Why 3D Exterior Rendering matter: stunning architectural visuals tips

With the advancement of technologies, expressing one’s design ideas and communicating them effectively has become much simpler. In today’s design world, integrating the presentation with striking renders has enormous advantages, not only for designers but also for clients.

In recent years, architectural renders accompany any type of project to make the presentation more effective and highlight the characteristics of the project itself. To create photorealistic images of an architectural project, generally 4 types of rendering are used; among these, today in this article we will see together all the advantages and nuances of 3D exterior rendering.

What is a 3D exterior rendering?

3D exterior rendering is the process of creating realistic and visually impactful 3D images that reproduce external design spaces, highlighting the architecture itself and the surroundings of the buildings, green spaces, and surrounding infrastructures.

3D Exterior Rendering | Image produced with Edificius

Whether it concerns residential buildings or public-use buildings, the representation of the surroundings in which the project is inserted, and thus its environmental context, is of fundamental importance to fully understand and interpret the design idea and to be aware of its environmental impact.

Indeed, 3D exterior design is the most objective way to help designers, buyers, or clients to contextualize the project and to imagine it as if they had it physically in front of their eyes.

It is also clear how the photorealistic architectural rendering of the entire project perfectly inserted in its context helps designers to avoid mistakes while simultaneously communicating clearly and effectively with clients, avoiding misunderstandings and therefore subsequent corrections during the construction phase that would lead to a loss in terms of time and costs.

The main advantages of 3D Exterior Architectural Rendering?

3D Exterior Architectural Rendering helps bring projects and ideas to life. Exterior architectural renders, in fact, give clients the opportunity to see their projects in a new and realistic way and to have a precise idea of how the constructed work will look when inserted into its surroundings.

The advantages of using 3D Exterior Architectural Rendering are many; let’s list some as they:

• increase real estate sales;
• improve visual realism and project presentation;
• speed up the design process and error correction;
• provide a clear view of the design from an external perspective;
• increase design accuracy by ensuring more customization options;
• make communication more efficient: a photorealistic view is capable of perfectly simulating a building and is much more understandable than any construction detail or graphic board;
• enhance client engagement by accelerating their approval process;
• facilitate collaboration and file sharing;
• simplify integration with AR, VR, and AI;
• help various stakeholders to be aware of the proposed developments in their real and final environment.

7 tips for achieving photorealistic 3D exterior renderings

The more the 3D exterior render resembles reality, the better it will fulfill its task of simulating the project’s insertion into its future environmental context.

Let’s see the 7 most effective ways to achieve the most photorealistic results from 3D exterior rendering:

1. Construction of a high-quality 3D model Just like with everything, to achieve a quality result, it is necessary that all phases and the material from which one starts are of high quality. In this case, therefore, rendering from well-made 3D models is one of the prerequisites for obtaining high-quality renders.
2. Respect for proportions For a scene and a shot to be realistic, respecting proportions is fundamental. Therefore, when preparing an exterior rendering, it will be essential to understand the project well, proportion the various elements of the same concept with each other and with the environment in which they are inserted. A poorly proportioned render not only fails to fulfill its task well but also deviates from the correct interpretation of the project’s environmental impact.
3. Correct setting of vertical and horizontal axes To create a truly photorealistic exterior render, the professional in charge of rendering will need to correctly set the vertical and horizontal axes to align the model. The axes, especially the horizontal one, are the starting point of the render composition, and if poorly set, they will cause distortion of perspective and a “floating” effect of the various elements of the project.
4. Perfect application of textures and materials Clearly, applying textures of quality and correctly is fundamental for the render to appear as realistic as possible. At this stage, attention must be paid to two factors; namely the high quality and resolution of the textures and the correspondence between material properties and the appearance of the applied textures. For example, if the selected material for an object is metal, the texture must imitate its properties in terms of glossiness, opacity, reflection, refraction, etc.
5. Creation of a realistic and evocative background Since these are exterior renders, the treatment of outdoor environments is very important to the professionals who deal with 3D exterior rendering. 3D artists create different environments for the same project to visualize it at various times of the day and in different seasons of the year. Depending on the subject of the rendering, it may be more or less interesting and evocative to visualize it during the day or at night, with snow or with sunshine.
6. Realistic and organic rendering of lighting To produce coherent and highly photorealistic images, it is crucial to reproduce the lighting realistically. This means considering all light sources and everything that interacts with them, modifying their effect in some way (reflective materials, fog, rain, smog, etc.).
7. Rendering the best angles To do justice to a project and create a suggestive and engaging render, the choice and setting of the angle is an extremely important factor.

