When should you hire an architect?

You should hire an architect when a project affects the structure, layout, use, external appearance or legal configuration of a building, or when design and coordination decisions could materially affect cost and execution. Even when an architect is not legally required, early professional involvement can help you define the scope, compare options, prepare a realistic budget and avoid expensive changes once construction has started.

What does an architect do in a renovation?

An architect is a qualified professional who designs buildings and alterations, translates the client’s needs into technical documentation and helps coordinate the project from initial concept to completion.

The exact service depends on the project and the appointment. It may include:

• Assessing the existing property.
• Reviewing planning and building constraints.
• Developing layouts and design alternatives.
• Preparing drawings, specifications and technical documents.
• Coordinating structural engineers and specialist consultants.
• Supporting permit or approval applications.
• Helping contractors understand the proposed work.
• Reviewing quotations and identifying scope gaps.
• Monitoring construction against the approved design.
• Assessing changes, progress and completion.

Hiring an architect does not automatically mean appointing them for every project stage. A homeowner may commission a feasibility study only, a full design package or a complete service covering design, tendering and construction monitoring.

When is an architect legally required?

Legal requirements vary by country, region, municipality and type of property. Before starting work, confirm the applicable planning, building control and professional-signature requirements with the relevant local authority or a qualified professional.

An architect is more likely to be required when the work involves:

• Constructing a new building or major extension.
• Altering load-bearing walls, floors, roofs or foundations.
• Making significant changes to the building envelope.
• Changing the legally authorised use of a property.
• Dividing, combining or substantially reconfiguring dwellings.
• Working on a listed, protected or historically significant building.
• Carrying out work that requires a formal technical project.
• Modifying fire-safety, accessibility or evacuation conditions.
• Making alterations that affect shared or communal building elements.

A permit requirement and an architect requirement are not always the same. Some minor works may need municipal notification but no full architectural project. Other works may require drawings, calculations and documentation signed by one or more qualified professionals.

The safest approach is to define the intended work before requesting quotations from builders. A brief conversation with an architect or local technical adviser can establish whether the project needs formal design documentation.

When is hiring an architect advisable, even if optional?

An architect can add value whenever design choices, technical constraints or coordination problems could affect the success of the project.

When you want to change the layout

Moving kitchens, bathrooms, stairs, partitions or circulation routes can affect:

• Drainage and water services.
• Ventilation.
• Natural light.
• Structural elements.
• Fire separation.
• Accessibility.
• Furniture placement.
• Construction sequencing.

A contractor can price a defined solution, but the architect helps establish whether that solution is functional, compliant and technically feasible.

When the existing building is complex

Older buildings often contain concealed conditions, irregular structures, outdated services or previous alterations that were poorly documented. An architect can organise surveys, identify risks and recommend where specialist investigation is needed.

No professional can eliminate all uncertainty in an existing property. However, a structured pre-construction review can reduce the number of decisions that must be improvised on site.

When several trades must be coordinated

A comprehensive renovation may involve demolition, structure, masonry, plumbing, electrical work, heating, ventilation, insulation, carpentry, finishes and fitted furniture.

Without coordinated drawings and specifications, each trade may interpret the work differently. This can lead to omissions, incompatible installations and repeated work.

When you need reliable contractor quotations

Builders cannot produce comparable prices if they are pricing different assumptions. An architect can prepare information that defines:

• What will be demolished and retained.
• Which materials and finishes are expected.
• What dimensions and performance requirements apply.
• Which items are included in the contractor’s scope.
• Which items will be purchased directly by the client.
• How provisional or uncertain work should be treated.

Better-defined information does not guarantee identical quotations, but it makes differences easier to identify and discuss.

When the budget is limited or tightly controlled

Hiring an architect is not only relevant to high-budget projects. A constrained budget makes prioritisation more important.

An architect can help distinguish between:

• Essential work.
• Compliance-related work.
• Preventive maintenance.
• Functional improvements.
• Optional finishes.
• Items that can be postponed.

The objective is not necessarily to make every item cheaper. It is to allocate available funds to the decisions that provide the greatest functional and technical value.

Why hiring an architect matters

A clearer project scope

Many renovation disputes begin with an incomplete scope. The homeowner assumes an item is included, while the contractor considers it additional work.

Drawings, schedules and specifications create a shared reference for pricing and execution. They also make it easier to record approved changes.

Fewer design changes during construction

Changes made on paper are usually easier to evaluate than changes made after demolition, ordering or installation.

Early design work allows you to compare layouts, materials and technical solutions before they affect labour, procurement and programme.

Better cost control

An architect can align design decisions with the available budget and flag elements likely to increase cost, such as structural intervention, bespoke joinery or complex service relocation.

Cost control still requires disciplined budgeting. The project team should maintain a live record of:

• Original contract value.
• Approved changes.
• Pending quotations.
• Committed purchases.
• Progress payments.
• Forecast final cost.
• Contingency usage.

A construction budgeting platform such as Presuo helps teams keep this information usable during execution, particularly when site decisions and variations begin to affect the original estimate.

Improved coordination

An architect can act as a technical link between the homeowner, builder, engineers, suppliers and authorities. This does not remove the responsibilities of each party, but it reduces fragmented communication.

Independent review

When separately appointed by the homeowner, the architect can review whether work appears consistent with the design and whether requested payments correspond with recorded progress.

This review is not the same as guaranteeing the contractor’s workmanship. The architect’s inspection duties and level of responsibility depend on the agreed service and applicable local rules.

At what stage should you hire an architect?

The best time is usually before you commit to a layout, budget or contractor.

