An elevation drawing is a scaled, flat view of one vertical face of a building, drawn in orthographic projection so nothing shrinks with distance. It records heights, materials, window and door positions, roof pitch and the ground line at true measurement, which makes it the drawing a builder checks a facade against.
Ask a first year student to draw the outside of a house and you usually get something caught between a photograph and a diagram. An elevation is the opposite instinct. It flattens the building on purpose, and that flatness is what gives it authority: every height can be scaled off the paper.
How Orthographic Projection Makes an Elevation Work
Picture the building inside a glass box. Stand square to one pane and project every point of the facade back onto the glass along parallel lines. Nothing converges and nothing foreshortens, and the pane you unfold is the elevation. MIT's open drawing handbook uses the same glass box description of orthographic projection, because the idea carries across every discipline that measures from drawings.
The consequence is worth stating plainly: an elevation holds no measurable depth. A porch projecting two metres draws in the same plane as the wall behind it, and a recessed window sits where a flush one would. Everything perpendicular to your viewing direction survives; everything parallel to it collapses. Depth returns through convention instead, which means line weight, shadow and notes.
How Elevations Are Named on a Drawing Set
Two naming systems exist and both are defensible. Compass naming labels each drawing by the direction the wall faces, so the north elevation shows the face looking north. Relational naming calls them front, rear, left and right, keyed to the street.
Compass naming wins in professional sets because it survives rotation, and a reviewer studying solar gain knows which facade takes afternoon sun. The confusion is about direction: the north elevation is what you see looking south at the north-facing wall. Read the label as the wall's orientation, never the viewer's. Relational naming still suits small residential jobs and competition boards. Pick one and stay consistent.
💡 Pro Tip
Put a small key plan in the corner of each elevation sheet with the drawn face highlighted. It stops the most common site question about elevation sets, which is simply "which wall is this?" Where no facade faces true north, name by the nearest cardinal direction and note it.
What an Elevation Drawing Shows
An elevation is a height document first, so everything on it either states a vertical dimension or supports one. A working exterior elevation carries:
- The ground line, plus original and finished grade where they differ
- Level markers for floor levels, sill and head heights, eaves and ridge
- Openings in true width and height, with swing and glazing notes
- Material indication as texture or hatch, with leader notes naming the product
- Roof pitch as a ratio or angle, plus parapet, gutter or fascia profiles
- Visible services: vents, flues, downpipes and meter boxes
- Neighbouring buildings or the boundary, in a lighter weight
Openings consume the most drafting time, which is why many offices work from a standard symbol library; our CAD blocks collection covers the elevation-facing components most residential sets need. Material notation follows the same economy. Brick coursing drawn across a whole facade at 1:100 becomes grey mush, so draw a patch near a corner and let a note carry the specification.
Elevation vs Floor Plan: What Each Drawing Answers
The clearest way to hold the two apart is by cut and direction. A floor plan is a horizontal cut looking down, usually taken about 1.2 metres above the finished floor so it catches doors and windows. An elevation is not a cut at all, but a view looking horizontally at an uncut face.
Elevation and Floor Plan Compared
| Aspect | Elevation Drawing | Floor Plan |
|---|---|---|
| Viewing direction | Horizontal, square to one face | Vertical, looking down |
| Cut through building | None, the face is seen whole | Yes, a horizontal slice |
| Dimensions it proves | Heights and vertical alignment | Widths, depths, room areas |
| Questions answered | How tall, what finish, what pitch | How big, how arranged |
| Main audience use | Planning review, cladding, joinery | Layout approval, setting out |
| Depth information | Implied by weight and shadow | Measured on the sheet |
The two check each other. If a window head sits at 2100 in the elevation but the plan shows the wall stopping short of that opening, one is wrong.
Creating Depth With Line Weight and Shadow
Since projection strips depth out, drafting convention puts it back on a distance rule. Elements nearest the viewer take the heaviest line and lines lighten as surfaces recede: a projecting porch strongest, the main wall a step lighter, a recessed balcony lighter again, context faintest. The same hierarchy governs plans and sections, covered in our guide to line weight in architectural drawing.
📐 Technical Note
Line types and drafting rules are set internationally by ISO 128-2:2022, Basic conventions for lines, which defines line designations, configurations and leader line rules, with annexes for construction drawings. In the US, the United States National CAD Standard pairs the AIA CAD Layer Guidelines with Uniform Drawing System modules for drafting conventions and symbols. Following one consistently matters more than which you pick.