7 ways to achieve a photorealistic rendering

The importance of proportions and environmental context in 3D renderings

To develop an attractive and evocative rendering of a project, modelers must be truly skilled in all aspects of external environment design: public or private spaces, parks, campuses, residential complexes, streets, everything must be created to real scale to ensure the maintenance of proportions between context and work and to achieve realistic renderings.
The insertion of a new building into existing environments not only gives a realistic effect to the entire area in the 3D rendering, allowing the context of a large city and the surroundings of the property to be shown, but it also allows for understanding whether the structure to be built fits into the context in which it will be inserted and to grasp the extent of the impact it will have on the surrounding environment.
In reality, there are several ways to represent the environmental context within a 3D rendering:

1. 1. detailed external environment, although it is very resource-intensive to realistically model the entire context, this type of rendering brings to life a realistic view of the context, merging what is built with what will be created;
   2. less detailed external environment, highlights the new construction, sharply differentiating it from the surrounding environment. This effect is achieved by modeling the work as if it were real, with photorealistic textures and creating the surrounding environment as if it were a white 3D model, that is, without textures on the surfaces;
   3. external environment obtained from drone flight, from the point cloud, it is possible to obtain models with mesh and textures and import them into 3D building design software. Here it will be possible to model our building in scale directly within a textured and georeferenced three-dimensional environment.

How to choose the best PBR materials and textures for exterior renderings

PBR textures, “Physically Based Rendering”, provide a more accurate representation of how light interacts with the properties of materials and for this reason have become the most used for creating realistic and immersive 3D environments.
With the use of PBR textures, it is much easier to create images that look like photographs, settings with a realistic appearance with materials represented and illuminated as if they were real.
Choosing the right PBR materials is essential to achieve the desired level of realism in your projects, but how do you choose the best textures for your renderings?
The BIM object library, for example, provides a large database of realistic and high-resolution textures and materials suitable for various architectural and design projects. After downloading, you just need to upload it into the software and assign it directly to the object.
Materials will be associated with a series of properties such as roughness, opacity, refraction, emissivity, essential parameters for creating a realistic appearance.
Therefore, evaluate the characteristics of the material, adjust the properties of the maps, consider all the various environmental effects, and ensure that all parameters are set correctly to achieve the best results.

How Lighting Affects the Quality of 3D Exterior Renderings

In creating a 3D exterior rendering, lighting has a significant influence on the rendering’s outcome and its realism.
Lighting is the key element in defining the atmosphere of a scene:

• enhances textures;
• shapes the perception of space;
• highlights forms;
• casts shadows;
• improves the perception of space and materiality.

Proper lighting can evoke emotions and guide the observer’s attention to areas of interest.
Dynamic lighting techniques, such as global illumination, ray tracing, HDR lighting, and IBL lighting replicate how light interacts with objects and environments in the real world. These techniques start from the color, intensity, and direction of light sources, then focus on how light bounces off surfaces and diffuses through materials to create realistic scenes.

Loading an IBL background | Edificius
The synergy between lighting and texture plays a fundamental role in bringing spaces to life:

• light best highlights surfaces and textures, revealing their intrinsic properties and the nuances of the material;
• textures influence the behavior of light, reflecting, absorbing, or scattering it, thus contributing to the overall atmosphere of the scene.

If you are interested in these topics, I recommend exploring them by taking a look at the article “Rendering: definition, types, and visualization techniques”.

Who is 3D Exterior Visualization useful for?

