Before buying, measure the entire route: entrance door, hallway width, turning space on the landing, and elevator opening. A 180 cm sofa may fit in the living room but not pass through a 70 cm hallway with a 75 cm door. This is the first filter and it eliminates more options than price does.
Step 1: determine the actual available volume
The wall width alone is not enough. Subtract 10 cm on each side if there is a radiator or outlet, and leave 60-70 cm clear in front of the sofa for walking through. In flats under 45 m², a two-seater sofa 140-150 cm wide and 80-85 cm deep works better than a 190 cm three-seater. According to documentation from compact furniture manufacturers, depth is the most overlooked dimension and the one that causes the most discomfort: 90 cm of depth in a living room 2.5 m wide leaves the walkway very tight.
Step 2: choose the type based on use
Options that do work
- Two-seater sofa with narrow arms: saves 8-12 cm of width compared with a wide-arm model.
- Clic-clac sofa bed: useful if you need an extra sleeping space, but the seat is firmer. I don’t recommend it as a main sofa if you’re going to watch series daily for years.
- Detachable chaise longue: allows you to separate the module and reposition it; some cheap models have fragile anchors, so check the joints.
- Sofa with detachable frame: assembled at home with screws and fits through narrow gaps. It is the usual solution for top-floor flats without an elevator.
What doesn’t work in small flats
Three-seater sofas with a fixed chaise and models with built-in electric recliners. The mechanism adds 10-15 cm of depth and requires 15-20 cm of clearance from the wall. In an 8 m² living room there is no room for that.
Step 3: verify disassembly before paying
Ask the seller whether the arms and backrest can be removed. A cheap 160 cm sofa may arrive in two boxes and be assembled with an Allen key in 30-40 minutes. If it doesn’t disassemble, check the packaging: some models come with the frame fully assembled, and a 165 cm box won’t turn on a 110 cm landing.
Frequent mistake: buying online without checking the return policy for assembled furniture. Many stores only accept returns if you repack it in its original box, and that box no longer fits in the flat. Confirm in writing before ordering.
Step 4: adjust the budget to what matters
In the cheap range (approximate, depending on the market, between €150 and €350), the upholstery is usually polyester and the frame is particleboard or pine. Prioritize frame and seat over aesthetics: a sofa with 20 kg/m³ foam seating deforms sooner than one with 25-30 kg/m³. I make no promises about durability: in this range, the realistic lifespan with daily use is around 3-5 years, less if there are pets.
If the flat is rented, consider a sofa with a washable cover. Replacing the cover costs less than replacing the sofa when it gets stained.
Step 5: check the delivery logistics
Confirm whether delivery is curbside or inside the home, and whether it includes carrying up stairs. In buildings without an elevator, many companies charge a per-floor surcharge. Also ask about removal of the old sofa: in small flats, having two sofas at once is unworkable and removal usually costs extra.
With these five steps you reduce the risk of buying a sofa that doesn’t fit, can’t be assembled, or can’t withstand daily use. If the space is very limited, a convertible armchair or a beanbag bed may be a better solution than forcing a two-seater sofa.