Pricing Guide
Below is a guide to approximate costs for extensions, loft conversions, new-build houses, and other architectural services. These are intended as rough guidelines only – the final fee will depend on your project’s size, complexity, and specific requirements.
Each stage is priced individually, so you can choose only the services you need – from a single planning application to a full architectural service.
For a tailored quote, get in touch with details of your project, and we’ll get back to you as soon as we can.
| Design Stages Overview | What's Involved |
|---|---|
| Stage 1: Preparation & Brief | Preparation of drawings and a 3D model of your existing home and site |
| Stage 2: Concept Design | Production of 2–3 conceptual designs in plan and 3D to explore your ideas |
| Stage 3: Spatial Coordination (Planning Application) | Full planning drawings, 3D views, and Design & Access Statement |
| Stage 4: Technical Design (Building Regulations) | Technical drawings and coordination with Building Control and Structural Engineer |
| Stage 5: Construction Drawings | Finalised drawings for your builder/contractor |
| Extensions and Loft Conversions | Fee (from) |
|---|---|
|
Planning Application (Stages 1–3) Includes preparation, concept design, full planning application & submission |
£1280 |
| Stage 1: Preparation & Brief | £320 |
| Stage 2: Concept Design | £320 |
| Stage 3: Spatial Coordination (Planning Application) | £640 |
| Stage 4: Technical Design (Building Regulations) | £960 |
| Stage 5: Construction Drawings | £320 |
| New Build Houses | Fee (from) |
|---|---|
|
Planning Application (Stages 1–3) Includes preparation, concept design, full planning application & submission |
£2240 |
| Stage 1: Preparation & Brief | £640 |
| Stage 2: Concept Design | £640 |
| Stage 3: Spatial Coordination (Planning Application) | £960 |
| Stage 4: Technical Design (Building Regulations) | £1280 |
| Stage 5: Construction Drawings | £640 |
| Other Services | Fee (from) |
|---|---|
| 3D SketchUp Model | £320 |
| 3D Architectural Renderings | £80/view |
| Building Regulations Drawings | £960 |
| Interior Layout Design | £640 |
What Affects Pricing
Project size, location, and complexity
Planning constraints (conservation areas, listed buildings)
Speed of delivery
Number of revisions or changes
Important Notes
We recommend getting a professional measured, topographical, and building survey carried out before starting. The survey acts as a foundation for all design stages, improves the quality of your planning application, and ensures accuracy, which is especially important during the technical and construction stages, to help avoid issues later on. A professional survey can cost anywhere between £500 and £2000, depending on your property’s size, location, and complexity. For assistance with finding a surveyor or guidance on the process, feel free to contact us – we’re happy to help ensure your project gets off to the right start.