1. Before purchasing a property, when possible

For a property that requires major work, an architect can provide an initial feasibility review. They may identify planning restrictions, structural concerns, access limitations or renovation requirements that affect the purchase decision.

This is not a substitute for a complete building survey, valuation or legal review. Different professionals cover different risks.

2. During scope definition

Explain what is not working, what you want to achieve and what budget constraints apply. Avoid presenting a fixed solution too early unless it has already been technically assessed.

A useful initial brief includes:

• Property type and approximate size.
• Current plans or available documentation.
• Known defects.
• Required rooms and functions.
• Desired finish level.
• Target completion date.
• Available construction budget.
• Items that must remain in use during the work.

3. Before requesting contractor quotations

Contractors should ideally price an agreed design and scope. Requesting quotations too early often produces broad estimates that cannot be compared reliably.

4. Before work starts

The design, key materials, responsibilities and budget should be sufficiently defined before mobilisation. Unresolved details can become urgent site decisions, increasing the risk of delay and unplanned cost.

5. During construction, if necessary

An architect can still be appointed after work has started, particularly when technical problems or disputes arise. However, correcting an unclear or impractical design during construction is generally more disruptive than resolving it beforehand.

How to hire the right architect

Step 1: Define the service you need

Ask whether you need:

• A consultation or feasibility study.
• Concept design.
• Planning or permit documentation.
• Detailed construction drawings.
• Contractor tender support.
• Contract administration.
• Site inspections.
• Completion and handover support.

A narrow appointment may be appropriate for a simple project, while a complex renovation benefits from continuity across stages.

Step 2: Check relevant experience

Look for experience with projects similar in scale, building type and technical complexity. Renovating an occupied apartment is different from designing a detached new-build property.

Step 3: Review the fee proposal carefully

The proposal should explain:

• Scope of services.
• Deliverables.
• Number of design revisions.
• Meetings and site visits included.
• Excluded services.
• Specialist consultants required.
• Payment schedule.
• Treatment of additional work.
• Expected project stages.

Step 4: Discuss budget openly

Provide a realistic figure for the construction work and clarify whether it includes taxes, professional fees, permits, furniture, equipment and contingency.

Hiding the budget does not necessarily produce a more economical design. It can result in proposals that are unsuitable for the available funds.

Step 5: Agree how changes will be managed

Establish who can approve a change, how its cost and programme effect will be recorded and whether work can proceed before written approval.

How much does an architect cost?

Architects use different fee structures. Common approaches include:

• A fixed fee for a defined scope.
• A percentage related to construction cost.
• Hourly or daily rates.
• Fees divided by project stage.
• A hybrid arrangement combining fixed and variable elements.

The total depends on the property, complexity, location, service scope, project duration and level of construction involvement.

Compare proposals based on services and deliverables, not only the headline fee. A low fee may exclude detailed design, tender support, site inspections or change review.

Also confirm whether the quotation includes taxes, travel, printing, surveys, engineering services, permit charges and other third-party costs.

Practical example: architect involvement and budget control

A homeowner plans to renovate an apartment by opening the kitchen, moving a bathroom and replacing all services.

Without coordinated design information, three builders make different assumptions. One includes structural support, another excludes it and the third assumes the wall is non-load-bearing. Their totals appear comparable, but the scopes are not.

An architect reviews the existing layout, coordinates a structural assessment and prepares drawings and a defined work schedule. The contractors then revise their quotations using the same information.

During construction, an unforeseen drainage condition requires a layout adjustment. The team records:

1. The technical reason for the change.
2. The revised drawing.
3. The contractor’s price.
4. The effect on the programme.
5. The client’s written approval.
6. The updated forecast final cost.

This process does not prevent every variation, but it keeps decisions traceable and prevents an on-site instruction from becoming an unexplained invoice at the end of the project.

Common mistakes when appointing an architect

• Hiring the architect after agreeing a price with a contractor based on an undefined scope.
• Assuming every architectural service includes construction monitoring.
• Comparing fees without comparing deliverables.
• Setting a construction budget that excludes professional fees and contingency.
• Approving major design decisions verbally.
• Starting demolition while technical details remain unresolved.
• Expecting the architect to control costs without maintaining an updated project budget.
• Failing to appoint structural or services engineers when specialist input is required.
• Choosing a professional only because they offer the lowest fee.
• Not checking registration, insurance or contractual terms where applicable.

Frequently asked questions

Do I need an architect for a simple refurbishment?

Possibly not. Painting, replacing finishes or renewing fittings without structural or regulatory implications may not require an architect. Local requirements and the actual scope should still be checked.

Do I need an architect to remove a wall?

You need to establish whether the wall is structural and whether the alteration affects fire safety, shared elements or legal approvals. An architect and, where necessary, a structural engineer can assess the proposal.

Can a builder design the renovation?

Some contractors offer design-and-build services. Confirm who is responsible for the design, whether the designer is appropriately qualified and whether the documentation is sufficient for approvals, pricing and execution.

Does an architect guarantee that the project will stay on budget?

No professional can guarantee that an existing-building project will have no unforeseen costs. An architect can improve scope definition, evaluate options and support change control, but the budget must be actively monitored throughout construction.

Should I hire the architect before the builder?

For a project involving substantial design or technical work, usually yes. A contractor can give early cost advice, but a sufficiently developed design is needed before obtaining comparable fixed quotations.

Conclusion

Hire an architect as early as possible when your project involves structural changes, planning or permit requirements, complex layouts, multiple trades or significant financial risk. Even when the appointment is optional, an architect can turn an initial idea into a coordinated scope that builders can price and execute more reliably.

The greatest value comes from combining good design with clear responsibilities, detailed project information and active budget control throughout construction.