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Architectural Designers

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An architectural designer produces the same kind of output an architect produces on a typical house project: survey drawings, a design, a planning submission and a technical package for building control. The difference is not the drawings. It is that the words architectural designer, architectural consultant and architectural technologist are not protected by law, so the title on the business card is doing none of the work that the word architect does.

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That is not a criticism of the trade. Plenty of very good householder work is designed by people who are not on the Architects Register, and for a rear extension or a loft conversion a designer who does fifty of them a year may be better placed than a practice that does none. But it changes how you buy. With an architect, the regulator has already checked the qualification and imposed a code. With an architectural designer, you are doing that checking yourself.

ARB has been explicit about the boundary. Its title protection work covers the word architect only; it has confirmed it cannot investigate the use of related terms such as architecture or architectural, and that someone calling themselves an architectural consultant or architectural assistant falls outside its regulatory activities. So the questions below are about evidence rather than titles: what they have designed, who checks it, what insurance stands behind it and who carries the duties once the job starts.

Which words in this trade the law protects, and which it does not

Only architect is reserved. The Architects Act 1997 restricts practising or carrying on business under a name, style or title containing that word to people on the Architects Register, and ARB's published position is that it is unable to investigate the use of related terms such as architecture or architectural because the legislation does not cover them. Architectural designer, architectural consultant, architectural assistant, architectural services and building designer are all outside the statute.

Architectural technologist is a different case again. It is also unprotected in law, but there is a professional institute behind it whose chartered grade carries the post-nominal MCIAT, awarded after an assessment the institute sets. So a chartered architectural technologist has been through something, even though the words themselves could in principle be used by anyone. That makes the institute's own membership record, rather than the job title on the website, the thing worth asking about.

ARB carries out a substantial number of misuse-of-title investigations every year, which tells you something useful in the opposite direction: if a designer were prepared to describe themselves as an architect when they are not registered, that is a criminal matter and a clear reason to walk away. A designer who describes themselves accurately is not doing anything wrong at all.

Architect, architectural technologist or architectural designer

  • Architect: on the ARB Register, bound by the Architects Code and its 2025 standards, regulated by a statutory body, and the only one of the three whose title you can verify against an official list.
  • Chartered architectural technologist: assessed by their institute to MCIAT grade, and typically strongest on technical detailing, construction sequencing and building regulations packages.
  • Architectural designer: an unregulated description that can cover anyone from an experienced former practice technician to someone who bought drawing software last year.
  • For a straightforward householder extension with no heritage constraint, all three routes routinely produce a consentable scheme.
  • For a listed building, an unusual site, a contract you want administered, or a design you want argued at appeal, the regulated route gives you a complaint mechanism you would otherwise have to create by contract.
  • Whichever you choose, the local planning authority and the building control body apply exactly the same tests to the drawings — they do not care who drew them.

What an architectural design service normally includes

  • A measured survey of the existing building and, where the scheme touches the boundary or the levels, a topographical survey of the plot.
  • Feasibility sketches tested against permitted development limits or against the likely planning position, before anyone commits to a full application.
  • The planning drawing set: location plan, existing and proposed site plan, and existing and proposed floor plans and elevations to identified scales.
  • The building regulations set, which is a different document: construction details, insulation build-ups, structural coordination and the specification the builder actually prices.
  • Coordination with a structural engineer for beams, foundations and openings, which is a separate appointment and a separate fee.
  • Optional extras that are often assumed rather than agreed: discharging planning conditions, answering building control queries and issuing revised drawings during construction.

Competence is now a legal test in England, whoever draws the plans

Since 1 October 2023 the Building Regulations in England have named dutyholders for building work: the client, including a domestic client, the principal designer and the principal contractor, alongside duties on designers and contractors generally. GOV.UK guidance states that individuals must be able to demonstrate they are competent to carry out their duties and undertake the work, and that organisations must demonstrate organisational capability through policies, procedures, systems and resources.

Where more than one designer is working on a project, a principal designer must be appointed in writing to be in control of the design work and must have the competence to do it. Dutyholders must stay within the limits of their competence and decline appointments for work they are not competent to handle, and the client must take reasonable steps to confirm that the people they appoint are competent.

The practical effect for a homeowner buying design work from an unregulated designer is that the law has given you a question to ask that does not depend on a title: what is your evidence of competence for this type of work, and who is the principal designer on my project. Wales, Scotland and Northern Ireland run their own building control systems, so check the position where your house is before assuming the English dutyholder wording applies.

Insurance is the check that replaces the missing title

Professional indemnity insurance responds to claims arising from negligent design or advice, as distinct from public liability, which covers injury and damage, and from a contractor's workmanship warranty, which covers the building work itself. ARB tells the public that registered architects maintain professional indemnity insurance, and the Institution of Structural Engineers publishes business support on the subject for its members. There is no equivalent requirement on an unregulated designer at all.

So ask for the certificate, not for reassurance. Look at the name of the insured entity and check it matches the business you are contracting with, look at the limit of indemnity per claim, and look at the expiry date. Because this cover works on a claims-made basis, the policy that matters is the one running when a problem surfaces, which may be years after the drawing was issued — so also ask what happens if the practice closes.

Then put the appointment in writing. A one-page scope that lists which drawings you are getting, which submissions are included, how many revisions are covered and what happens if the scheme is refused is worth more on a domestic job than any logo on the letterhead.

