An open kitchen can seem like the obvious answer when a living room is small or dark. In many Lisbon apartments, the wall between the kitchen and living area stands exactly where more daylight, a daily dining table or easier circulation would help. Yet removing that division without assessing extraction, household routines and the way the kitchen is used can replace one layout problem with several everyday ones.
The useful question is not whether an open kitchen is more contemporary than a closed one. It is where people cook, how often they cook, who works or sleeps near the living room, how air moves through the flat and whether the wall has a technical or structural role. This guide helps you decide before ordering cabinetry, opening chases or requesting quotations.
Start with routines, not an inspiration layout
Observe the household for one ordinary week. Note when breakfast is made, whether meals are cooked every day, whether anyone works at the living-room table and whether the dishwasher runs at night. An open kitchen suits households that cook lightly, entertain often and want to talk while preparing food. It can be less comfortable where frying is frequent, schedules differ, children sleep early or remote work happens a few metres away.
Consider normal visual clutter too. In a closed kitchen, an untidy worktop is out of sight once the door is shut. In an open arrangement, the preparation area, draining rack and small appliances become part of the living-room view. That does not require a flawless kitchen; it requires planned storage, enough worktop space and a place for used dishes that does not take over the room.
If you need to improve a restricted layout without removing the division entirely, compare it with other ideas for making better use of a small home. A sliding door, enlarged opening, glazed upper panel or half wall with a counter may create connection without exposing the entire kitchen.
Extraction is the most important test for an open kitchen
Cooking releases moisture, particles, grease and odours. Portugal’s Directorate-General of Health advises airing the home while cooking and ensuring effective extraction of combustion gases from cookers, water heaters and boilers. Read the DGS indoor-air recommendations before assuming that an open living-room window will deal with the issue.
In a closed kitchen, the door helps contain some moisture and smells while the hood is running. In an open kitchen, the hood needs to capture effectively at the hob and the air route must work with the actual apartment layout. A recirculating hood may reduce odours, depending on its filter and maintenance, but it does not automatically remove moisture and cooking vapours outdoors.
Do not block existing vents or turn an extraction duct into cupboard space. In older buildings, confirm the duct route, the location of gas appliances and the supply of replacement air before closing a suspended ceiling. Portugal’s General Building Regulations address daylight and ventilation in dwellings and set out conditions for permanent air renewal in certain kitchens; consult the General Building Regulations text.
Deal with noise before connecting kitchen and living room
Open-kitchen noise rarely comes from one appliance. It is the combined sound of the hood, fridge, dishwasher, cutlery, cabinet doors and conversation at the worktop. When the living room also serves as a rest or work area, these sounds no longer stay in another room.
Choose appliances with their stated noise levels in mind, then address installation details: level the dishwasher properly, allow the correct ventilation gaps, use soft-close hardware and secure finishing panels well. An island with stools can be pleasant, but it makes the preparation area a permanent social zone; leave enough clearance to open the dishwasher, fridge and drawers without making people step aside.
If you value visual connection but need the option to contain sound, a light partition or sliding doors may suit better than full demolition. Our guide to sliding doors in renovation helps compare the space gained with the limits of acoustic sealing.
Bring daylight into the living room without weakening the work area
Openings between the kitchen and living room often improve the reach of daylight, especially in apartments with one façade and internal rooms. An open kitchen still needs independent task lighting: continuous light over the worktop, usable light at the sink and good visibility at the hob. One decorative pendant over the dining table will not support chopping, label-reading or cleaning.
Plan separate lighting circuits. At dinner, you should be able to lower the general kitchen light while keeping the living room comfortable. During preparation, the worktop should be clear and bright without your body casting shadows across it. See the guide to kitchen worktop lighting to coordinate profiles, colour temperature and position before upper cabinets are fitted.
Avoid opening a wall purely for brightness and then blocking the opening with tall cupboards, a fridge column or a large hood. First draw a simple elevation of both walls and mark outlets, appliances and cabinet heights.
Not every wall can be removed
Before assuming the kitchen can open into the living room, check wall thickness, beam direction, risers, ducts, electrical boxes and structural elements. A seemingly minor partition may conceal water and waste pipes, shared ventilation or a construction system that should not be altered without a proper technical assessment.
In Lisbon, internal work that does not affect structural stability, façades, the roof or other relevant elements may be exempt from prior planning control; that does not remove the need for technical checks or condominium rules. Where the work needs public-space occupation, for a skip or deliveries for example, specific procedures apply. Check the municipality’s information on exempt internal works and public-space occupation before organising the renovation.
If the hob, sink or dishwasher must move, assess drainage, ventilation and electrical capacity as part of the same layout. A well-resolved open kitchen depends on more than the wall that disappears; its services must remain safe and accessible.
Three in-between options that work well in apartments
A wide opening with a counter: this keeps the kitchen separate, carries daylight into the living room and creates a serving surface. It is useful when extraction is adequate but you want to limit noise and visible clutter.
A pocket or wall-mounted sliding door: this can stay open day to day and close for frying, cleaning or dishwasher cycles. Confirm early where the leaf will run and whether switches, outlets or cabinets occupy that wall.
A glazed partition: this lets light through while retaining a physical barrier. Clear glass reveals more; fluted glass reduces visual exposure, although it will not solve odours or noise by itself. In a small kitchen, this option can make the home feel larger without forcing the living room to function inside the work area.
The best choice is the one that makes repeated household tasks easier. If an open kitchen demands constant efforts to hide, air out or silence everyday activity, partial separation will often be the more comfortable design.
Considering opening your kitchen in a Lisbon apartment? Obra Lisboa can help turn your routines, building constraints and technical services into a clear renovation plan before demolition starts.
AI-generated editorial image; it does not depict an Obra Lisboa project.
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