Luke Williamson Architect can provide architectural services from project inception to completion.

For most domestic projects we would provide fixed quotes for our Work Stages A, B & C (updated for 2025). Architectural Services for tendering and during construction are available if requested and quoted separately or based on an hourly rate.

Luke Williamson Architect Ltd Work Stages

Fees

Ours fees start from:

£600 for Work Stages A (measured survey, existing drawings, review of client brief/budget etc.)

£1200 for Work Stage B (proposal options/meetings, Planning drawings and submission etc.)

£1200 for Work Stage C (Building Regulation drawings, construction notes etc.)

The fees above reflect a project involving a storey rear to a house with limited internal changes and relatively local to our office location.

Timescales:

Our typical timescales are noted below:


Work Stage A: Preparation and Measured Survey

1 – 4 weeks

From our initial visit we aim to provide a fee agreement for review within a few days. From appointment we typically have a 2-4 weeks lead-in time before we progress the project and arrange the measured survey.


Work Stage B: Design & Planning

4 - 6 weeks (Design)

Our design process takes between 4-6 weeks, with options being considered and reviewed with our client during that time. Clients are often keen to get a Planning application submitted, however, this is the most creative stage, so an extra week or 2 finalising a scheme is well worth the time.

8 weeks (Planning)

Once submitted the local Council typically decides on an application towards the end of an 8 week review. Assuming the scheme is approved, timescales would move on to Work Stage C.


Work Stage C: Building Regulation Design

4-8 weeks

Preparation of our Building Regulation information for submission and builders quotes takes around 4 weeks. We also liaise with other consultants during this stage, typically a structural engineer, and their input and involvement also takes 2-4 weeks to coordinate and integrate.


Tendering

3 – 4 weeks

Builders often take at least 3-4 weeks to provide quotes.


Construction

3 - 6 months.

This timescale very much depends on the Contractor, however, extensions typically take between 3 to 6 months to complete. Large schemes can take up to a year.

Other Services

As part of our standard services, Luke Williamson Architect undertakes the duties as 'Principal Designer' under Building Regulations and CDM for our Work Stages A, B & C.


The following Stages are optional services that we can provide if requested.

Technical Design

  • Prepare a schedule of works
  • Advise on an appropriate form of Building Contract, its conditions and the responsibilities of the client, the design team and the contractor
  • Identify extent of design work by contractor
  • Prepare documents required for tendering purposes
  • Advise on potential contractors to be invited to tender for the work
  • Invite, appraise and report on tenders and prepare the Building Contract and arrange for it to be signed
  • Provide the contractor with information required for construction
  • Review design work produced by contractor's specialist subcontractors

Construction

  • Visit the site to see that the work is proceeding generally in accordance with Building Contract
  • Certify payments for work carried out or completed. Advise on final cost
  • Provide or obtain 'As Constructed' information showing the building and its services
  • Give general advice on maintenance

Handover & Close Out

  • Make final inspections and advise on resolution of defects
  • Agree final account and issue a final certificate

Want to know more?


We've written a guide about extending your house. Read more about it here:

Guide to extending your house