The Bluebeam alternative built for home builders.
Bluebeam was built for architects and engineers marking up flat PDF sheets. CoreSpec starts from a live 3D twin of the home, so every markup, spec, and change is pinned to the real model, not a page number.
A markup on a PDF is not a model of the home.
Bluebeam is a strong, general-purpose PDF markup and takeoff tool built for architecture, engineering, and commercial bid work. CoreSpec is purpose-built around one thing: a living 3D twin of a residential build, with annotation tools patented for exactly this.
| CoreSpec 3D | Bluebeam | |
|---|---|---|
| Built for | Residential builders and homeowners | Architects, engineers, commercial bid work |
| Source document | Live 3D twin of the home | Flat 2D PDF sheets |
| Annotations | Pinned to a point in the 3D model (patented) | Markup layer on a page |
| Stays current after handoff | Yes, one living twin | No, a markup set is a snapshot |
| Photoreal renders | Built in | Not offered |
| Homeowner handoff | Homeowner keeps the actual 3D twin | Not a built-in workflow |
| PDF markup & measurement | Supported | Core strength |
Bluebeam is a trademark of Bluebeam, Inc. Feature comparison reflects each product's general, publicly known positioning as of this writing.
Everything Bluebeam can't do, because it was never asked to.
A general AEC markup tool wasn't designed around a home builder's actual workflow, from selections to homeowner handoff. CoreSpec was.
A model, not a markup set
Every note is pinned to the real 3D geometry of the home, so it's still meaningful after the sheet it was drawn on is out of date.
Selections that don't get lost
Client selections and change orders live on the model itself, not scattered across separate markup sessions.
A better client experience
Photoreal renders and a navigable 3D twin, not a folder of markup PDFs, become part of how you win and close the client.
Purpose-built, and patented, since long before this category had a name.
Boom Interactive has been building 3D and interactive tools since 2015. The annotation system this page describes is patent-protected CoreSpec technology.
2015
Boom Interactive founded, building 3D and interactive tools.
10M+
square feet already modeled on the CoreSpec platform.
Patented
Geospatial digital sticky notes, tied to the real 3D model.
Frequently asked questions
Yes. CoreSpec supports document markup too, the difference is every annotation can also be pinned to the live 3D model, so it survives past the one page it was drawn on.
No. CoreSpec builds your 3D twin from the plans you already have, PDFs included. You don't have to start from a blank project.
No. Custom builders, production builders, remodelers, and designers all use the same twin, adapted to how each team works.
Give your markups a model to live in.
See how CoreSpec replaces flat PDF markups with a living 3D twin, built for how residential builders actually work.