Architects fees as a percentage or a lump sum, and who benefits

3 days ago
3 min read

Updated: 2 days ago

Introduction

There are three ways architects usually charge: a percentage of construction cost, a lump sum per stage, or a time charge. Each puts the risk of a project growing in a different place, and each creates a different incentive.

The percentage is traditional and carries an obvious awkwardness: the fee rises as the building cost rises, which means the architect is paid more when the project becomes more expensive. Clients notice this even when nobody says it. A lump sum removes that but transfers the risk of scope growth onto the practice.

Most small practices are better served by lump sums per stage with a defined scope, and by being explicit about what changes the figure. The definition is what makes it work.

1. Architects fees as a percentage or a lump sum place risk differently

Decide who is carrying what.

The percentage tracks the project

If the build grows, the fee grows. That protects the practice against a larger job but reads badly to a client watching their budget and depends on a construction cost nobody knows at the outset. Clients ask what happens if the build costs more.

A lump sum gives the client certainty

And gives you the risk of client changes. That is manageable only with a written scope. Without one, a lump sum is a guess.

2. Quote every stage, even the ones not yet commissioned

Clients need the whole picture.

Show the full sequence with a fee against each

Feasibility, concept, planning, technical design, tender, contract administration. Six lines on one page. Even where only the first is being appointed. Clients dislike open-ended commitments most of all.

Explain what stopping early means

Planning drawings are not construction drawings. Many clients do not know this and discover it expensively. Say it at the first meeting and again in writing.

3. Define the scope so a lump sum can survive

Scope is where fixed fees fail.

State the number of design iterations

Two, then further ones charged. State the rate for additional rounds. Unlimited revisions turn a profitable stage into a loss. Track how many each project actually uses.

Name the assumptions

Single storey, one planning submission, one contractor tender, a stated site area. Departures change the fee by agreement. List five or six assumptions.

4. Charge for the early work

Feasibility is routinely given away.

Price feasibility as a paid service

An initial study qualifies the client and pays for the thinking. It also produces a better brief. Free feasibility attracts people who are not ready to build. A modest fee filters usefully.

Take a fee on appointment

An initial payment before work begins filters out the clients who were never going to proceed. It also funds the early unpaid conversations.

5. Bill and review on a schedule

Projects run long.

Invoice at each stage completion

Stated in the appointment. This is standard and clients expect it. Do not let stages run unbilled.

Review the fee basis annually across the practice

Compare fees earned against hours recorded by stage. Most practices find one stage consistently loses money. Usually technical design.

Conclusion

Percentage fees rise when the building becomes more expensive, which clients notice whether or not anybody mentions it, and they depend on a construction cost nobody knows at the start. Lump sums per stage give the client certainty and give you the scope risk — which is manageable with a written scope and not otherwise.

Quote the whole sequence of stages with a fee against each even when only the first is commissioned, and explain plainly that planning drawings are not construction drawings. Cap design iterations, name your assumptions so departures are priced by agreement, charge for feasibility rather than giving it away, take a fee on appointment, and compare fees earned against hours recorded by stage once a year.