Product
Mod tracking
A modified car’s history usually lives in a forum thread, a stack of order confirmations, and the previous owner’s head. Years later, nobody can say which brand of coilovers is on the car or what the part number of that one bushing was.
The gap costs money at resale and time at the next install, when half the work is rediscovering what is already on the car.
How BuildBay handles it
BuildBay treats each mod as a record: brand, part number, vendor, and cost, with parts and labor split. Install type is recorded, and milestones can be flagged so the build’s turning points stand out.
Status follows the whole life of a part: planned, ordered, installed, removed, sold, or wishlist. A mod that comes off the car stays in the history instead of disappearing.

In detail
- Six statuses, one lifecycle
- Planned, ordered, installed, removed, sold, and wishlist. The record follows the part from idea to install, and off the car again when that day comes.
- Parts and labor, split
- Each mod’s cost is recorded as parts and labor separately, so shop installs and DIY installs stay comparable.
- Part numbers where you can find them
- Brand, part number, and vendor live on the record, not in an email archive from three addresses ago.
- Milestones
- Flag the mods that changed the car. Milestones anchor the build history and carry through to the public build page.
Who it is for
- Builders who want the spec sheet to outlive the forum thread.
- Buyers of modified cars who inherited undocumented work.
- Sellers who need to show what was installed, when, and at what cost.
Related features
In the library
Keep this with the vehicle
BuildBay is in early access. Join the waitlist and add your first vehicle when the door opens.