Architect vs Draftsman vs Engineer: Who Do You Actually Need for Your Building?

“Just draw something for me, the contractor will handle the rest.” That sentence has cost more Nigerians money than any contractor ever stole, because a house needs more than a drawing, and every professional you skip, you pay for later in a different currency.

Here is who does what, when you need each one, and what it costs in Nigeria.

The Cast of Professionals

Professional	What they do	When you need them
Draftsman	Produces drawing sets, often without professional design liability	Simple, low-risk projects where you accept the design risk yourself
Architect	Designs the building: layout, form, function, and coordinates the design team	Every serious building, they produce the approval-ready architectural set
Structural engineer	Designs the skeleton: foundations, columns, beams, slabs, with calculations	Buildings above one storey, weak or filled soil, unusual spans
MEP engineer	Designs electrical, plumbing and mechanical systems	Any building you will actually live or work in
Quantity surveyor	Costs the project: BoQ, contract, payment milestones, cost control	Every project with a budget, i.e., every project
Project manager / site supervisor	Runs the build: contractors, quality, schedule	When you cannot be on site every day

The “Just a Draftsman” Trap

A draftsman draws what you describe. An architect designs what you need, orientation for the sun, ventilation, circulation, structural logic, and code compliance. The difference shows up in three places:

1. Approval, most planning authorities require drawings from registered professionals; draftsman-only sets get rejected
2. Structural safety, nobody calculated the columns; the risk is yours
3. Resale and rentability, a professionally designed house rents and sells better

Who Do You Really Need?

• Fence or gate project: surveyor for boundaries, maybe a draftsman
• Bungalow on a normal plot: architect + quantity surveyor, plus structural engineer for the foundation design
• Storey building anywhere: architect + structural engineer + quantity surveyor, non-negotiable; several states require a soil test for buildings over 10 metres
• Large residential or commercial: the full team, architect, structural, MEP, QS, project manager

What Professional Fees Cost in Nigeria (2026)

• Architectural design: typically 4 to 6% of construction value, or a fixed design fee
• Structural engineering: usually part of a combined professional fee or a percentage of build cost
• BoQ / quantity surveying: typically 1.5 to 3% of project value, or fixed
• Project management: commonly 3 to 10% of project cost, depending on scope

Professional fees are the best-value line in your entire budget. On a ₦25M project, 6% buys you drawings that get approved, a BoQ that stops inflation, and engineers whose names are on the design, not a contractor guessing.

The One Thing Everyone Needs First

Before any design, you need land data: a registered survey plan, and ideally a topographic survey so the architect designs for your actual site. And before any money is committed, you need a Bill of Quantities so the numbers are real.

Design Your Building Right

VETONGROUP provides the full design team under one roof. architectural design, structural engineering, MEP engineering, landscape design and Bills of Quantities, for projects in Edo State, Lagos, Abuja and nationwide. One partner, one accountable design.

Book a free design consultation, response within 24 business hours.