Old factories often have an architectural character that is difficult to recreate in new buildings. Brick facades, large windows, exposed structures, high ceilings, and simple industrial forms can all become valuable parts of a renovation. Years of use may also leave these buildings with damaged surfaces, outdated openings, inconsistent materials, and neglected surroundings.

The design challenge is to decide what should be preserved, what should change, and how new elements can work with the building’s industrial character. AI rendering can help architects and designers visualize and compare renovation ideas before every detail has been finalized.

In this design study, we look at how GstarRender’s “Explore”, “Repaint”, “Smart Edit”, and “Atmosphere Transfer” tools can support different stages of an old factory renovation concept.

1. Start with What Makes the Building Recognizable

A successful renovation does not always begin by removing everything old. Brick or concrete facades, repetitive industrial windows, exposed structural elements, original roof forms, large spans, and strong building proportions may all be worth retaining.

For example, an aging brick facade might be repaired and cleaned instead of covered. Existing structural elements could remain visible, while selected windows and entrances are reconsidered for the building’s proposed use. These are design ideas to evaluate alongside the project’s structural, regulatory, and technical requirements.

The first step is to identify the features that give the factory its identity and use them as a starting point for new concepts.

Figure 1. Original factory building before renovation.

2. Explore Different Renovation Directions

Once the building’s defining features are clear, designers can ask what it might become. One concept could emphasize brick, steel, and exposed concrete. Another could introduce timber, larger areas of glazing, and softer landscaping. A third could use neutral materials and simpler facade details.

“Explore” can generate design renderings from a base image, such as an early model, sketch, or image of the existing building, together with prompts and design references. Designers can use it to compare visual directions while using the base image as the starting framework for the building’s form and viewpoint. Explore V2 uses a style reference and prompt; Explore V3 can draw selected design elements from multiple references.

At this stage, the generated images are options for discussion, not final construction proposals. Compare how each direction treats the original building’s proportions, materials, and industrial character, and check any generated changes against the actual site.

Figure 2. Renovation concepts generated with “Explore”.

3. Refine the Facade, Windows, and Entrances

The facade is often where the transformation becomes most visible. Older factories may have faded surfaces, damaged masonry, inconsistent repairs, and doors or windows that no longer suit the proposed use.

A concept might retain the rhythm of the original openings while testing new window frames, a clearer entrance, or a canopy. “Repaint” is suitable for testing these changes within a marked area of an image. The designer masks the area to be revised and describes the desired result in a prompt, with an optional reference image. This makes it useful for comparing local facade alternatives without asking the tool to redesign the entire image.

When the intended change can be described directly, “Smart Edit” offers another way to iterate using natural-language instructions. A prompt can name both the change and the elements to preserve, such as the building massing, viewpoint, and existing brick. Because generated images can alter more than requested, the result should be compared carefully with the source image.

Figure 3. Entrance area marked for editing with “Repaint”.

4. Coordinate Materials and the Surrounding Site

Once the main facade layout is established, the next question is how its existing and new surfaces work together. Weathered brick can be paired with glass, existing concrete with warmer timber, and restrained metal details with the original structure. Together, these choices establish a material palette for the building and its immediate setting.

Review the palette across the full view rather than on one facade patch. Compare how brick, glazing, paving, and planting relate in color and texture, especially where the building meets the yard. Check that the proposed finishes remain consistent across images and suit the existing structure.

The surrounding site needs its own design decisions. Former loading yards and paved areas can be visualized with pedestrian routes, planting, seating, and signage. “Universal Insertion” can place a referenced element, such as a bench or planter, into a selected area; “Object Removal” can clear an unwanted object from the visualization. Dimensions, access, drainage, and other site constraints still need to be checked against the actual site.

5. Explore Lighting and Atmosphere

The same building can feel very different in daylight, at sunset, or at night. Daylight may reveal the texture of brick and concrete; warmer evening light can change how the entrance and outdoor space are perceived; night lighting can help communicate a different presentation mood.

“Atmosphere Transfer”, under “Scene Transformation”, is the tool for exploring changes in weather, season, time of day, and lighting in an existing design image. Designers can compare atmospheric treatments while aiming to keep the underlying design consistent. It is best used after the main renovation concept has been chosen, followed by a check that the generated image still represents the intended building, materials, and surroundings.

Figure 4. Daytime renovation concept (left) and rainy evening variation created with “Atmosphere Transfer” (right).

From an Aging Factory to a New Architectural Vision

An old industrial building’s materials, proportions, and history can provide a strong foundation for a contemporary reuse concept. The design process can start by identifying what gives the building character, then testing changes to its facade, materials, site, and visual presentation.

GstarRender supports those visual studies at different stages: “Explore” for comparing directions, “Repaint” and “Smart Edit” for design changes, and “Atmosphere Transfer” for lighting and mood studies. The images can help teams discuss and communicate possibilities, while design decisions and technical feasibility remain matters for the project team to verify.

Ready to explore a renovation concept? Try GstarRender to visualize and compare directions for your next architectural project.

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