The 8 key stages of preparation before a house extension

A step-by-step guide to preparing for a home extension in Newcastle and the North East.

A well-designed home extension can transform the way you live — but the success of any project lies in the preparation. At Acre Design, we take our clients through a clear and structured process that ensures every stage is considered, every detail is captured, and every risk is minimised. Here are the eight essential stages of preparation before extending your home.

1. Choosing the right architectural designer

The foundation of a successful project is the relationship you build with your design team. Choose a practice with local expertise, proven experience, and a genuine understanding of your lifestyle. At Acre, we pride ourselves on combining technical rigour with creativity, guiding you from first idea through to completion.

2. Measured survey

Before design work can begin, a detailed survey of your home and garden is undertaken. This records every room dimension, boundary, window, service and level — providing the accurate foundation for thoughtful, practical design and smooth approvals.

3. First design proposal

The design process begins with a collaborative discussion about how you live, what you want to achieve, and your budget. From cinema rooms to open-plan living spaces, we refine ideas until the plans reflect both your aspirations and practical requirements. Our clients value the ability to visualise their home in 3D before committing to a final scheme.

4. Planning application

Once the design is agreed, we prepare a full planning submission including floorplans, elevations, roof and site plans, plus any specialist reports required. With over a 95% approval rate, Acre’s attention to detail gives clients the best chance of a smooth and successful outcome.

5. Technical drawings and Building Control

Planning drawings show what will be built. Technical drawings set out how it will be built. We specify every material, junction, and system to satisfy Building Control and to give contractors a precise instruction manual — reducing risk, cost, and delays on site.

6. Party wall agreements

If your extension affects a boundary wall, party wall notices must be issued to neighbours. We manage this process with clarity and professionalism, ensuring you stay compliant while keeping neighbour relations positive.

7. Appointing a builder

We recommend trusted contractors with whom we’ve delivered successful projects before, but we’re equally happy to collaborate with your preferred builder. Pre-start meetings ensure everyone is aligned on scope, schedule, and expectations before work begins.

8. Ready to build

With planning approval, building regulations sign-off, party wall agreements in place, and a trusted builder lined up, your project is ready to move seamlessly into construction. At this stage, you can relax knowing that every detail has been planned and accounted for.

At Acre Design, we believe preparation is the key to a stress-free build. From first sketch to handover, we are your partner in creating a home you will love for years to come.

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