Last Updated on September 17, 2026
No piece of software makes you an interior designer, and the most expensive suite is rarely the one a small UK studio needs. The useful question is not “what is the best software”. It is “what do I actually need to pay for at my stage, and what can wait”. Here is the honest version, with 2026 prices.
Prices below are the vendors’ own list figures, taken from their pricing pages on 17 September 2026. Most are quoted in US dollars and exclude tax. In the UK you will usually pay in pounds through a reseller, and VAT is added on top, so treat these as the shape of the cost, not the penny.
The mistake: buying the whole studio on day one
The common error is to sign up for a full all-in-one platform before there is enough work to fill it. You end up paying a monthly fee for rendering credits and team seats you do not use. Software should follow the work, not lead it. Match the tool to the stage.
Start: draw and show
At the start you need to model a room and put a convincing picture in front of a client. That is drawing and visuals, nothing more.
- SketchUp Go is around $129 a year and runs on iPad and web. It gives you 3D modelling, a library of furnishings and materials, and cloud storage. It is enough to design and share a room.
- SketchUp Pro is around $399 a year and adds the desktop application, 2D documentation through LayOut, and access to more than a thousand extensions. This is the version most working designers settle on, because the documentation is what a builder needs.
Build: render without a render farm
When you are pitching more and want photoreal images without learning a separate rendering engine, an all-in-one tool earns its fee.
- Foyr Neo starts at roughly $33 a month and bundles modelling, a large product catalogue and built-in rendering measured in credits, so you are not buying a separate visualiser. There is a 14-day free trial, which is the right way to test whether the credit model fits how much you render. Its higher tiers add users, walkthroughs and floor-plan exports.
- SketchUp Studio, around $859 a year on Windows, adds high-quality photoreal rendering, a Revit importer and point-cloud work. Worth it only if rendering and survey data are a real part of your service.
Scale: run the business, not just the drawing
Past a certain point the bottleneck stops being the drawing and becomes the admin: specifications, purchase orders, client approvals and budgets. That is a different category of tool, built for studio management rather than modelling, such as Programa. These are priced per studio and most offer a free trial of about two weeks, so trial before you commit a monthly fee, and only when the paperwork is genuinely costing you billable hours.
What to actually do
Start on SketchUp Go or Pro and nothing else. Add a rendering tool with a free trial only when a specific pitch needs the images. Add studio-management software last, when admin is eating your week. That order keeps your software bill matched to your income, which is the whole point.
One thing software will never buy you is how a client finds and checks you before the first call. The free Whito Visibility Check shows how your studio reads to a search engine and an AI assistant, with no email required, and our guide on how UK interior designers actually get clients covers the part no tool does for you.
Sources
- SketchUp by Trimble, “Plans and Pricing” (sketchup.trimble.com), read 17 September 2026.
- Foyr, “Pricing” (foyr.com/pricing), read 17 September 2026.
- Waysheet, “Programa Pricing: Guide for Interior Designers 2026”, read 17 September 2026, for Programa’s plan structure and free trial.
By Jacob Whitmore, Whito Research. Last checked 17 September 2026. Whito takes no commission on the tools named here.
