Architectural design and planning support for homeowners, property developers and businesses in Castle Point.

We work with briefs across Benfleet, Thundersley, Hadleigh and Canvey Island. Horizon Architecture provides design, planning drawings and technical coordination for residential and commercial projects. We serve the area by arrangement; this page does not describe a separate local office.

Planning authority: Castle Point Borough Council

Check the exact property address and planning authority before preparing your submission. Postcodes and postal town names do not always identify the local planning boundary.

Check the current Castle Point application checklist

Castle Point publishes a local validation checklist explaining the drawings and supporting information needed for a valid planning application. The council’s page identifies its updated final checklist following a 2026 consultation. Use the version available at submission, rather than an old checklist copied from a previous job.

Official Castle Point Borough Council guidance and records · Source reviewed 18 October 2026.

Preparing a useful first brief

For a Canvey Island, Benfleet or Hadleigh property, include the full site address and any previous decision notice with your enquiry. We can establish the relevant authority and flag site-specific checks before preparing a proposed layout.

Architectural services

Explore our house extension design, loft conversions, new build architecture, interior design and Building Regulations drawing packages. For an existing refusal, see our planning refusal review service.

From your brief to a coordinated drawing package

  1. Review the property: confirm the site address, planning history, available survey and intended use.
  2. Explore the design: compare practical layout options, access, daylight and the relationship with neighbouring properties.
  3. Prepare the submission: agree the consent route and coordinate relevant drawings and specialist reports.
  4. Develop the technical design: prepare the agreed Building Regulations and construction information, coordinated with the structural engineer and other consultants.

Your appointment defines the services included. Statutory application charges, surveys and specialist consultant fees are identified separately. Council approval is an independent decision and cannot be guaranteed.

Questions about a project in Castle Point

Can you prepare an extension or loft conversion proposal?

Yes. We start with the available plans, your brief and the site constraints, then agree whether a measured survey, planning submission and technical package are required.

Are planning drawings enough for construction?

The planning and technical stages serve different purposes. Your quotation should identify the construction details, engineering and other consultant inputs needed for the intended work.

Explore other areas

All Essex councils · All London boroughs · View our Essex residential project

Tell us about your property

Send your site address, photographs, existing plans if available, a short brief and your intended timetable. We will review the information and explain the next step and scope of a quotation.

Discuss your project

info@horizonarchitecture.uk · +44 (0) 7407 699 283

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