Open Plan Living Room: How to Get the Space Right (and Add Real Value)

Open plan living rooms have become the heart of modern family homes - bright, flexible spaces where cooking, relaxing and entertaining happen together. Done well, an open plan layout can make a home feel larger, calmer and more premium. Done badly, it can feel echoey, cold, cluttered, or like you’ve simply removed a wall and hoped for the best.

At STAAC, we design and build open plan living spaces across Sussex and Surrey, combining architects, structural engineers and builders under one roof—so the layout, structure, services and finishes are planned as one joined-up project.

This guide explains how to create an open plan living room that looks high-end, works day-to-day, and stands up to UK building requirements.

What counts as an “open plan living room”?

Most homeowners mean one of these:

• Kitchen–diner–living all in one connected space

• Living room opened into dining room (often in period homes)

• Rear extension creating a large open plan family zone

• Knock-through between rooms, sometimes with a steel beam (RSJ)

The best approach depends on your home’s structure, how you live, and what “luxury” means to you - more light, better flow, cleaner lines, or a stronger connection to the garden.

The 7 design decisions that separate “nice” from “high-end”

1) Zoning: make one space feel like three (without walls)

A premium open plan room still needs definition. You want the freedom of open space, but with clear “zones” so it doesn’t feel like a furniture showroom.

High-performing zoning tools:

• A kitchen island that anchors the cooking zone

• Ceiling features (coffers, shadow gaps, or a change in ceiling height)

• Flooring strategy (continuous flooring for calm; subtle transitions for definition)

• Lighting layers (more on this below)

• Furniture placement that creates “edges” to each area

A good rule: if you can’t describe where people will naturally sit, eat, cook and walk through, the layout isn’t finished yet.

2) Circulation: protect the “walkway lines”

Open plan spaces fail when the main walking route cuts through the seating area or blocks the kitchen working triangle.

We design circulation so:

• The route to the garden doesn’t bisect the living zone

• The sofa area has a sense of “arrival” (not a corridor)

• The kitchen has safe clearances around ovens, islands and doors

This is where an architect-led plan pays for itself - because the room feels effortless.

3) Structure: removing walls isn’t just cosmetic

If you’re knocking through, you may need structural support such as a steel beam. The goal isn’t only “make it stand up” - it’s to integrate the structure so the finished space looks intentional.

Key structural considerations:

• Load-bearing wall assessment

• Beam sizing and bearing details

• Head height (avoiding awkward bulkheads where possible)

• Integration with glazing and extension openings

Because we have structural engineers in-house, the design and the structural solution are developed together - reducing surprises on site.

4) Light: the luxury multiplier

Natural light is one of the fastest ways to make a space feel high-end.

Popular options:

• Large sliding or bifold doors to the garden

• Rooflights (especially over kitchen/island zones)

• Glazed side returns for Victorian/Edwardian homes

• Thoughtful window proportions to balance privacy and brightness

The trick is not simply “more glass” - it’s controlling glare, overheating, and sightlines so the space feels comfortable all year.

5) Heating & comfort: stop open plan feeling cold

Bigger spaces need a comfort strategy. Luxury is as much about how a room feels as how it looks.

Common solutions:

• Underfloor heating (especially in extensions)

• Smart zoning controls so you’re not heating unused areas

• Air source heat pumps paired with low-temperature heating (great for eco-led builds)

• Draft control and insulation upgrades during the build

If you’re investing in an open plan remodel, comfort should be designed in - not patched later.

6) Acoustics: avoid the “echo chamber”

Hard floors, big glazing and open volumes can create echo. High-end homes feel calm because sound is managed.

Ways to soften acoustics:

• Rugs and upholstered furniture (planned, not accidental)

• Curtains or acoustic blinds

• Timber slats or feature walls with texture

• Thoughtful ceiling design and lighting placement

7) Storage: the secret to open plan looking expensive

Open plan spaces show everything. If storage isn’t designed in, clutter becomes the dominant “feature”.

High-value storage ideas:

• Full-height pantry and appliance housing

• Built-in media walls with concealed storage

• Bench seating with hidden compartments

• Utility room planning (often the best ROI upgrade)

Do you need planning permission for open plan living?

For internal knock-throughs, planning permission is often not required - but Building Regulations and structural safety still apply.

If you’re adding an extension, altering the exterior, or working in a conservation area/listed building, permissions may be needed.

We handle the design, approvals and build as one team, which helps keep the process clear and predictable.

How much does an open plan living room cost in the UK?

Costs vary based on:

• Whether it’s a simple knock-through or a rear extension

• Structural requirements (steelwork, padstones, foundations)

• Level of finish (glazing spec, flooring, joinery, lighting)

• Heating changes (underfloor heating, heat pump integration)

• Kitchen scope (new kitchen vs reworking existing)

The most expensive version is the one that gets redesigned mid-build. A joined-up design + engineering + build plan is what protects both budget and quality.

FAQ

• What is the best layout for an open plan living room?
  ‍The best layout creates clear zones (kitchen, dining, living) and protects circulation routes so walkways don’t cut through seating or cooking areas.

• Do I need a structural engineer to remove a wall?
  ‍If the wall is load-bearing, yes. A structural engineer designs the support (often a steel beam) to keep the building safe and compliant.

• How do I make open plan living feel cosy?
  ‍Use layered lighting, soft furnishings, acoustic control, and defined seating zones. Underfloor heating also helps comfort in larger spaces.

• Do open plan living rooms add value?
  ‍When designed well, they often increase buyer appeal by improving light, flow and lifestyle - especially when paired with quality finishes and garden connection.

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If you’re considering a knock-through, reconfiguration, or a full extension to create open plan living, we can guide you from concept to completion - architectural design, structural engineering and build delivery in one accountable team.

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