Lay the whole arrangement out on the floor first, keep a consistent 5 to 8 cm gap between frames, and align one shared line through the group. Those three decisions separate a gallery wall that looks composed from one that looks like pictures accumulated on a wall over time. None of them requires a hole in the plaster to test.
A gallery wall is not harder than hanging a single painting, but it fails in more places. The usual faults are uneven gaps, no organising line, and a group that is too small for the wall it sits on. Each is avoidable on the floor, at no cost, before anything is fixed.
Key takeaways
- Arrange on the floor, photograph it, then transfer to the wall.
- Consistent spacing matters more than the exact figure. 5 to 8 cm suits most groups.
- Every strong gallery wall has one shared line: a level top, a level bottom, or a centre line through the middle row.
- Treat the group as one rectangle and size that rectangle to the wall or the furniture below.
- Hang the anchor piece first and build outward from it.
Step 1: choose the shape of the group
Decide what the outer boundary of the arrangement will be before choosing individual pieces. Three shapes cover nearly every situation.
The grid
Identical or near identical frames in even rows and columns. It is the most formal option, the easiest to measure, and the least forgiving: the spacing must be exact, because any inconsistency is immediately visible against the regularity of everything else. Suits a set of related works.
The salon arrangement
Mixed sizes filling an irregular but bounded area. It tolerates variety in frame styles and subjects, and is the right choice for a collection gathered over time. It needs a defined outer edge to work; without one it drifts.
The row
A single horizontal line of works, aligned on their centres. It suits a corridor, a stairwell wall, or a long low space above a sideboard, and it is the simplest arrangement to get right.
Step 2: build it on the floor
Clear a floor area roughly the size of the wall you are working with. Lay the pieces out face up and move them until the arrangement holds together.
Start with the largest piece, which becomes the anchor. Place it slightly off centre for a salon arrangement, or dead centre for a grid, then position the rest around it. Balance visual weight rather than counting pieces: one large dark canvas balances two or three small pale ones, so a group with equal numbers on each side can still feel lopsided.
Distribute subjects and colours across the group rather than clustering them. Three portraits together in the corner of a mixed arrangement pull the eye to that corner and unbalance everything else.
Photograph the layout when it looks right. A photograph flattens the arrangement to two dimensions, which is how it will be seen on the wall, and it reveals problems that are hard to see standing over the group. It is also your reference while hanging.
Step 3: set the spacing
Consistency is the whole point. A group with gaps of 5, 9 and 14 cm looks accidental no matter how good the individual works are, while the same pieces at a uniform 7 cm read as deliberate.
Between 5 and 8 cm suits most domestic arrangements. Tighter spacing, around 4 cm, makes the group read as a single dense object and works well for a grid of small pieces. Wider spacing, past 10 cm, starts to break the group into separate works, which defeats the purpose.
Cut a spacing gauge from a strip of card at your chosen width and use it between every pair of frames rather than measuring each gap. It removes the arithmetic and the accumulated error.
Step 4: find the shared line
Every gallery wall that looks resolved has one line running through it. Choose which before you hang.
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A shared centre line. The centres of all pieces, or of the middle row, sit on one horizontal at about 145 cm. This is the most common choice and the most forgiving of mixed sizes.
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A shared top line. The tops of every frame align. Formal and effective where the pieces are similar in height, but it leaves a ragged bottom edge if they are not.
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A shared bottom line. The bottoms align, like objects on a shelf. A deliberate, graphic choice that suits a row above a sideboard.
For a grid, the centre of the whole block sits at about 145 cm. For a salon arrangement, the centre of the overall rectangle sits there. Where furniture is below, the furniture governs: leave 15 to 20 cm between it and the bottom of the lowest frame.
Step 5: transfer to the wall
Two reliable methods. Either trace each piece onto kraft paper, cut the templates out, and tape them to the wall in the layout from your photograph, marking the hook position on each template before you take it down. Or hang the anchor piece first and work outward, using the spacing gauge each time.
The template method is slower and more accurate, and it is the better choice for a grid where errors compound. The anchor method is faster and suits a salon arrangement, where small deviations are absorbed by the irregularity of the layout.
