The cheapest square metres in the project are the ones outside the envelope. They are also the ones most often left until after the house arrives.
Plan the terrace with the plan, not after it
Where the main opening faces decides how the house is used for the next decade — morning light, evening light, the view, the wind and the neighbour's window are all fixed by that one choice. It is free to get right on the drawing.
Build the deck to the same level as the floor with no threshold step. A flush transition makes the interior read as continuous with the outside and is the single most effective way to make a compact house feel bigger.
Cover extends the season by months
An uncovered deck in northern Europe is usable for a handful of weeks. A roof over even half of it, or a fixed pergola with a retractable fabric, turns it into space you use from April to October and shelter you use all year.
It also protects the largest glazed elevation from summer sun, which is the cheapest cooling in the project.
Privacy is what makes it used
A terrace overlooked from a neighbouring plot stays empty. Planting, a slatted screen or simply rotating the house thirty degrees on the plot solves it, and all three are decisions made before the crane arrives.
For a rental unit this is not a preference but a review score. Guests rate outdoor privacy above almost every interior feature.
Storage and services outside
A weatherproof store on the terrace takes bikes, garden tools and seasonal equipment out of a house with no spare volume. An outdoor tap, a socket and a light on the deck are drawing items that cost almost nothing now.
If the terrace will carry a hot tub or a heavy planter, say so before the deck is designed. The structure is sized for people, not for 1,500 litres of water.
Materials that survive being ignored
Decking is the most weathered surface on the site. Thermally modified timber or a composite board both handle it; softwood needs annual attention and rarely gets it. On a rental unit, choose the one that survives neglect.
Keep the boards ventilated underneath and clear of leaf litter. A deck that cannot dry beneath is a deck that rots from below while looking fine on top.