Can a structural engineer do an architect's job?

No — they are different licenses and skill sets. An engineer won't design your floor plan; an architect won't do your lateral analysis. Some small firms offer both under one roof with both licenses on staff.

Do I need an architect for a home addition?

It depends on scope and your city: many additions need architectural drawings for the permit, and structural engineering wherever loads change. Check your city's submittal checklist.

Who stamps the structural drawings?

A licensed Professional Engineer (PE) in the project's state — see how permit drawing sealing works.

Is it cheaper to hire one firm for both?

Sometimes, but only if that firm genuinely holds both capabilities. A cheap 'both' from an unqualified provider costs more in corrections than hiring right the first time.

Structural Engineer vs. Architect: Who Do You Actually Need?

Owners ask us this constantly: "Do I need an architect, a structural engineer, or both?" The confusion costs people money — here is the clear answer.

What an architect does

The architect designs how the building looks and functions: floor plans, elevations, space planning, aesthetics, and (usually) the permit set's architectural sheets. They lead the design vision and coordinate the overall submittal.

What a structural engineer does

The structural engineer designs how the building stands up: foundations, framing, beams, columns, lateral (wind/seismic) systems — and the calculations proving it all works. On permit sets, the structural sheets and calcs are what plan reviewers scrutinize most.

When you need both

New custom home: architect for design, engineer for structure — standard team.
Second-story addition: both, almost always.
Removing load-bearing walls: engineer required; architect optional unless the layout changes significantly.
Simple beam replacement / repair: often engineer only.
Commercial / multi-family: both, plus MEP engineers.

Who to hire first

For design-driven projects, start with the architect — then bring the engineer in early, not after the design is finished. Late-stage structural surprises (a beam that doesn't fit the ceiling height, a foundation the soil can't support) are the most expensive kind. For structural-led projects (repairs, retrofits, additions on existing plans), start with the engineer.

How we work with architects

MAHAR SOLUTION acts as the structural extension for US architects and contractors: we produce the structural calculations and CD sheets to your architectural backgrounds, coordinated for sealing by the state-licensed PE of record. See our services and past work.

Send us your project — we will tell you honestly what engineering it needs.