Commission a marketing render for a low-sensitivity site hoarding and a Type 3 or Type 4 photomontage for anything facing planning scrutiny or a prominent public view. The dividing line is purpose, not budget: decide before a single frame is modelled whether the image needs to persuade or needs to survive verification. The Landscape Institute’s technical guidance sets the classifications most UK planning authorities now expect studios to work within, and getting this one decision right at the outset saves weeks of rework later.

TL;DR:

  • Use Type 3 photomontages for marketing hoardings in non-sensitive areas unless the image will be reused as planning evidence, which requires Type 4 accuracy.
  • Provide precise camera location, lens, and viewpoint details, along with baseline survey materials, to ensure the CGI meets purpose-specific standards.
  • Verified views with confirmed survey data and documented methodology typically require three to five weeks for production, with delays mainly caused by incomplete survey information.
  • Files should be prepared at appropriate resolutions using an enlargement factor of about 150 percent, with layered TIFF or PSD files and a signed methodology note for planning-facing images.
  • Clear sign-offs on accuracy, color proofing, and file acceptance, combined with early survey data and defined review rounds, prevent costly late-stage revisions.
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Table of Contents

Types of visualisation and when each is right for a hoarding

The Landscape Institute’s framework runs from Type 1 (simple sketches or massing diagrams) through Type 4 (survey-verified, scale-accurate photomontage). For hoarding work, only two of these categories matter in practice.

Type 3 visualisations, often called photomontages or photowires, blend a 3D model into a real photograph with reasonable positional care but without full survey verification. Type 4 goes further: it demands quantifiable survey data, documented camera parameters and procedural transparency, making it suitable for planning applications and public-facing visuals where accuracy matters.

Which one you need depends on context, not preference:

  • Marketing-only hoardings away from sensitive sightlines, promoting a development with no live planning objections, usually work fine with a well-composed marketing render or Type 3 photomontage.
  • Prominent or contested views, listed building settings, or hoardings likely to be photographed and scrutinised by objectors need Type 4 rigour.
  • Anything reused as planning evidence later, even informally, should be built to Type 4 standard from the start rather than retrofitted.

Viewpoint accuracy and disclosed scale are what separate a picture that looks convincing from one that holds up under questioning. A gorgeous render with an invented camera angle is still just marketing, whatever the print size on the hoarding.

Commissioning checklist: what to include in a brief so the CGI is fit for purpose

A vague brief produces a vague image, and revisions cost more than getting the brief right the first time. Before you send anything to a studio, work through this checklist.

  1. State the purpose in one sentence. Say plainly whether the image is for marketing, planning submission, or both, and whether it might be reused as evidence later.
  2. Request a methodology statement if planning use is possible. For Type 4 work, this should declare locational accuracy and the enlargement factor on the presentation page itself.
  3. Give precise viewpoint instructions. Specify camera location (ideally with coordinates), lens or field of view, and camera height. Guidance on baseline photography recommends full-frame sensor cameras with 50mm prime lenses where the site allows it.
  4. Supply baseline materials up front. Topographic surveys, CAD or BIM models, elevations, and dated site photographs all shorten the modelling stage considerably.
  5. Define deliverables precisely. Confirm the print resolution required at the intended enlargement, file formats (layered and flattened), and colour profile expectations.
  6. Clarify usage rights. State whether the image can be reprinted, reused in brochures, or displayed on additional hoardings without further licensing.

Pro Tip: Agree the number of review rounds and what counts as a scope change before work starts. Two rounds of genuine feedback is normal; a third round that introduces a new viewpoint or a design change is a new job, and saying so upfront avoids awkward invoicing conversations later.

Studios that specialise in planning visuals will usually ask for most of this anyway, but arriving with it prepared moves the project into modelling days faster.

Production workflow, typical timelines and common causes of delay

A hoarding CGI project moves through six broad phases: briefing and data gathering, baseline photography or survey, modelling and texturing, test renders, review rounds, and final output with quality assurance.

A single hero image for a marketing hoarding typically takes one to two weeks from a complete brief, assuming survey data and CAD files arrive promptly. Verified views take longer, often three to five weeks, because survey control points, agreed camera positions, and documented methodology add genuine verification steps that can’t be rushed without compromising the output.

Several factors push timelines in either direction:

  • Missing or incomplete survey data is the single biggest cause of delay, since modelling can’t proceed accurately without it.
  • Late design changes from the architect ripple through every downstream stage, including test renders already approved.
  • Multiple stakeholders reviewing separately, rather than consolidating feedback, tends to add rounds rather than remove errors.
  • Clear baseline photography with known camera parameters can shave days off the modelling stage.