Either way, mark hook positions rather than frame corners. The hook is what you are actually placing, and converting from a frame outline to a hook position while standing at the wall is where mistakes happen. Account for the wire drop on each piece separately, since it varies between frames.
Sizing the group to the wall
The arrangement is measured as one rectangle: the full width and height of the outer boundary, gaps included. Apply the usual targets to that rectangle. On an empty wall, fill half to three quarters of the usable width. Above furniture, aim for about two thirds of the furniture width. Our guide to sizing art to a wall covers the measuring in detail.
An undersized gallery wall is the most common failure of all: a cluster of small frames marooned in the middle of a large wall, with too much empty space around it. Adding more pieces is the usual instinct and it does work, provided the spacing stays consistent and the outer boundary stays a coherent shape.
Frequently asked questions
How much space should I leave between pictures on a gallery wall?
Leave a consistent 5 to 8 cm between frames, which suits most domestic arrangements. The consistency matters more than the exact figure: gaps of 5, 9 and 14 cm look accidental regardless of the quality of the work, while a uniform 7 cm reads as deliberate. Cut a card gauge at your chosen width and use it between every pair of frames rather than measuring each gap.
How do I plan a gallery wall before hanging it?
Lay the whole arrangement out on the floor in an area roughly the size of the wall, starting with the largest piece as the anchor and building around it. Photograph the layout once it looks right, because a photograph flattens it to two dimensions, which is how it will be seen on the wall, and it becomes your reference while hanging.
Do all the frames need to match?
No. A salon arrangement of mixed sizes and frame styles is a legitimate and common approach, and it suits a collection gathered over time. What holds a mixed group together is consistent spacing and one shared alignment line, not matching frames. A grid of identical frames is a different, more formal choice that demands exact spacing because any irregularity is immediately visible.
How high should a gallery wall be hung?
Centre the whole arrangement, treated as one rectangle, at about 145 cm from the floor. For a grid, that means the centre of the block; for a salon arrangement, the centre of the overall boundary. Where furniture sits below, the furniture governs instead: leave 15 to 20 cm between the top of the furniture and the bottom of the lowest frame.
What is the shared line in a gallery wall?
The shared line is the single alignment that runs through the whole group, and every resolved gallery wall has one. The three options are a shared centre line through the middle row, a shared top line where all frame tops align, or a shared bottom line like objects on a shelf. A centre line is the most common choice because it tolerates mixed sizes best.
How do I transfer the floor layout onto the wall?
Either trace each piece onto kraft paper, cut the templates, and tape them up in the photographed layout, marking each hook position before removing them. Or hang the largest anchor piece first and work outward using a spacing gauge. The template method is more accurate and better for grids, where small errors compound across the block.
How many pieces should a gallery wall have?
There is no correct number, because the group is sized by the area it fills rather than by how many pieces it contains. Measure the outer rectangle of the arrangement and aim to fill half to three quarters of the usable wall width, or about two thirds of the furniture width below. Add or remove pieces until that boundary is the right size.
Why does my gallery wall look unbalanced?
Usually because visual weight rather than piece count is uneven. One large dark canvas carries the weight of two or three small pale ones, so an arrangement with equal numbers on each side can still lean. Clustered subjects cause the same problem: three portraits grouped in one corner pull the eye there. Distribute colours, tones and subjects across the whole group.
Should I mark the frame corners or the hook position?
Mark the hook position. The hook is what you are actually placing, and converting a frame outline into a hook position while standing at the wall is where most errors occur. Measure the wire drop separately for each piece, since it varies between frames, and subtract it from where the top edge of that piece should sit.
My gallery wall looks too small for the wall. What now?
Adding more pieces does work, provided the spacing stays consistent and the outer boundary remains a coherent shape rather than sprawling. An undersized cluster marooned in the middle of a large wall is the most common gallery wall failure. Measure the outer rectangle first and check it against half to three quarters of the usable wall width before adding anything.
References
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On the spacing and proportion figures: the 5 to 8 cm gap, the 145 cm centre line and the half to three quarters wall coverage guide are design conventions in common professional use rather than published standards. No institutional source was found publishing them, so they are described as conventions throughout this page. Checked 5 September 2026.
