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A modern house extension with large sliding glass doors opens onto a patio with a dining table, surrounded by a garden.

House extension builders in Sevenoaks for useful extra space

Rear, side-return and two-storey ideas. Old and new rooms linked carefully. Saturday working available.

What makes the project easier on you

Several trades, one plan

Larger extension work can draw on trusted trades so structure, services and finishes stay aligned.

Old and new space connected

We plan light, heating and room flow so the extension feels part of the house, not stuck on.

Access thought through early

Deliveries, working space and routes through the property are discussed before the build begins.

Planning the build around how you live

When the house starts feeling tight, an extension can be the difference between coping and enjoying the space again. We help shape practical options at Trojan Construction, including rear, side-return, wraparound and two-storey work, depending on the property, the layout you want and any approval requirements. The point is not just to add square footage for the sake of it. Trojan Construction looks at how you will move through the new area, where light should come from, how heating and utility routes will run, and how the extension joins the existing house so it feels properly part of it.

Two people stand in a bright, modern kitchen with one pointing out features to the other.
A modern house extension with large sliding glass doors opens onto a patio with a dining table, surrounded by a garden.

From first assessment to final connection

Extension work needs a clear sequence. We start by discussing the existing house, access, structural demands and the kind of room you are trying to create. From there, the job typically moves through groundworks, structure, roofing, service routes, internal preparation and the finishing stages that tie the new space back into the old one. Larger builds often need several trades working in step, and our trusted trade network lets us scale that side of the project without losing grip on the detail that makes the finished space work day after day.

Frequently asked questions

What kinds of extension can we talk through?

We can discuss rear, side-return, wraparound and two-storey ideas, subject to the property, the design and any approval needs. The first step is working out what space you need and how it should connect with the rest of the house.

What needs deciding before building starts?

Access, structure, heating, natural light, utility routes and the link between old and new rooms all matter early on. Sorting those points before work starts helps the build run more smoothly and avoids a space that looks bigger but works worse.

Can we handle larger multi-trade extension work?

Yes. Bigger extension jobs often need several building disciplines at different stages, and we can bring trusted trades together to suit the scope. That helps keep groundworks, structure, internal work and finishing moving in the right order.

A modern house extension with large sliding glass doors opens onto a patio with a dining table, surrounded by a garden.

Talk through the space you need

Call us to discuss the house, the extra space you want and how the extension could be planned.

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