Three kinds of renovation, and only one of them comes back.
Every renovation decision is one of three things, and most of the money people regret was spent without knowing which one they were doing.
Work the house needs. The roof, the heater, the failing service panel, the tree leaning toward the bedroom. There's no return on this in the sense people mean. There's just a house that keeps working. Do it, and don't expect a buyer to pay extra because you did — they'll expect it.
Work you want. The kitchen you'll actually enjoy, the bathroom that stops annoying you every morning, the deck. This is legitimate spending. It buys you living in your house differently for however many years you stay. Calling it an investment is a story people tell to feel better about the price, and it's usually the story that leads to overspending.
Work that returns at sale. Real, smaller than television suggests, and highly local.
Knowing which of the three you're doing is most of the skill.
What actually tends to return
The pattern across most markets is consistent even when the numbers aren't: exterior and entry work outperforms interior remodeling, and modest projects outperform expensive ones as a percentage of cost. A new front door, garage door, or siding repair typically recovers more of its cost than a high-end kitchen, because buyers price the house from the curb before they price the finishes.
Two more that reliably matter and cost little: cleanliness and light. Clean windows, working bulbs in every fixture, trimmed landscaping, and paint in a neutral color do more per dollar than any structural change. That isn't a renovation, it's presentation, and it's why the pre-sale checklist and the renovation budget are different documents.
Why we don't publish percentages
Cost-versus-value figures change every year and vary enormously by region — a project that recovers most of its cost in one metro recovers a fraction in another. Any number you read in a book is wrong by the time you read it.
The live source is Remodeling magazine's annual Cost vs. Value report. It's free, it breaks out by region, and it's the thing to check before you commit. We'll tell you when the new one lands.
The questions to ask before you spend
How long are you staying? Under three years, lean hard toward what returns and away from what you want. Over ten, the reverse — you're buying your own life, not a resale number.
Is it the worst house on the street or the best? Improving the worst house toward the neighborhood norm usually returns. Improving the best house past the neighborhood ceiling usually doesn't, because the block sets a limit no kitchen overcomes.
Does it fix a defect or add a luxury? Defects suppress offers. Luxuries rarely raise them by their cost. If the inspection would flag it, it's a defect and it's worth doing.
Would a buyer notice it in ten seconds? That's roughly how long the first impression takes. Money spent where it's visible in that window works harder than money spent anywhere else.
The one that surprises people
Ordinary maintenance, done on time, does more for eventual value than any single renovation. A house with a documented service history, a sound roof, and no deferred repairs gets cleaner inspections, fewer credit requests, and fewer buyers walking. That's not glamorous and it doesn't photograph, but it's where the money is.
Which is the argument for The Maintenance Year, and the reason it's the guide we'd have you read first.
Read next: The Not So Big House by Sarah Susanka, in NOW — the case that how a house is designed matters more than how large it is, which is the same argument as this guide made at the level of the whole building.