A bespoke window seat turns one of the most underused spots in a home into somewhere you will actually want to sit, with a generous amount of hidden storage beneath you. The space under a window is usually wasted, or filled with a radiator and a few awkward ornaments. Built properly, it becomes a reading nook, a place for the kids to perch, or extra seating when guests come round, all while swallowing the clutter that otherwise ends up on your floors.
At Craig Smith Joinery, we have spent 30 years building fitted furniture across Nottingham and the surrounding areas. Every window seat we make is made to measure, so it fits your bay, recess or landing window exactly, however uneven the walls. This guide covers the types of window you can use, the storage options, what makes a window seat comfortable, and what to expect on cost.
Every piece we make is built to the room, so see our bespoke furniture in Nottingham if you have a space that needs solving.
What Is a Window Seat?
A window seat is a fixed, built-in bench that sits in or beneath a window, usually running the full width of the opening. Unlike a freestanding bench, it is fitted into the architecture of the room, so it looks as though it has always been there. It is a classic example of architectural joinery, where woodwork becomes a permanent part of the home.
A well-designed window seat does three jobs at once:
- It gives you somewhere comfortable to sit with natural light and a view
- It provides storage in the space underneath
- It makes a plain window feel like a feature of the room rather than a gap in the wall
Why a Made-to-Measure Fit Matters
Windows are rarely as regular as they look. In older Nottingham homes especially, window reveals can lean, sills can slope, and walls can sit slightly out of square. A standard bench pushed into that gap will leave visible spaces at the sides, wobble on an uneven floor, or simply fail to line up with the window above.
A bespoke window seat is measured on site and built to match:
- We scribe the edges so they follow the true line of the walls
- We plan the seat height around the sill
- We allow for radiators, pipes and sockets from the start
- The result is a tight, gap-free fit that feels solid when you sit on it
Window Types That Suit a Window Seat
Almost any window with enough depth can take a seat. The right design depends on the shape of the opening and how you want to use it. For more on how windows are built and repaired, see our guide to window joinery.
| Window Type | What Works Well | Things to Consider |
| Bay window | A seat running around the curve or angles, with plenty of storage | Angled corners need precise cutting and scribing |
| Standard recess | A neat bench between two reveals, often with shelves either side | Works best where the recess is at least 30cm deep |
| Stairwell or landing window | A slim seat that makes a quiet corner out of dead space | Needs safe seat height and fixing, with care around stairs |
| Dormer or loft window | A low seat that makes the most of sloping ceilings | Headroom and ceiling angles shape the design |
| Large picture window | A long, uninterrupted bench with a view | Consider sun exposure and cushion fabric |
Bay Windows
Bay windows are the classic home for a window seat. The curved or angled shape gives you a generous bench with space for several people, and the storage beneath can be substantial. Because each angle is different, the seat is cut in sections and fitted piece by piece, which is where precise measuring really pays off.
Standard Window Recesses
A plain window in a thick wall, common in period properties, creates a natural recess. A seat fitted between the reveals feels snug and sheltered, and shelves or cupboards can be added either side to turn the whole wall into a feature.
Stairwell and Landing Windows
Landings often have a window and nothing else. A slim window seat here turns wasted space into a quiet spot for reading, and provides storage for items you would otherwise carry up and down. Safety matters, so we plan the seat height and fixings carefully around the stairs, in the same way we approach wooden handrails and balustrades on landings.
Storage Underneath: The Real Benefit
The storage is what makes a window seat earn its place. A typical seat has a cavity of 30 to 40cm in height, which is enough for a lot of everyday items, and it sits in a part of the room where nothing else could go.
Drawers
Pull-out drawers are the most convenient option. They slide out to the front, so you can reach everything without lifting a lid or moving cushions. They suit items you use regularly, such as toys, games, shoes or blankets. Drawers need a little more clearance, so they work best in a seat with an open front or a wide, unobstructed run.
Lift-Up Lids
A hinged lid on top of the seat opens to reveal a deep, open cavity. It gives you the biggest single storage space, ideal for bulky items like bedding, cushions, suitcases or seasonal decorations. The lid is fitted with soft-close hinges or supports, so it lifts easily and lowers gently without trapping fingers.
Cupboard Doors
Doors fitted to the front of the seat give a neat, traditional look and let you add internal shelves. They work well for books, board games and smaller items you want to keep tidy and in view.
Comparing the Options
| Storage Type | Best For | Main Advantage | Main Limitation |
| Drawers | Everyday items, toys, shoes | Easy access, no lifting | Needs clear space at the front |
| Lift-up lid | Bulky, occasional items | Largest open space | You must clear the seat to open it |
| Cupboard doors | Books and tidy storage | Shelves for organising | Smaller openings than a lid |
| Mixed layout | Most households | Combines easy and deep storage | Slightly more design time |
Many of our clients choose a mixed layout, with drawers at the front for daily items and a lift-up section at one end for bulky storage. We plan the split around what you actually need to keep.
