Design
Lighting an Outdoor Room So People Stay In It
Whether people stay outside after dark is decided almost entirely by lighting, and almost entirely by lighting the surroundings rather than the features.
Two identical terraces, one of which empties at dusk and one of which is still occupied at eleven. The difference is rarely the furniture and rarely the heating. It is that one of them is comfortable to move around in after dark and the other is not.
The mistake: lighting the objects
The instinct is to light the beautiful things - uplight the tree, wash the wall, put something dramatic in the water feature. That produces excellent photographs and a space people leave, because none of it helps anyone see the step down to the lawn.
Light what people negotiate: steps, level changes, the edge of the terrace, the route to the door, the path back to the house. Get those right and the feature lighting becomes optional rather than compensatory.
Glare is the enemy, not darkness
A single bright fitting in a sight line ruins night vision for everyone facing it and makes the rest of the garden read as black. Several dim, shielded sources at low level produce a far more usable space than one bright one, and they use less power doing it.
The practical test: from every seat, can you see any bare lamp? If yes, shield it, lower it, or turn it away.
Low and warm
Light below eye level, aimed down. Warm colour temperatures - cool white reads as security lighting and makes an outdoor room feel like a car park, which is not what anyone is paying for. Consistency of colour matters too: mixing warm and cool fittings looks like an accident because it usually is one.
Layers, on separate switching
An outdoor room wants at least three: circulation light that is always on when the space is in use, task light where someone is cooking, and low ambient light for when everyone has sat down. On one switch, you get one mood, and it is usually too bright.
Do the cabling while the ground is open
This is the practical argument for deciding lighting early even if fittings come later. Running cable during construction is inexpensive; retrofitting it means lifting finished surface. It is worth laying conduit to positions you are only considering.
What the lake adds
Two things. Damp and wind off the water are hard on fittings, so specification matters more here than inland. And on a shoreline property, light spilling toward the water is both a neighbourly problem and a way of erasing the view you built the terrace for - the darker the water stays, the better it looks from a lit terrace.
Aim inward and downward. The lake supplies its own view; it does not need illuminating.