Why Law Firm Software Projects Take Longer Than the Estimate

Law firm project overruns are concentrated in elapsed time rather than engineering time. A four-month integration takes seven; the development work consumes roughly the estimated four months, and the remaining three go to decision latency, security review, and data questions that require business answers.

The pattern is consistent enough across firms to be estimated. It usually is not, because the estimate was written against a corporate technology environment.

The structural cause is that a law firm is a partnership rather than a company with a technology department, and partnerships make decisions on a different cadence with direct schedule consequences.

Decision latency

Approvals that would take days in a corporate environment take weeks at a firm, and there is no escalation path that changes it.

In a corporate IT project, an approval is a meeting: someone with authority hears the options and decides. At a firm, the equivalent decision frequently affects how partners work: which system email is filed in, what the client portal exposes, how matter numbers are displayed. That decision requires input from people whose time is allocated in six-minute increments and whose availability is genuinely constrained.

This is not obstruction. Billable work correctly takes precedence. The scheduling consequence is arithmetic:

• Estimates written for a corporate cadence budget one line item for stakeholder review, typically one week
• The realistic figure is closer to three weeks per decision point requiring partner input
• A typical project contains four or five such decision points

That difference alone accounts for a substantial share of the gap between estimate and actual.

Security and confidentiality review

Outside developers consistently fail to anticipate the review that applies to privileged client material, and it can require architectural change.

Firms hold privileged material, and their clients increasingly impose security requirements through outside counsel guidelines. A project touching client data may therefore require approval against obligations the firm owes to specific clients, not only against the firm's own policy.

What that review can change:

• Where data may be stored, at the jurisdiction and tenancy level
• What may be written to logs
• Which vendors and subprocessors are permitted
• Whether data may leave the firm's control boundary for processing
• Retention and deletion requirements

Discovering these constraints in month three is expensive. Discovering them in week one is not, and the difference is entirely a matter of when the review starts.

Data that predates the current systems

Client and matter data at any established firm carries thirty years of history, including history from before the systems that hold it existed.

What surfaces during integration work:

• Matter numbering has changed format at least once, usually during a billing system migration, and both formats remain in use
• Clients that merged or were acquired exist under multiple unlinked records
• The staff directory and the billing system disagree about the responsible attorney on a set of matters, because one was updated during a practice group change and the other was not
• Matters showing open that closed in 2011
• Conflicting client names across systems, with no indication of which is authoritative

None of this is unusual and none of it is anyone's fault. It surfaces as a sequence of decisions that cannot be made quickly, because determining which record is authoritative for a given client is a business question landing on someone with a full calendar.

The estimate line read "data mapping: one week." The actual shape is one week of mapping and four weeks of waiting for answers about what the data means.

What a defensible estimate contains

Three elements distinguish estimates that hold from estimates that do not.

Decision latency budgeted separately from development time, with named decision points and realistic elapsed duration for each. Not "stakeholder review: 1 week" but "approval on matter-record authority, requires practice group input, 3 weeks elapsed." Naming the decision also identifies who must be scheduled, which is what makes the duration achievable.

A data profiling phase before the timeline is committed. A few days spent counting duplicate client records, matters using the legacy numbering format, and the divergence between directory and billing produces more schedule information than any amount of architectural planning.

Security review as a work stream starting in week one, not as a checkpoint near the end. Firms that run it in parallel from the start lose almost nothing to it. Firms that encounter it in month three routinely lose a month, and sometimes lose architecture decisions already implemented.

An estimate built this way looks slower on paper than the alternative, because the elapsed time other estimates omit is written down. It also tends to finish close to the date it stated.