We can confidently say that exterior rendering visualization is useful for anyone involved in the AEC sector: from the designer to the end client, passing through all the professional figures involved in the realization and management of the work.
Let’s see together how and to what extent 3D exterior renderings are useful to the various figures involved:

• Designers: with exterior renderings, designers can modify the drawings as the project evolves and as the client expresses doubts and desires for change. 3D exterior renderings allow clients to visualize the work from various angles, at different times of the day, and in various seasons to fully understand the project, all before the construction site has even started.
• Real estate agents: in the real estate sector, 3D exterior rendering plays a crucial role in advertising. Exterior renderings allow real estate agents to present the project in an engaging and evocative way to their clients, who will have the opportunity to fully grasp the idea being proposed.
• Large companies: large companies involved in the construction and sale of properties use 3D rendering services for their presentations. High-quality and highly photorealistic renderings represent the best way to captivate potential investors who will be able to easily evaluate the future project, leaving no room for doubts or reflections.
• Builders: it is easy to understand how exterior renderings serve as a clear and immediate reference for builders who are responsible for realizing the project just as visualized in the rendering.
• Buyers: when entrusting a professional with the design of their home, it is not always straightforward to convey their desires, needs, and tastes in terms of aesthetics and functionality. 3D exterior renderings, allowing for immediate feedback, give buyers the opportunity to express their needs and preferences and request concrete and specific changes quickly and intuitively.
• Citizens: if in the field of private construction 3D exterior renderings are useful to the buyer, in the field of public construction (for example, in the case of building a shopping center, a sports complex, etc.) citizens will have the opportunity to see how the future work will fit into and impact the environment they already use, appreciating its advantages and any disadvantages.

Exterior rendering | Edificius

Why 3D exterior renderings are essential for real estate presentations

In the increasingly competitive real estate sector, 3D rendering is a game changer: the creation of realistic 3D models of properties and buildings helps in real estate presentations to visualize ideas and improve communications and marketing.

3D renderings are essential for the real estate sector because they bring a series of benefits:

• improved marketing, high-quality renderings bring to life spectacular images and videos that enhance real estate listings and advertisements. Integrating them into websites, social media, and virtual tours attracts much more attention, distinguishing the agency, which will acquire greater professionalism in the eyes of potential buyers;
• enhanced visualization, if the renderings bring to life realistic images that show how a work will look once built, detailing features and finishes, customers will see in advance how the property will appear once the work is completed. They will have a more informed idea of the spaces and divisions compared to what can be perceived from photos or floor plans;
• improved customer engagement, with images and videos it is possible to create true virtual tours and interactive experiences through AI-generated renderings. Customers will be able to explore properties, visualize spaces and details, increasing their engagement with the property and enhancing their interest.

Using 3D exterior renderings to improve client communication

3D exterior renderings provide clients with a clear visual representation of the project with which they can immediately and easily understand proportions, scale, and spatial relationships.

A well-executed 3D visualization engages clients effectively, able to convey all the nuances of a project, focusing on colors, materials, lights, and shadows.

If communication with clients is better, the decision-making process is certainly facilitated and consequently, customer satisfaction itself.

The impact of 3D exterior renderings on building design and construction

The impact and role of 3D renderings for exteriors in the sector has significantly evolved over time, becoming an indispensable part of the architectural process. As technology advances, the capabilities and impacts of 3D external visualization continue to expand, offering profound benefits in various phases of architectural development.

3D external visualization serves as a bridge between conceptual ideas and tangible structures. By creating detailed and accurate renderings, architects can visualize the complete external design of a building before the physical construction begins, allowing for modifications in the design phase and reducing costs and resource waste during the execution phase.

Additionally, a single rendering undoubtedly serves to help the architect communicate with the client, facilitating a better understanding and accommodating any requests for modifications.

Behind the realization of a rendering, however, there is an accurate and precise 3D model that contains multiple pieces of project information and remains available to all professionals involved in the design process and throughout the lifecycle of the asset.

With the right software, it will also be much easier to translate your design ideas into appealing renderings. For this reason, we recommend trying the 30-day free trial of the 3D architectural software that integrates 3D architectural design with rendering and other useful features to express your design ideas and communicate them effectively to your clients!