Mitigating this is mostly about sequencing: lock the design before commissioning the visual, nominate one person to consolidate feedback, and get survey data moving in parallel with the creative brief rather than after it.

Hoarding graphics are viewed at close range and at distance simultaneously, which makes file resolution a genuine technical question, not an afterthought. Technical guidance notes commonly reference enlargement factors such as 150% when converting a screen-resolution render into a print-ready file, and this figure should shape your pixel dimension calculations from the outset.

Close detail of printed architectural hoarding CGI

Statistic to remember: guidance recommends presenting verifiable panoramas at A1 width with cylindrical projection up to 90° horizontal field of view for wide views, a spec worth quoting directly to your printer.

Beyond enlargement, request:

  • RGB working files converted to CMYK only at the final print stage, with a physical printer proof requested before the full run.
  • Layered TIFF or PSD masters alongside a flattened, print-ready PDF with bleed and crop marks included.
  • A labelled methodology note attached to the file set whenever the image could face planning scrutiny, stating the declared enlargement factor on the page itself.

Quick brief template and final sign-off checklist

For a marketing hoarding, a workable purpose statement reads: “This image promotes the completed scheme to passers-by and prospective buyers; it will not be submitted as planning evidence.” For planning-grade work: “This image forms part of the planning submission and must meet Type 4 verification standards, including declared camera position and enlargement factor.”

  1. Attach the essentials. Topographic survey, site photography with camera data, architectural drawings or BIM model, and any existing planning correspondence.
  2. Add a usage clause. Something as simple as “usage rights cover print on site hoardings and reuse in marketing materials without expiry” avoids disputes later.
  3. Confirm three sign-offs before printing: accuracy sign-off (where verification applies), colour proof approval, and final file acceptance from whoever owns the print run.

Studio perspective: practical commissioning lessons from Visual Trick

The most expensive mistake is not a bad render, it’s a late decision about purpose. Studios lose days remodelling a marketing image into a planning-grade one because nobody flagged the reuse risk at the brief stage.

The second lesson is about legibility, not detail. A hoarding photomontage viewed from a pavement doesn’t need every brick rendered; it needs correct massing, honest proportions and clean composition that reads at fifteen metres, which is a different skill from chasing photorealism for its own sake. Studios producing exterior CGI for hoardings learn to prioritise that legibility deliberately.

— Paride

Starting a hoarding CGI project with Visual Trick

A studio produces hoarding-ready imagery in-house, from marketing renders through to photomontage and verified views, with one experienced operator handling the project rather than work passing between outsourced hands. That means a single point of contact for every review round and a delivery date you can actually rely on when a hoarding installer is waiting on final files.

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Before getting in touch, gather what a studio will ask for anyway: a site survey or topographic data, existing drawings or a BIM model, dated site photography, and a one-line statement of purpose (marketing, planning, or both). An initial quote should confirm the number of review rounds included, expected turnaround for your image count, and file specifications matched to your hoarding dimensions. Visit the architectural visualisation services page to see the full range on offer, or head straight to the planning visuals page if verified accuracy is the priority, and request a quote with your site pack attached.

Sources

Consult the Landscape Institute’s technical guidance and RBMP’s verified views methodology before finalising any planning-grade brief.

FAQ

What is CGI for site hoardings?

It refers to photorealistic architectural visualisation produced specifically to be printed at large scale on construction site hoardings, ranging from marketing renders to survey-verified photomontages. The right type depends entirely on whether the image needs to persuade an audience or withstand planning scrutiny.

What’s the difference between a marketing render and a verified view?

A marketing render prioritises visual appeal and can take creative liberties with viewpoint and lighting, while a verified view uses survey control points, agreed camera positions and documented methodology to produce a scale-accurate, defensible image. Verified views are built for planning submissions and public inquiries, not brochures.

Do I need Type 4 verification for every hoarding?

No. Type 4 is only necessary where the visual faces planning scrutiny, sits on a prominent public view, or might later serve as evidence. A straightforward marketing hoarding away from sensitive sightlines rarely needs full verification.

How long does a verified view take to produce?

Verified views typically take three to five weeks from a complete brief, longer than a standard marketing render, because of the added survey and methodology steps. Missing survey data is the most common cause of delays beyond that window.

What resolution do I need for a large hoarding print?

Resolution depends on your enlargement factor and hoarding size; technical guidance commonly references 150% enlargement as a benchmark for converting screen renders to print files. Always request the file at the correct pixel dimensions for your specific print size rather than assuming a standard export will scale cleanly.

How much does CGI for site hoardings cost?

Pricing depends on image complexity, whether verification is required, and how many viewpoints you need, so current project pricing is available directly from Visual Trick’s services page. Marketing renders generally cost less than verified views, given the additional survey and documentation work the latter demands.