Elevation Drawings: What They Are and How 3D Scanning Improves Them
Elevation drawings show the exterior faces of a building in a flat, scaled view — essential for design, permitting, and construction. This guide explains elevation drawing types and how 3D laser scanning produces more accurate elevations faster than traditional methods.
What Is an Elevation Drawing?
An elevation drawing is a scaled, two-dimensional representation of one side (face) of a building as seen from a direct, perpendicular viewpoint. Unlike perspective views that show depth and foreshortening, elevations show true proportions — every element appears at its actual height, width, and position relative to a datum (typically the finish floor level or site grade). Elevation drawings are one of the fundamental architectural drawing types, alongside floor plans, sections, and details. They communicate exterior design intent, material specifications, fenestration patterns, and dimensional relationships to contractors, building officials, and clients.
Types of Elevation Drawings
The four standard elevations correspond to the cardinal faces of a building: front (street-facing), rear, left side, and right side. These are typically labeled by compass direction (North Elevation, South Elevation, etc.) or by the building grid reference. Interior elevations show the walls of a specific room — commonly used for kitchens, bathrooms, and specialty spaces where wall-mounted elements need precise positioning. Section-elevations combine a building cross-section with an elevation view to show both interior and exterior relationships at the cut plane.
- Exterior elevations: Four cardinal faces showing facade design and materials
- Interior elevations: Room wall views for kitchens, bathrooms, millwork
- Section-elevations: Combined cross-section and elevation views
- Reflected ceiling plans: "Elevation" of the ceiling as viewed from below
How 3D Scanning Improves Elevation Drawings
Traditional elevation creation requires manual field measurements — tape, laser distance meters, and hand sketches — followed by hours of CAD drafting. This process is slow, labor-intensive, and prone to measurement errors, especially on buildings with complex facades, ornamental details, or irregular geometries. 3D laser scanning captures the entire building exterior in a dense point cloud that can be sectioned at any plane to produce perfectly scaled elevation views. The point cloud contains every surface detail at ±2-4mm accuracy, eliminating the need for return visits to capture missed measurements. Elevation drawings extracted from point cloud data are more accurate, more detailed, and produced in a fraction of the time.
Elevation Drawings from Point Clouds
To create elevation drawings from a 3D scan, the point cloud is sectioned (sliced) perpendicular to the building face at the desired elevation plane. The resulting 2D slice is then traced in CAD software to produce a clean architectural elevation drawing. Modern software can automate much of this process — extracting edge lines, window openings, and surface profiles directly from the point cloud. For renovation projects, this workflow delivers accurate existing-condition elevations without any manual field measurement.
When You Need Elevation Drawings
Elevation drawings are required for building permit applications (showing proposed exterior changes), historic preservation documentation (recording existing facade conditions), facade renovation design (documenting existing materials and proportions for restoration), condo building recertification (40-year and 25-year inspections in Florida), and real estate development (communicating design intent to investors and municipal reviewers).
Key Takeaways
Elevation drawings show a building face in true-scale 2D view
3D laser scanning captures all exterior detail at ±2-4mm accuracy
Point cloud-derived elevations are faster and more accurate than manual measurement
Required for permits, historic preservation, facade renovation, and building recertification
Four standard types: front, rear, left side, right side — plus interior elevations for rooms
Frequently Asked Questions
Can 3D scanning produce elevation drawings directly?
Not directly — the scan produces a 3D point cloud. Elevation drawings are then extracted from the point cloud by sectioning it at the appropriate planes. This extraction step can be done in software like Revit, AutoCAD, or specialized point cloud processing tools. The result is a much more accurate elevation than one drawn from manual measurements.
How much do elevation drawings from 3D scanning cost?
The scanning phase (capturing the building exterior) typically costs $2,000-$10,000 depending on building size and complexity. Elevation drawing production from the point cloud data adds $500-$2,000 per elevation. This is often cheaper than traditional hand-measurement methods for complex buildings and always faster.
Do I need elevation drawings for a building permit?
Most jurisdictions require elevation drawings for permits involving exterior changes — new construction, facade modifications, additions, and change-of-use projects. Check your local building department requirements. For interior-only renovations, elevations may not be required but are still valuable for contractor coordination.
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