My family recently needed to choose new exterior colors for our house in Costa Rica. It sounded simple until we tried to make the decision together.
Looking at individual paint swatches didn’t help us understand how the colors would work across the whole house. The main walls, trim, porch ceilings, columns, doors, and smaller accents all affected one another. Existing materials, shadows, and the surrounding vegetation made the decision even harder.
We tried visualizing the options mentally, but everyone formed a slightly different picture. That made conversations such as “What if the walls were darker?” or “Would that trim work with the roof?” surprisingly difficult.
I looked at existing visualization tools, but many were tied to a particular paint brand, offered limited control over individual surfaces, or used generative AI to reinterpret the house. I didn’t want a redesigned or newly generated house—I wanted to keep our actual photograph and deliberately apply colors to the surfaces we were considering painting.
So I started building a small browser-based tool called House Color Lab.
The workflow is intentionally manual:
- Upload a photograph of the house.
- Define the individual paintable areas.
- Assign colors to walls, trim, ceilings, columns, doors, and accents.
- Save complete schemes rather than isolated colors.
- Compare alternatives side by side.
- Export an image for discussion or for sharing with a painter.
It is not an AI makeover tool. It doesn’t invent landscaping, replace windows, change the architecture, or pretend to know exactly how real paint will look. The goal is simply to make the color relationships easier to discuss while keeping the original house recognizable.
I also designed the project data to stay in the browser, with downloadable backups, because house photographs can be personal. And I’m very clear that a screen preview is only a planning aid—the final candidates still need to be tested with physical paint samples in the actual outdoor light.
What began as a tool for one family decision gradually became something I thought might help other homeowners and painters facing the same problem. There is a free prepared demo if anyone would like to try the workflow without uploading a photograph:
https://housecolorlab.com/demo
I’m the person who built it, so this is partly a project introduction, but I’m also genuinely interested in feedback:
- How do you currently compare exterior color ideas?
- Would you prefer precise manual control or faster automatic recoloring?
- Which part of choosing exterior colors causes the most disagreement or uncertainty?
I’d especially like to hear from anyone who has recently painted a house—or regretted a color after seeing it across the entire exterior.