Shadow is the second depth device, and it carries information rather than decoration. A cast shadow beside a reveal tells you how deep it is. Architects fix one notional sun direction for the set, commonly upper left at 45 degrees, so shadow lengths stay comparable. Hatch density thins as surfaces recede for the same reason. Presentation elevations often swap hatch for sampled material imagery, which our architectural textures collection is built for, though the construction set wants clean hatch and a written specification.
What Makes an Interior Elevation Different
An interior elevation applies identical projection to a wall inside the building, with ceiling and floor lines bracketing it. Because rooms are enclosed, it is keyed to a plan with a marker showing where the viewer stands and which way it points.
The content shifts with the audience. Exterior elevations serve planners and envelope trades; interior elevations serve joiners, tilers, electricians and kitchen fitters. They carry cabinet heights, splashback extents, tile setting-out lines, socket positions and cornice profiles, at tighter scales of 1:50 down to 1:20.
⚠️ Common Mistake to Avoid
Students routinely draw an interior elevation with no matching key marker on the plan, leaving the reader unable to tell which of four walls is shown. Add a lettered marker on the plan for every interior elevation and label the drawing with the same letter.
Scale and Level of Detail
Scale decides how much an elevation may say. At 1:200 a facade reads as massing and opening rhythm. At 1:100 you get openings, materials and levels, the standard for planning submissions. At 1:50 the drawing carries joint lines, coursing and reveal depths. At 1:20 it becomes a bay study a fabricator can work from, and that detail plotted at 1:100 turns to smudge. Our breakdown of architectural drawing scales maps the common ratios to their uses.
Heritage recording pushes this further than most projects need. The Historic American Buildings Survey guidelines for measured drawings, from the US National Park Service, set out how elevations of existing buildings are measured and drawn so the record could support reconstruction.
Elevation vs Perspective and Render
A perspective or render simulates the eye, so parallel lines converge and no dimension can be scaled off the image. An elevation refuses that in exchange for measurability. Use an elevation to verify a height, compare options at one scale or price cladding, and a perspective when someone needs to feel the building from the pavement. To see how the projection families relate, compare our explainers on one, two and three point perspective and on axonometric versus isometric drawings.
One trap deserves naming. Rendering software will happily produce an orthographic camera view that looks like an elevation but has been colour graded and stripped of line hierarchy. That is a presentation image, not a drawing, and it cannot stand in for a dimensioned elevation.
Common Mistakes in Elevation Drawings
Most elevation problems come from treating the drawing as a picture rather than a measured document. The recurring ones are easy to check before issue.
- A single line weight throughout, flattening the facade into a silhouette
- A missing ground line, so nothing anchors the building to grade
- Heights left undimensioned, pushing the decision onto site
- Roof pitch drawn by eye rather than set from plan geometry
- Shadows cast from different sun angles across one set
- Elevations that no longer match the plan after a late layout change
A section is the natural companion, supplying the depth an elevation cannot. Our round-up of section drawings worth studying shows the same weight and shadow logic when depth is actually cut.
Where to Go From Here
Your Next Step: Print an elevation you have drawn and check three things. Is there a ground line with levels? Are there three distinct line weights? Does every opening height also appear on the plan or section?
Frequently Asked Questions
What Is an Elevation Drawing Used For?
It communicates and verifies the vertical dimensions of a building face. Planning authorities judge height and appearance against neighbours, contractors set out openings and cladding, and design teams compare facade options at one scale.
Is an Elevation the Same as a Section?
No. A section cuts through the building and shows the sliced construction plus what lies beyond, while an elevation cuts nothing. Many sets include a sectional elevation, which cuts part of the building and draws the face beyond in elevation.
How Many Elevations Does a Building Need?
A simple rectangular building normally needs four, one per face. Angled wings, courtyards and stepped forms need more, because any face that cannot be read accurately from another elevation needs its own. The test is coverage, not count.
What Scale Should an Elevation Drawing Be?
For houses and small buildings, 1:100 suits planning submissions and 1:50 suits construction issue. Large buildings drop to 1:200 for the whole facade, with 1:20 bay studies where the envelope gets complicated. Interior elevations sit nearer 1:20.
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