The failure patterns that are specific to unregulated design

  • The designer describes themselves as an architect on a website or a quote, which is an offence under the Architects Act 1997 and tells you everything about how they handle the rest of the rules.
  • There is no professional indemnity cover at all, so a design error that costs thousands to correct has nowhere to go but a small claim against a dissolved company.
  • Planning drawings are produced with no building regulations set behind them, and the homeowner discovers at tender that half the information is missing.
  • The design assumes a permitted development right that the property does not have, because an earlier extension already used up the allowance.
  • Nobody is appointed as principal designer on a project with several designers, which in England leaves a duty unassigned under the post-2023 regime.
  • The fee looks low because it stops at submission, and every planning condition, amendment and building control query is charged as an extra.

What drives an architectural design quote, and how LokalMatch fits in

The main variables are the amount of survey work needed, whether the scheme goes through permitted development or a full planning application, whether a building regulations package is included or only planning drawings, how many design revisions are bundled, and whether structural engineering is inside or outside the fee. Heritage constraints, awkward levels, a tight urban site and anything that needs consultation with a neighbouring owner all add design hours. Quotations that look wildly different usually differ in scope rather than in rate, so line the scopes up before you line the numbers up.

LokalMatch is only the introduction. Describe the job once, add your postcode, and designers who work in your area contact you. There is no charge to homeowners; the professionals pay for the enquiries they receive. LokalMatch does not draw plans, does not set fees and does not vet, rank or recommend any of the people who reply, so the insurance and competence checks described above are yours to make before you appoint.

Architectural Designers: frequently asked questions

Is architectural designer a protected title?

No. Only the word architect is reserved, under section 20 of the Architects Act 1997. ARB's published position is that it cannot investigate the use of related terms such as architecture or architectural, and that someone calling themselves an architectural consultant or architectural assistant is outside its regulatory activities. Anyone may lawfully offer architectural design services.

Can an architectural designer submit a planning application?

Yes. Nothing in planning law restricts who may prepare or submit an application; the local planning authority validates the application against the information requirements, not against the author's qualifications. The same is true of a building control application. What changes with an unregulated designer is your own due diligence, not the authority's.

What is a chartered architectural technologist?

Someone who has passed their institute's professional assessment and uses the letters MCIAT. The words architectural technologist are not protected in law — unlike architect, which is reserved by the Architects Act 1997 — so the meaningful check is the institute's membership record rather than the job title on the website.

Do I need an architect for a rear extension?

Not as a matter of law. Building control and planning apply the same tests whoever prepared the drawings. An architect brings a statutory register, a published code and a regulator; a good designer or technologist brings volume experience of exactly this kind of job. Choose on evidence of relevant work, insurance and a written scope.

Who is the principal designer on my extension?

In England, where more than one designer is working on the project, a principal designer must be appointed in writing to be in control of the design work, under the dutyholder regime that applies to building work from 1 October 2023. Ask your designer to confirm in writing who holds that role on your job. Scotland, Wales and Northern Ireland run separate building control systems, so check locally.

What insurance should an architectural designer have?

Professional indemnity insurance, which covers negligent design and advice, and is separate from public liability. There is no legal requirement on an unregulated designer to hold it, so ask to see the certificate, check the insured name matches the business you are contracting with, and note the limit and the renewal date.

Sources

  1. Architects Act 1997, section 20 (use of the title architect), legislation.gov.uk
  2. Architects Registration Board: policy on misuse of the title architect (related terms such as architecture and architectural are not covered)
  3. Architects Registration Board: what ARB does to regulate use of the title architect
  4. GOV.UK: design and building work — meeting building requirements (dutyholders, principal designer and competence in England)
  5. The Building Regulations etc. (Amendment) (England) Regulations 2023, legislation.gov.uk
  6. Architects Registration Board: before hiring an architect (professional indemnity insurance)

Written by the LokalMatch editorial team. Last reviewed 21 September 2026. How we write and check our guides

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What affects the cost of home design

Prices depend on the details of your project. We only publish price ranges when they’re backed by real LokalMatch quote data or reliable sources. Until then, here’s what usually changes the price:

  • Type of professional and service needed
  • Size and complexity of the project
  • Level of detail in drawings or reports
  • Number of site visits and meetings
  • Number of design revisions
  • Help with permits or contractor selection

How to compare architectural designers before you hire

  • Match the professional to the job: an architect or engineer where the work requires one, a designer for layout and finishes, or an inspector for a condition report.
  • Ask whether they are licensed or certified for this type of work in your area, where that applies.
  • Review a portfolio or sample report that's similar to your project.
  • Get a written agreement that spells out the services, deliverables, number of revisions and how fees are charged.
  • Ask whether their drawings will be suitable for a permit application, and whether they'll help with it.

Questions to ask architectural designers before you hire

  • Are you licensed or certified for this type of work in my area?
  • What exactly will you deliver: drawings, specifications, a report or site visits?
  • How are your fees charged: a fixed fee, hourly or based on the project cost?
  • How many rounds of revisions are included?
  • Will your drawings be ready for a permit application, and will you submit it?
  • Can I see a sample of a similar project or report?
  • Do you carry professional liability insurance?

When to call a pro for home design

  • Before removing or moving a wall that may be load-bearing
  • Before buying a home, to understand its condition
  • When a permit application needs drawings

Home design permits and local rules

Some home design work needs a permit or has to meet local bylaws. Rules vary by municipality, so ask your pro whether a permit is needed and who will apply for it — and check with your city or town if you’re unsure.

Permits and licensing

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