at the neighbourhood ceiling, does not move the listing price proportionately. The appraisal hits that ceiling regardless. A well-built mid-range kitchen in that house gets a similar bump for far less.
The rule of thumb: a kitchen renovation should not exceed about 15% of the home's market value. Stay within that share and you are matched to the house; go well beyond it and you are over-improving.
What recovers well
For balance, here is the short list of renovations that actually return their cost or close to it on Ottawa resale:
- Kitchen at neighbourhood-appropriate spend: 70-90% recovery
- Bathroom at neighbourhood-appropriate spend: 60-80% recovery
- Legal basement suite (Bill 23): 90-110% recovery, sometimes more
- Adding a second bathroom where there was one: 80-95%
- Curb appeal (paint, front door, landscaping at a modest spend): 90-130%
- Garage door replacement: 85-95%
- Ground-floor primary suite addition (older buyers): 70-110%
The question is not "should I renovate." It is "should I renovate this specific thing in this specific house if I am selling in five years." If you are staying ten or more, ROI matters less than how you live in the space every day. If you are flipping or selling soon, stick to the high-recovery list.
Free 48-hour feasibility on any renovation is on the table. We will tell you what your project recovers. If the answer is bad, we will tell you that. See our full-home renovation page for how the design phase typically structures the conversation.