The two terms get used almost interchangeably in Kolkata construction conversations, but they're not the same service, and hiring the wrong one for your situation is how projects end up over budget with nobody accountable for it. Here's the actual distinction.
What a General Contractor Is Responsible For
A contractor is hired to build what's on the drawings. They manage their own labor and subcontractors, source materials, execute the construction, and get paid for the work completed — usually against a quote or a BOQ they've priced themselves. Their job is to build; whether the project stays on budget and on schedule is a byproduct of how well they run their own site, not something they're independently accountable to you for.
What a PMC Is Responsible For
A project management consultancy is hired to protect the client's interests independent of who's doing the building. That means verifying the contractor's billing against actual measured work, coordinating between multiple trades and contractors so handoffs don't stall the schedule, catching quality issues on daily site visits, and giving the client a second, independent technical opinion when something looks wrong. A PMC isn't paid more for construction costing more — which is exactly why the incentive doesn't conflict with the client's.
Side by Side
| Aspect | General Contractor | Project Management Consultancy |
|---|---|---|
| Who they work for | Themselves, fulfilling a construction contract | The client, independent of the contractor |
| What they're paid for | Completed construction work | Oversight, verification, and coordination |
| Billing incentive | Tied to their own quoted/billed work | Independent — not tied to construction cost |
| Who builds | They do | They don't — they verify and coordinate |
| Typical engagement | Single construction contract | Feasibility through handover, across one or more contractors |
Can You Have Both?
Most of Weston's PMC clients already have a contractor in place, or hire one after we're engaged — the two roles aren't competing, they're complementary. A contractor without independent oversight has no one checking their billing against what's actually been built. A PMC without a competent contractor has nothing good to verify. The combination is standard practice on any project where the budget or complexity justifies it.
A contractor is paid to build. A PMC is paid to make sure what got built matches what you paid for.
When You Only Need a Contractor
For a small, predictable scope — a single-room renovation, a straightforward repair, a project where you or someone you trust can personally verify the work — a good contractor alone is often enough. The calculus changes once a project involves multiple trades, a longer timeline, a budget large enough that billing errors matter, or a client who can't be on site daily to check the work themselves. That's the point where independent PMC oversight starts paying for itself.