Frequently asked questions about your wall.
Cost, design, process, durability: these are the questions clients ask us most.
Ask us
Inquiry and quote
Prices per square meterHow much does a mural cost?
Four things determine the price: how complex the motif is, the substrate, the working height and whether the surface is sealed. You can calculate a first guide price for your surface in the price calculator. Once the design is agreed, a fixed price applies to your wall.
What should I include with my inquiry?
Photos of the surface, its approximate size, your budget range and your preferred date. That's all we need for a first assessment. If you already have an idea for a motif, feel free to add it.
How quickly will I get a reply?
Within 24 hours, usually the same day. The written quote normally follows three to five business days later.
Will someone visit beforehand?
Usually that's not necessary: photos and a short video of the surface are enough for us to prepare the quote. If you'd like an on-site appointment, we're happy to arrange one.
Do you work in my area?
Yes, we work across Germany and internationally. Our headquarters is in Offenbach am Main, with branches in Berlin and Solingen and a studio on Mallorca. In every major German city, we know artists we've already worked with.
What's possible on a small budget?
More than many people think. Instead of a large wall, a canvas, a smaller motif or a workshop might be the right fit. We tailor the work to your budget: less surface, a simpler motif, or prep work such as the base coat that you take on yourself.
Design and motif
Will I see the motif before any spraying starts?
Yes, always. After a call by phone or video, we show you suitable references, you choose a direction, and we create the design. Two rounds of revisions are included. Only what you've approved goes on the wall.
Does the design cost extra?
Yes. The design is a small job of its own, because that's where the actual creative work happens. Its price depends on the surface and scope. If the motif ends up more complex or simpler than expected, we adjust the quote before you commission the painting.
We don't have an idea for a motif yet. Is that a problem?
No, that's how most projects start. In our conversation, we work out who sees the wall, what should stick, and what fits the surroundings. If you'd like to browse beforehand, you can save suitable motifs and send them with your inquiry.
Which styles do you work in?
Photorealistic portraits, graffiti-style lettering, comic characters, stencil art, large-scale murals and 3D illusions. Logos and lettering without any graffiti look, too: we transfer logos with stencils so they match 1:1. For every job, we choose the artist whose style suits the motif.
Can you match our brand colors?
Yes. We work with the RAL, HKS or Pantone values from your corporate design. For strictly managed brands, we create a color sample on your substrate beforehand, because plaster renders a shade differently than concrete.
Process and painting
How does a project work?
After your inquiry, you receive an initial quote. Then you give two approvals, both informally by email: first the design, then the final quote. We schedule the artists, aerial platform or scaffolding and the date. Once the work is done, you give final sign-off on the wall on site or via photo and video.
How long does the work take?
We can finish a small wall in one to two days, a standard project in three to seven days. Large projects need two to four weeks on site. Most of the time beforehand goes into design and coordination, not into work on the wall.
When should I inquire about an exterior wall?
Ideally early in the year. Outdoors, we usually spray from mid-March to the end of November, longer on sheltered surfaces. That leaves enough time for design and planning before the season starts. In winter, we paint interiors.
What does a day at the wall look like?
We coordinate our arrival with you and start around 9 a.m. First we cover the surroundings, prime and sketch the outline of the motif, using a grid, a projector or a VR headset. Then the spraying begins. If there's public foot traffic, we cordon off the area.
Who will come to us?
An artist from our network whose style suits your motif, or a team for large surfaces. Our core network includes well over 100 artists. Marcus Dörr, founder of the artmos4 agency, checks every result on site.
What happens if it rains?
Then we pause. Our spray paints are dust-dry within a few minutes, so the finished part isn't affected. We spray at temperatures between 0 and about 35 °C.
Paint, substrate and durability
More on graffiti protectionWhich paints do you use?
For spraying, we use Montana Gold, in our view the highest-quality can. We pre-paint surfaces with Brillux facade paint. Where odor is an issue, such as in offices, we spray with water-based cans.
Which surfaces do you work on?
Smooth plastered walls are best. We regularly paint garage doors and substations. An insulated facade is also possible: we look at it beforehand, choose the right material and avoid using very dark colors over large areas. For wood and glass, we advise you case by case.
How long does a mural last outdoors?
That depends on sun, weather and the colors used, so there's no fixed number. As a guide, figure five years, or ten with sealing. Some of our walls are 15 to 20 years old and are only slightly less vibrant than on day one.
Does a mural keep tags away?
Taggers look for bare gray walls. In the scene, a well-made piece is off-limits, because you can see how much work went into it. HanseWerk tested this on one substation first, then had around 100 more painted across northern Germany. If a tag does appear, it washes off a sealed surface and the mural stays.
What does sealing do?
It protects your mural. In big cities, busy locations, public surfaces and on substations, we recommend the anti-graffiti coating Graffiti Guard in two coats, so tags come off more easily. For strong sun, there's UV protection.
Permits and rights
Do I need a permit for a mural?
On your own wall, usually not. It can be different if the building is a listed historic building, the city has design regulations, or the motif shows your logo and therefore counts as advertising. As the owner, you handle the permit, because you know your building best. If we notice something on site, such as a listed building next door, we'll let you know.
I don't own the wall. Is it still possible?
Yes, with the owner's written consent. As a tenant, ask your landlord. In a condominium, the owners' meeting decides on the facade. With the design and quote, everyone involved can see beforehand what will be created.
Can we use photos of the mural in our advertising?
Yes. With the invoice, you receive photos of the finished wall and may use them for your own communications, from your website to press releases. If the motif is to appear on products such as packaging or merchandise, we agree on that beforehand.
Does artmos4 sign the mural?
Usually yes, small, at the edge. If a signature doesn't suit the location, such as in a company reception area, we agree beforehand how to handle it.
Workshops and live painting
More on workshopsWhat's the difference between a workshop and live painting?
In a workshop, your guests do the spraying themselves, guided by our artists. In live painting, artists create in front of an audience, on a wall, canvases or objects, while your guests watch.
How many participants can a workshop have?
From five to 5,000 participants, from two hours to several days. There's one artist for every ten participants. Up to 200 canvases can be combined into one large overall picture.
What do we need to prepare for a workshop?
Almost nothing. We need the space, its size and whether it's indoors or outdoors. We bring coveralls, respirator masks, gloves, canvases and covering material. We agree on the motif, colors and stencils with you beforehand. Ideally, book one to two months in advance.
What happens to the pictures after the workshop?
They stay with you and often end up hanging in the offices. With grid canvases, each participant takes their piece of the overall picture home.
Didn't find your question?
Write to us. We'll reply within 24 hours, in most cases the same day.

