Define what the rendering is claiming
A refurbishment image can look convincing while quietly erasing the distinction between what exists and what will be built. Before commissioning views, decide whether the purpose is design coordination, planning consultation, a conservation discussion or marketing. These audiences need different degrees of disclosure. A final-state perspective can show the intended outcome, but it cannot by itself prove that retained walls are sound, permissions have been granted or hidden defects have been resolved. Agree the purpose and approval status in the brief before anyone chooses a camera.
Establish a survey-led baseline
Collect the measured survey, existing-condition photographs, relevant point clouds, current plans and elevations, and the latest demolition and proposed drawings. Record survey dates and the areas not accessible during inspection. A model reconstructed from estate-agent photographs is not a measured baseline. Separate survey confidence from modelling precision: an apparently exact brick joint can still be based on an approximate facade. Identify discrepancies between survey and design documents before modelling details that depend on them.
Build a retained / removed / repaired / new register
Assign a simple status to each significant visible element: retained unchanged, retained and repaired, removed, newly introduced or unresolved. Record its drawing reference and revision. The distinction matters especially for window openings, roofs, chimneys, boundary walls, structural frames, historic joinery and landscape features. A replacement window that resembles the original is still a replacement. Use an explicit register rather than relying on the visualisation artist to infer design intent from colours or lineweights in a CAD export.
Do not silently remove inconvenient existing features
Existing service risers, extensions, boundary structures and neighbouring elements may be visually awkward, but they should not disappear from an existing-condition view. In proposed views, remove them only where the current demolition scope actually provides for removal. If demolition is subject to consent or structural investigation, record that qualification. For consultation material, a paired existing and proposed view often communicates the intervention better than a single immaculate future scene.
Treat historic fabric as evidence, not texture
In a heritage or adaptive-reuse project, distinguish documented surviving fabric from reconstructed or speculative detail. A weathered stone wall should not be digitally cleaned into an unsupported pristine finish. Conversely, don't portray proposed repair work as damage that will remain. Ask the architect or conservation specialist to identify what is confirmed, what is proposed and what awaits investigation. A visualisation cannot establish historical authenticity or replace a conservation statement.
Lock comparison viewpoints and framing
For before-and-after comparisons, keep the same camera position, height, focal length, crop and horizon wherever practical. Recheck any changes to the ground level or access route that could make an identical camera physically impossible. Keep weather, vegetation and exposure broadly comparable so the renovation is not made to look better solely through sunny lighting and a flattering lens. When a viewpoint has to change, disclose that the two images are not a direct matched comparison.
Protect the accuracy of surrounding context
An intervention is often judged in relation to the existing street, courtyard or landscape. Keep neighbouring buildings, parapet heights, roof profiles and relevant mature trees consistent with available evidence. Mark simplified context as approximate rather than inventing facade details. If a neighbouring extension is only proposed, don't depict it as already built without explanation. The camera-matching guide covers photo-based viewpoint alignment in more detail.
Separate construction stages from the finished proposal
A phased refurbishment may retain part of a facade while replacing the roof and internal structure. The finished-state image is not a safe proxy for what will be present during works. If the audience needs phasing, provide stage-specific views using an agreed construction sequence and labels. Do not infer temporary propping, site safety arrangements or occupation dates from the design model. For development projects with occupied phases, see the phased-development visualisation guide.
Fictional example: converting a small workshop
Fictional illustrative example, not an Atmosferi commission. Imagine a workshop conversion retaining a brick street facade, replacing three windows and removing a rear lean-to. A first render makes the brick uniformly new and omits the lean-to from the existing view. The design team corrects the existing image, labels the retained facade as subject to repair, and checks the proposed window openings against the latest elevation. The comparison then communicates the scope rather than just the atmosphere.
| Element | Status | Source to verify | Rendering decision |
|---|---|---|---|
| Street brickwork | Retained; repair proposed | Survey and repair schedule | Show credible existing variation; qualify proposed repair |
| Three windows | Replacement | Proposed elevation and schedule | Match opening sizes and frame divisions |
| Rear lean-to | Demolished in proposal | Demolition plan | Keep in existing view; remove only in proposed view |
| Hidden structure | Unverified | Further investigation pending | Avoid claims of structural feasibility |
Caption assumptions where viewers will see them
A caption should identify existing condition, proposed design or illustrative final appearance. Include the drawing revision or date when material, and state important unresolved assumptions. A tiny disclaimer buried elsewhere on a site is a poor substitute for a clear label beside a before-and-after pair. If a conservation approval, demolition consent or specialist survey is outstanding, do not imply it has been secured. Marketing imagery should remain consistent with the approved project description.
Keep a traceable approval package
Save the source drawing list, condition photographs, element-status register, model revision, camera IDs, material assumptions and final captions with each issued view. Name one person responsible for design sign-off and one for publishing the correct version. When a survey reveals unexpected fabric or a planning condition changes the intervention, identify every affected image and replace obsolete versions. The change-control guide explains how to manage revisions after images have circulated.
Existing-versus-proposed sign-off checklist
Before release, confirm the baseline survey and photographs are dated; retained, removed, repaired and new elements are recorded; uncertain areas are disclosed; the demolition scope matches the latest drawings; historic materials are not invented; viewpoints are genuinely comparable; neighbouring context is not quietly erased; captions identify the stage and status; and the design lead has approved the final exports. A rendering is a communication artefact, not evidence that a building survey, statutory approval or conservation assessment has been completed.