How to Design a Light-Filled Open Plan Kitchen–Living–Diner (That Works Year-Round)

  • November 2025
  • Kieron Peaty

Open plan kitchen–living–diner spaces are at the heart of many of our clients’ projects — and for good reason. When done well, they bring people together, enhance the way you live, and make even modest homes feel spacious and connected. But it’s not just about knocking down walls and adding bi-folds. At Studio 40, we believe the best open plan spaces are designed to feel calm, light-filled, and comfortable all year round — without relying on excessive glazing or energy-hungry heating. Here’s how we approach it.

Billericay architects

1. Understand How Light Moves Through the Day

Before reaching for rooflights or full-width glass doors, we always study how the sun moves across your home. The orientation of your property matters — a south-facing garden brings different opportunities (and challenges) than a north-facing one.

We look at: - Morning vs. afternoon light - Shading from trees or neighbouring buildings - Solar gain in summer vs. winter

The goal is to let in as much soft, indirect light as possible — while avoiding glare and overheating.

2. Use Glazing Strategically, Not Excessively

More glass doesn’t always mean more light — and it definitely doesn’t mean more comfort. Instead of floor-to-ceiling glazing across one wall, we often combine:

  • Slimline windows at eye level
  • Clerestory windows for high-level light
  • Rooflights positioned to wash light across walls
  • Framed garden views, rather than full walls of glass

This layered approach provides a soft, ambient light that changes throughout the day — and feels calmer to live in.

3. Balance Open Plan with Zones and Flow

Light is just one piece of the puzzle. Great open-plan spaces also: - Feel purposeful, not cavernous - Allow for different moods — cooking, relaxing, working - Have clear circulation routes

We often use changes in ceiling height, floor finish, or furniture placement to subtly zone spaces without losing openness.

This creates a sense of calm — and makes the most of the natural light in each part of the room.

4. Choose Materials That Reflect Light Softly

White walls aren’t the only answer. We favour natural, light-toned materials with depth and texture: - Lime plaster or clay finishes - Pale timber or cork flooring - Soft-toned cabinetry and joinery - Matte rather than glossy surfaces

These choices bounce light without creating glare — and feel warm even on grey winter days.

5. Consider Comfort All Year Round

Many homeowners worry about open-plan spaces feeling cold in winter or too hot in summer. We address this through: - Orientation and window placement - Deep reveals or overhangs to reduce summer glare - High levels of insulation and airtightness - Underfloor heating and natural ventilation

It’s not just about how the space looks — it’s about how it feels to live in, every day of the year.

6. Bring the Garden In — Without Losing Privacy

Connecting to the outdoors doesn’t have to mean fully openable walls. We think carefully about: - Garden layout and planting - Frame-worthy views - Thresholds and transitions

Subtle changes in level, planting, or materials can help your home and garden feel like one — while still feeling private and enclosed.

Our Approach

We approach every project with care, light and flow in mind. Whether you’re extending, remodelling or starting fresh, our goal is to create spaces that are not just brighter — but better to live in.

Looking to create your own calm, light-filled kitchen–living–diner? Let’s talk.

We'd love to hear from you.

Book your free consultation to tell us more about your project and to find out how we can help.