Should you build or buy Legal Document Management?
Legal document management software organizes a law firm's files by matter rather than by folder: version control, email-to-matter filing, full-text search, and ethical walls that block conflicted staff from a client's documents. It replaces shared drives and inboxes with one system every fee earner uses to find and file work.
Buy iManage or NetDocuments unless you already run a strong Microsoft 365 practice; firms that built on SharePoint made it work with add-ons, and two of them later switched to a vendor. The DMS is hygiene, so spend the engineering elsewhere.
Build it, buy it, or bridge?
When building makes sense
Building is a real option only for a firm with Microsoft 365 already licensed and IT staff willing to commit to a multi-year project. Lewis Silkin built its own SharePoint document management system firmwide, and the result was strong enough that the firm eventually sold it; it became the commercial DMS Excalibur under Sword. That is the ceiling case: a build good enough to become someone else's product. It is also a cautionary one. Trade coverage of the SharePoint-as-legal-DMS trend describes Excalibur itself failing to gain wider traction, with Lewis Silkin later evaluating alternative SharePoint providers again. Matter-centric filing, email-to-matter capture, and ethical walls are a deep, narrow problem. A firm taking this on should expect years, not months, and should plan to lean on commercial add-ons for whatever a base SharePoint site does not cover.
When buying makes sense
Buying is the stronger case for most firms. iManage and NetDocuments give every fee earner matter-centric filing, email management, and search on day one, against a SharePoint build that still demands real implementation spend even when Microsoft 365 is already licensed. Filing and finding documents confers no advantage over other firms; the work is pure hygiene with a compliance overlay, and the risk of getting ethical walls wrong is a bar complaint, not a minor bug. LexWorkplace prices its entry tier at $395 a month for three users, a fraction of what a custom build costs before counting years of IT time. Winckworth Sherwood is the clearest evidence for buying: the firm built its own bespoke SharePoint DMS with MacroView back in 2010, then replaced it with NetDocuments after a review, even after already owning a working build.
The desk read
Build-versus-buy analysis for Legal Document Management is being written. In the meantime, the framework that drives every B4 call is on the B4 Index page.
Frequently asked
What is legal document management software?
It organizes a law firm's files by matter instead of by folder, so every fee earner files and finds work the same way: version control, full-text search, automatic email-to-matter capture, and ethical walls that block a conflicted lawyer from a client's documents. Email filing and ethical walls are the two pieces vendors have spent decades refining, and the two a self-built system struggles hardest to get right.
Can a law firm build its own document management system on SharePoint?
Yes, and several have. Daley Mohan Groble migrated 600,000 files into a matter-centric SharePoint site using a custom .NET tool built by an integrator. Shoosmiths deployed SharePoint with the MacroView add-in for a firm of nearly 900 users. Two firms that took this route, AEGIS Law and Winckworth Sherwood, later moved to a vendor platform instead, Epona and NetDocuments respectively, rather than keep maintaining the build.
What do legal DMS vendors cost?
LexWorkplace starts at $395 a month for three users. iManage and NetDocuments price per user per month with implementation on top. A comparable SharePoint build runs tens of thousands of dollars in implementation before counting ongoing IT time to maintain it.
What are the main legal document management vendors?
Representative vendors include iManage Work, LexWorkplace, NetDocuments, Worldox, LexWorkplace. iManage, NetDocuments dominate large-firm deployments with deep email-to-matter filing, ethical-wall controls. Worldox, LexWorkplace target small, mid-size firms that want the same core discipline at a lower per-seat cost. PageLightPrime rounds out the field with matter-centric filing built for firms already running on Microsoft 365. B4 Pro includes the category score and the full vendor list.