3D Interior Rendering for Interior Designers and Developers

Interior CGIs for interior designers

Interior designers are the people we render for most often after developers, and their reason is different. A developer needs an image that sells; a designer needs an image that settles an argument before money is spent. Is the green joinery too dark against a north-facing window? Will the client accept a ribbed glass screen once they see it at full size? Does the bouclé armchair read as warm or as fussy beside the limestone? A photoreal image answers those questions in a meeting, where a sample board and a sketch leave room for doubt.

Designers use our renders at three points in a job. Early, a single hero view of the main space wins the commission or confirms the direction. Mid-way, two or three views of the rooms carrying the budget, usually the kitchen, the principal bedroom and a bathroom, secure sign-off on the expensive decisions. Late, the same images go into the presentation pack and the designer's own portfolio while the real room is still being built.

Kitchen and bathroom brands commissioning images of a product range, rather than a single client's home, work to a different brief, which is set out on our kitchen CGIs page.

Working from your FF&E schedule

The furniture, fixtures and equipment schedule is the backbone of an accurate interior. We read it line by line: each sofa, lamp, rug, curtain fabric and piece of art is placed at its listed dimensions, in its listed finish, in the position your plan shows. Where a manufacturer publishes a 3D file we start from it and check it against the spec sheet; where none exists we model the piece from product photographs and dimensions.

Bespoke items, such as a banquette, a built-in bookcase or a bar unit, are modelled from your joinery drawings. If a line in the schedule is still undecided, we place a clearly agreed stand-in and flag it in the draft so nobody mistakes a placeholder for the final choice.

• Loose furniture is modelled to the schedule's dimensions and finishes.
• Bespoke joinery is built from your shop or design drawings.
• Light fittings are placed from the reflected ceiling plan.
• Undecided items appear as agreed stand-ins and are flagged on the draft.

Material sampling and matching finishes

A render only helps a decision if the materials in it are the materials on the board. For paint we work from the manufacturer's colour reference rather than a screenshot, because screen colour drifts. For timber we need species, cut and finish, since rift-sawn oak with a hardwax oil and crown-cut oak with a lacquer are different floors. For stone and tiles we want the format, the joint width and grout colour, and a high-resolution image of a real slab or batch so veining and variation sit at the right scale.

Where a sample exists only as a physical piece in your studio, photograph it in daylight next to a sheet of plain white paper and send the photo; the white sheet lets us correct the colour cast of the room it was shot in. Fabrics need the supplier code plus a close-up showing weave and sheen. Getting these inputs right at the start is far quicker than correcting a material across three revision rounds.

Daylight and evening lighting scenarios

Lighting decides whether an interior feels lived in. We set the building's real orientation and place the sun for a chosen date and time, so a west-facing living room glows in the evening and a north-facing kitchen keeps its even, cool light. British daylight is often soft and overcast, and some schemes look truer under a bright cloudy sky than under hard sunshine, so we will suggest which suits the room.

Season matters as well. A low winter sun reaches deep into a room and picks out texture on a plaster wall, while a high summer sun barely clears the window head. If the client will mostly use the space on winter evenings, or the flat is launching in spring, we light it for that moment.

Camera heights and composition

Most interior images that feel wrong do so for a reason nobody can name: the camera is too high, too wide or tilted. We shoot standing views from around eye height and seated views lower, at roughly the height of someone on the sofa, which is the viewpoint a client instinctively trusts. Vertical lines stay vertical, and we keep the lens moderate so a modest bedroom is not stretched into a ballroom that will disappoint at handover.

Each room normally gets one hero view that explains the whole space, and optional detail views, such as a vanity, a reading corner or a run of joinery, that sell the craftsmanship. We compose with every likely use in mind: a landscape frame for the presentation deck, a portrait crop for social media, and enough headroom around the subject for a brochure designer to lay text over the image.

If you already know where the image will be used, tell us at the briefing stage. A camera chosen for a square social post sits differently from one chosen for a full-bleed double-page spread, and planning that up front avoids cropping away the very detail the image was meant to show.

Colour-scheme variants for off-plan apartment ranges

Developers and build-to-rent operators usually market a building through a handful of flat types, from a studio to a three-bedroom penthouse, and offer each in two or three specification palettes. Buyers choose their palette at reservation, so they need to see each one honestly. We model every flat type once, fix the camera and lighting, and produce each palette as a variant of that view; the furniture and composition never move, which lets a buyer compare like with like.

The same models feed the marketing suite screens, the sales brochure and the portal listing, so the interiors stay consistent from first launch to final release. Show home teams use them too: when the show home is dressed in one palette, the renders let the sales adviser show the other two without a second fit-out. Whole-building packages that also need exteriors, lobbies and floor plans sit under our property CGIs service. Once flats are complete but still empty, virtual staging of photographs takes over from rendered interiors for the lettings and resale stage.

How interior designers brief us

Designers rarely brief in drawings alone, and we do not expect them to. Mood boards, Pinterest boards, saved Instagram posts and links to supplier product pages are all useful, provided we know what each reference is for. A note such as 'lighting mood from image 3, styling density from image 7, ignore the colour in both' saves a whole revision round.

We treat references as direction, not as something to copy. The finished interior is built from your scheme, at your room's real proportions, and styled to the client you are presenting to: a family that wants warmth, a landlord who wants durability, or a buyer who wants a hotel feel. If you are briefing a render for the first time, our briefing guide lists what to gather and how to annotate it.

Styling is part of the brief, too. Tell us how lived-in the room should feel: a show-ready interior with a few carefully placed objects, or a home with books on the shelves, a throw over the chair and fruit on the worktop. Both are valid, but they suit different audiences.

What to send for an interior render

The more of the specification arrives with the enquiry, the faster the quote and the closer the first draft. DWG, PDF, Revit, ArchiCAD and SketchUp files are all fine, and hand-measured sketches work for small refurbishments.

Nothing on this list has to be perfect before you get in touch. A plan and a rough idea of the finishes are enough for a fixed quote; the rest can follow before modelling starts, and we will tell you exactly which gaps matter for the views you have chosen.

• Floor plans with the furniture layout, and the elevations or sections of each room.
• The finishes schedule with paint, flooring, tile and stone references.
• The FF&E schedule with supplier links or spec sheets.
• A reflected ceiling plan and lighting schedule, if you have them.
• Joinery drawings for kitchens, wardrobes and built-in furniture.
• Photographs of the existing room for refurbishment projects.
• Mood boards or reference images, each annotated with what it is for.

Revisions etiquette: getting the most from four rounds

Up to 4 revision rounds are included on every image, and the projects that finish fastest treat each round as a single, consolidated set of mark-ups. Collect comments from the whole client team, resolve any disagreements between them, and send one annotated PDF or screenshot per round. Comments that arrive in four separate emails over two days tend to contradict each other, and the draft cycle stalls.

It also helps to separate corrections from design changes. A wrong tile size or a lamp in the wrong finish is a correction and sits squarely inside the revision rounds. Moving a wall, re-planning the kitchen or swapping the whole palette after the draft is a change of design; we will tell you before starting if it affects the quote or the date, so there are no surprises at invoice. Finally, sign off each view clearly once it is right; a written 'approved' on the last draft is what triggers the 4K final, and it stops a finished image being reopened by a late comment from someone who missed the earlier rounds. Looking for prices? Every rate, variant and package is set out on our 3D rendering cost in the UK page.