# BMC Stock Holdings

**Canonical:** https://apis.io/providers/bmc-stock-holdings/  
**Website:** https://www.bldr.com  
**APIs profiled:** 0

BMC Stock Holdings, Inc. was one of the largest professional building materials distributors in the United States, serving homebuilders, remodelers, and contractors with lumber, structural components, millwork, doors, windows, and installed services. The company was formed in December 2015 through the merger of Stock Building Supply and Building Materials Holding Corporation (BMHC) and traded on NASDAQ under the ticker BMCH, headquartered in Raleigh, North Carolina. On January 1, 2021, BMC Stock Holdings completed an all-stock "merger of equals" with Builders FirstSource (NYSE: BLDR), creating the nation's largest supplier of structural building products to the professional homebuilding market. The combined company retained the Builders FirstSource name, BLDR ticker, and Irving, Texas headquarters. The merger had an enterprise value of approximately $2.5 billion and produced a company with more than $11 billion in annual sales, approximately 26,000 employees, and roughly 550 distribution and manufacturing locations across more than 40 U.S. states. BMC Stock Holdings no longer exists as an independent entity. The legacy buildwithbmc.com domain redirects to bldr.com, and BMC product lines and branches have been absorbed into the Builders FirstSource network. This profile is retained as a historical Fortune 1000 record (BMC ranked #677 prior to the merger) and as a redirect to the successor profile at api-evangelist/builders-firstsource. BMC operated as a commodity-and-services distributor and did not publish public developer APIs, OpenAPI specifications, SDKs, or a developer portal. No API surface is documented for this provider.

## Kin Score — 5.0 / 100 (minimal)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 5.0).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Bmc Stock Holdings Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Building Materials, Distribution, Construction, Lumber, Homebuilding, Defunct, Merger And Acquisition, Fortune 1000

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/bmc-stock-holdings/). Scores are computed from the provider's own public artifacts under a published rubric.