Planning Around Radiators
Radiators under windows are very common, and they affect the design:
- A ventilated panel or grille in the front of the seat lets heat escape into the room
- The radiator remains accessible for servicing
- In some cases, the seat can be built to one side of the radiator, with the storage planned around it
Making the Seat Comfortable
A window seat is only worth having if you enjoy sitting on it. A few practical details make the difference.
| Detail | Typical Guide | Why It Matters |
| Seat height | Around 40 to 50cm | Similar to a standard chair, so feet rest on the floor |
| Seat depth | Around 45 to 55cm | Enough to sit upright or curl up with a book |
| Height below the sill | Set below the window sill | You can look out comfortably, and the sill does not dig into your back |
| Cushion | Fitted foam, made to size | Gives support and a neat, snug fit |
Shallower seats work in tight spaces. Loose scatter cushions add softness and colour, and we can advise on foam thickness and fabric. Many clients choose a hard-wearing, easy-clean fabric if the seat will be used by children or pets.
Materials and Finish
Window seats are usually built from solid timber or high-quality boards, finished to match the rest of your room.
- A painted finish suits most homes, and you can colour match the seat to your woodwork or choose a contrasting shade for a bolder look
- A natural or stained timber finish gives a warmer, more traditional feel
- Durable, wipeable paints and well-sealed finishes cope with sunlight, condensation and occasional spills
- Stable materials will not warp near the window
Our timber joinery guide explains how different timbers behave if you want to learn more.
Example: A Bay Window Seat With Mixed Storage
Imagine a family in a 1930s semi in Nottingham. Their living room has a bay window that gets plenty of light, but the space beneath it is taken up by a radiator and a pile of children’s toys. The bay is used as a dumping ground, and the room feels cluttered as a result.
We measure the bay carefully, noticing that the angles are slightly out of true, as they often are in houses of this age. We design a seat that follows the three sides of the bay, with a ventilated front panel over the radiator, so the heat still reaches the room.
On the left and right sections, we fit deep drawers for toys and games. In the centre, we build a lift-up lid with soft-close supports, giving the family a large space for blankets and cushions. A custom-made cushion in a hard-wearing grey fabric sits on top.
Once fitted, the bay becomes the favourite spot in the house. The children read there, the toys have a home, the radiator still works, and the living room feels tidier and larger. The seat fits so well that visitors assume it came with the house. You can see similar work in our projects.
What Does a Window Seat Cost?
Cost depends on the size of the window, the shape, the storage type and the finish.
| Project Type | Typical Level |
| Simple seat in a standard recess, with a lift-up lid | Lower end |
| Seat with drawers or doors in a standard window | Mid range |
| Bay window seat with mixed storage and radiator panel | Mid to higher range |
| Large bay with shelves, cupboards and premium finishing | Higher end |
The main factors that affect the price are:
- The length of the seat
- The number of angles in a bay
- The type of storage
- Any radiator work
- The finish and cushion
Every window is different, so the most accurate figure comes from a free quote based on your room. If the seat is part of a wider update, our home renovations service can bring it together.
Related Joinery
A window seat often works well alongside other built-in furniture. Our alcove cabinets can sit either side of a window or chimney breast, giving you matching storage across the whole wall. Our fitted bookcases can be built above or beside the seat, so you have books within arm’s reach of your reading spot. We can design everything together, so the finish and proportions feel consistent.
Window Seat FAQs
Can a window seat be built over a radiator?
Yes. We fit a ventilated panel or grille in the front of the seat, so heat can still circulate, and the radiator stays accessible. In some cases, we build the seat around the radiator instead.
How much weight can a window seat take?
A properly built window seat is designed to support several adults. We fix it securely to the wall and floor, and build the frame with solid supports, so it feels sturdy and safe.
What is better, drawers or a lift-up lid?
Drawers are easier for everyday items, while a lift-up lid gives you a bigger space for bulky things. Many people choose a mix of both, which we can plan around what you store.
Can a window seat fit into a small window?
Yes, as long as the window has enough depth for a bench. Even a slim seat can add useful storage and a place to sit.
Can you make a window seat in a bay with angled corners?
Yes. We cut each section to the angle of your bay and scribe the edges, so the seat fits tightly without gaps.
Do I need to buy cushions separately?
We can arrange a made-to-measure cushion, or you can choose your own. A fitted foam cushion gives the best comfort, and it matches the seat dimensions exactly.
How long does a window seat take to make?
It usually involves a measuring visit, a workshop build and a fitting visit. The timeline depends on the size and complexity, and we agree it as part of your quote.
Areas We Cover
Based in Nottinghamshire, we design and fit bespoke window seats across Nottingham and the surrounding areas, whatever the shape or size of your window.
Make Your Window Work Harder
An empty window recess is a missed opportunity. With a well-made window seat, you gain comfortable seating, plenty of hidden storage and a feature that makes the whole room feel more considered. At Craig Smith Joinery, we combine careful measuring, precise fitting and 30 years of experience to build window seats that fit your home perfectly. If you are thinking about a window seat in Nottingham, call or contact us today for a free quote.