3D-Printed House Numbers to Sell: Outdoor Plastic, Fire-Code Sizes, Real Prices
All ten digits sliced at 4 and 6 inches in outdoor ASA. Type an address for its price, and see which height clears the fire code’s stroke rule.
Every home needs its number on the wall, buyers care how it looks, and no two orders are the same. That makes house numbers a good printed product: each order is made to the buyer’s address, so there is no stock to guess at. The printing is cheap. A 4-inch digit in outdoor ASA is 8 to 14 grams and under half an hour on the printer, $1.17 to $1.74 to make. We modelled all ten digits at 4 and 6 inches, sliced them on our production printers, and priced whole addresses. Type yours below.
Height
Plastic
The address, one order
$6.06
4 digits, 47 g of ASA, 1.5 print-hours.
Why sell the whole address
Every order is billed at least the order minimum. One digit at $1.17 on its own would be billed $5.00; the whole number in one order shares that floor.
Reference digits, 6 mm thick, modelled for this page and sliced in each plastic on our production profile (2026-11-08). Plastic at its cheapest in-stock price per gram ($0.03), print time at today’s rate, before shipping. Mounting hardware or adhesive is not included.
Sell the address
Sell the whole number as one product, not digit by digit.
From our slicesA single 4-inch digit is under $2 to make, but every order is billed at least $5.00. The address 1428 in ASA is $6.06 as one order; two digits on their own reach the minimum.
The plastic: ASA in the sun
- ASA
- Made for outdoors. Bambu Lab describes its “extraordinary UV, oxidation, and aging resistance” for long-term outdoor use, and it holds its shape to 100°C under load. The one to use on a sunny wall.
- PETG
- A little cheaper ($5.78 against $6.06 for a 4-inch 1428) and fine on a covered porch. We make no sunlight claim for it.
- Not PLA
- PLA softens at 57°C under load in Bambu Lab’s data. A dark digit on a wall in full sun is no place for it.
Sizes and the fire code
Many US towns adopt the International Fire Code’s address rule, section 505.1: each character not less than 4 inches (102 mm) high, with a stroke at least ½ inch (12.7 mm) wide, visible from the street. Many amend it upward: 6 inches for commercial buildings in some cities, 12 inches in others. That is why we sliced our digits at a true 102 mm and 152 mm rather than a round 100 and 150.
We measured the strokes of the printed outlines. At 4 inches, Arial Bold digits keep a ½-inch stroke everywhere except where the 3’s curves join, about 11.7 mm. At 6 inches the narrowest point is that same join at about 17.4 mm. So 6-inch numbers clear the rule with room to spare, and they cost about $4.60 more for a four-digit address. Tell buyers to check their own town’s code, and list the height in inches.
Designing and selling them
- Thick enough to read
- Our digits are 6 mm deep, so they cast a shadow and read from the street. Thinner looks flat; much thicker only adds print time.
- Your own lettering
- A bold, simple shape reads best at a distance. Design your own numerals or use a font whose licence allows products; our Arial outlines are only a reference.
- Mounting
- Our digits are plain, with no holes. Say in the listing how to mount them, with outdoor mounting tape or adhesive the buyer supplies, or design holes or pins into your own.
- One listing, every digit
- A variation listing where the buyer types the number keeps the address in one order, which is what keeps it above the minimum and the postage to one parcel.
House numbers sit naturally beside personalised products and other things made to the buyer’s order. Before you list a design you did not draw, see what you can legally sell. Every rate is on our price list.
FAQ
Yes, in ASA, which Bambu Lab makes for long-term outdoor use with UV resistance. PETG suits a covered porch. Avoid PLA outdoors: it softens at 57°C under load.
With us a 4-inch digit in ASA costs $1.17 to $1.74 to make. A four-digit address such as 1428 is $6.06 as one order at 4 inches and $10.64 at 6 inches, before shipping.
Where the International Fire Code applies, at least 4 inches (102 mm) with a ½-inch stroke, and many towns require more, such as 6 inches for commercial buildings. Check your local code.
ASA for numbers in full sun, PETG for a sheltered spot. Both are stronger in heat than PLA.
Sell the whole address as one product. Every order with us is billed at least $5.00, and one digit alone is under $2 to make, so the full number in one order costs far less per digit and ships in one parcel.
Every address printed to order.
List the numbers in your store with a choice of digits, and each order is printed in outdoor plastic, checked by hand and shipped under your brand.
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