
Some links in the "Complete the room" section below are affiliate links. If you buy through them, KFD may earn a small commission at no cost to you. I only point to things I'd actually specify.
There's a particular house I keep seeing all over Atlanta. Everything inside is greige. The kitchen has the same white shaker cabinets and the same brass pulls as the one three streets over. Someone spent real money making it look like nothing at all, because they were told buyers want a blank slate. That house will sell. It will also sell for about what the house next door sells for, and nobody who walks through it will remember a single room.
So does design actually add value to a home? Yes, and considerably more than most people expect. Just not in the way that greige house is betting on. After years of doing this in a city where I've watched the same streets change hands twice, here's the honest version.
How design actually moves the number
There are two separate things going on, and people constantly mix them up.
The first is what an appraiser can measure: square footage, permitted work, the age of the roof and the systems, the quality of the materials, the condition of everything. That's arithmetic, and design barely touches it.
The second is what a buyer feels in the first ninety seconds, and that's where design lives entirely. It doesn't show up as a line item on an appraisal. It shows up as speed and competition. A house that feels considered gets more showings, holds attention longer, and draws more than one offer. A house that feels careless gets a lowball and a list of repair requests. Same appraisal, different sale price, and the gap is design.
That's the mechanism. Not "add a backsplash, add eight thousand dollars." It's that good design changes how badly someone wants the house.
What actually holds value
Light, and the fixtures that shape it. The single most common thing I hear buyers say is that a house felt dark. Usually the windows are fine and the lighting plan is the problem: one harsh ceiling fixture per room, all of it at the same height, all of it too cool. Layered light at different levels reads as warmth and generosity, and it costs less than almost anything else on this list. I go through the whole approach in my guide to interior lighting.
Proportion and flow. How rooms relate to each other is felt instantly and is nearly impossible to fake. This is also where I'd push back on a decade of advice about knocking down every wall. Open concept solved a real problem and then got applied to houses that never had that problem, and I've written about why it's going out of style. Defined rooms are coming back because people discovered they'd like a door.
Materials that age well. Solid-core doors, real stone, actual wood, wool underfoot. Buyers can't always name what they're responding to, but they can feel the difference between a house built with intention and one assembled from the cheapest version of everything. Cheap materials don't just look cheap on day one. They look worse every year, which is the part flippers count on you not noticing until after closing.
Kitchens and baths, done properly rather than fashionably. These two rooms carry disproportionate weight, and they're also where trend-chasing does the most damage, because they're the most expensive rooms to redo. A kitchen built around good bones and quiet materials will still read well in fifteen years. A kitchen built around whatever finish is peaking right now starts aging the month it's installed.
Curb appeal, which is mostly restraint. My grandmother used to drive me around Buckhead pointing out houses, and what I absorbed on those drives was that the ones that hold up aren't the loudest on the street. They have good proportions, a front door you notice, and landscaping that looks like it's been there a while. Atlanta is a city in the trees, technically a rainforest, and the houses that look right here work with that canopy instead of clearing it.
What doesn't work: designing for resale
Here's where I part ways with most advice on this topic.
Designing for an imaginary future buyer produces houses nobody loves, including you, for however many years you live there before selling. And it doesn't even accomplish what it sets out to do, because the blank-slate house competes purely on price. You've stripped out the only thing that could have made someone want yours specifically.
The genuine risk people are trying to avoid is real, but they've misidentified it. It isn't personality. It's permanence. Paint is reversible in a weekend. A lavender mosaic tile bathroom is a demolition. Bold on the reversible things, disciplined on the permanent ones. That's the whole rule, and it lets you actually live in your house.
The other thing that quietly costs money is unfinished business. A half-done renovation, a room being used for storage, three different white paints meeting at a corner. Buyers read that as "what else did they not finish" and price the unknown accordingly.
The listing photos are the real showing
Almost every buyer sees the house on a phone screen before they see it in person, and photographs are unforgiving in a specific way: they flatten everything. A room with layered light, a real rug, and some actual contrast photographs with depth. A flat beige room photographs as a flat beige rectangle, because there's nothing in it for the camera to find.
This is the most underrated argument for design over staging. Staging is a costume the house wears for three weeks. Design is what makes the photographs good in the first place. If you want the tactical side of that, there are staging tips worth following, but they work far better on a house that was already thought about.
Where value and living well line up
The resolution to all of this is less complicated than the advice industry makes it sound. Build a house you love, using things that last, and the value takes care of itself as a byproduct. An investment piece is never overrated if you truly love it, and that's as true of a floor as it is of a rug.
A good wool area rug is the clearest example I know. It anchors a room, gives a photograph somewhere to land, and unlike almost every other improvement on this list, it leaves with you. I've made the longer case for why a luxury rug earns its price if you want it. Removable wallpaper is the other one I'd point to, because it's exactly the reversible bravery I described above: go bold in a powder room or a dining room, and take it down in an afternoon if the next owner wants beige.
And if you're weighing whether to bring in help, it's worth knowing what that actually involves and what it runs. I've written plainly about the case for hiring a designer and what it costs.
Complete the room
The rug and the wallpaper are ours. For the rest of what's on this list, here's what I'd actually shop: sample pots in threes before committing to any paint color, oversized cabinet and door hardware in unlacquered brass or aged bronze, a pair of sconces to get light off the ceiling, a properly framed entry mirror, and better house numbers and a real front-door set, which is the cheapest curb-appeal upgrade there is.
Frequently asked questions
Does interior design increase a home's value?
Not directly on an appraisal, which measures square footage, condition, and permitted work. Design affects value through demand: a considered house shows better, holds buyer attention longer, and attracts more competing offers, which is what moves the final sale price. The effect is real but it arrives as speed and competition rather than as an appraised line item.
What home improvements add the most value?
Lighting, because it's cheap relative to its impact and dark houses lose buyers. Materials that age well, especially in kitchens and baths, since those rooms carry the most weight and cost the most to redo. And curb appeal, which is mostly restraint: good proportions, a front door worth noticing, and landscaping that looks established.
Does bold paint color hurt resale value?
Rarely, because paint is the most reversible thing in a house. The real risk is permanence, not personality. A saturated dining room repaints in a weekend; a heavily patterned tile bathroom is a demolition. Be bold on the reversible surfaces and disciplined on the permanent ones.
Should I renovate before selling or sell as-is?
Finish what's already started before beginning anything new. Buyers price unfinished work as an unknown and discount it heavily, so a half-done renovation costs more than no renovation. Beyond that, paint, lighting, and hardware give the best return for the money because they change how the house photographs and feels without opening walls.
Do listing photos affect a home's sale price?
Substantially, since nearly every buyer sees the house on a screen first. Photographs flatten a space, so rooms with layered light, real texture, and genuine contrast survive the translation while flat, monochrome rooms read as empty rectangles. This is the strongest practical argument for designing a house well rather than staging it briefly.
Where to start
If you're selling soon, spend on lighting, paint, and hardware, and finish anything you've left half-done. If you're staying a while, stop designing for a buyer you've never met and build the house you actually want, choosing well on the permanent things so you can be brave on the reversible ones. That's the version that's still worth something in ten years, whichever way you end up going. Start with a wool area rug that anchors the room, or commission a custom rug in the exact size and palette your space needs. If you want the broader framework I design against, it's in my guide to timeless interior design styles.