How Can I See What My House Will Look Like with an Extension?

How can I see what my house will look like with an extension? The clearest way to see your proposed extension before construction begins is to commission a 3D CGI visualisation from an architectural visualisation studio. The studio takes your architect's drawings, RIBA Stage 2 or Stage 3 design information, and produces photoreal exterior images showing the extension in its surrounding context, including accurate materials, shadows, and neighbouring buildings.

For a simpler preview, some architects use SketchUp or Revit models during design development, but these are working tools rather than presentation quality. A CGI produced for planning or client approval is the standard for UK householder projects and covers single-storey rear extensions, side-return extensions, two-storey additions, and wrap-around schemes alike. Expect to see exact brickwork, window frames, and roof materials represented accurately in the final image.

For house extension visualisation services, a studio typically works from your PDF drawings and returns photoreal images within five to ten working days. The process does not require a site visit in most cases. Where a planning application requires a verified view (a CGI composited onto a surveyed photograph with a matched camera position), the studio will need co-ordinates from a topographic survey. For standard permitted development or householder applications, a clear exterior render from one or two agreed viewpoints is sufficient for the local planning authority and for client sign-off.

Some homeowners use online tools or apps that apply filters to photographs of their existing house. These tools produce a rough impression but are not accurate enough for planning submissions or for comparing design options at the detail level. If you are trying to decide between extension types, such as a rear-only versus a wrap-around, a set of two or three CGIs from a dedicated studio gives you a like-for-like comparison that photographs and sketches cannot.