REAR EXTENSION PROJECT PACK

Planning a rear extension? Start with the right information.

A practical downloadable guide for UK homeowners considering a rear extension. Understand the key planning considerations, likely costs, design decisions, common risks and the steps to consider before moving forward.

Designed to help you research your project, compare options and make better informed decisions before spending significant money on design or construction.

Buy & Download Pack

Digital PDF • UK-focused guidance • Download after purchase

What this Pack helps you understand

A rear extension can affect planning, budget, layout, structure and how your home works day to day. This Pack brings the main early-stage considerations together in one place, helping you understand the questions to explore before progressing further.

Planning & Permissions

Understand the main planning routes that may apply to a rear extension, including permitted development and when a planning application may need to be considered.

Explore: permitted development • planning permission • common constraints

Costs & Budget

Explore the main factors that can influence the cost of a rear extension, helping you build a more realistic early-stage budget and understand where additional costs can arise.

Explore: build costs • professional fees • specifications • contingency

Design & Layout

Consider how a rear extension could change the way your home works, including room layout, natural light, access to the garden and the relationship between existing and new spaces.

Explore: layout options • natural light • kitchen planning • indoor-outdoor connection

What’s inside the Rear Extension Pack

The Pack brings together the key information you need to begin researching a rear extension, organised into practical sections you can refer back to throughout the early stages of your project.

Rear extension feasibility — the main factors that can influence what may be achievable.
Planning & permitted development — key routes, limitations and questions to investigate.
Costs & budgeting — indicative cost considerations, professional fees and contingency.
Design & layout — space planning, natural light, kitchen layouts and garden connections.
Technical considerations — structure, drainage, boundaries and other common project constraints.
Project risks — issues worth identifying before committing significant money.
Next-step checklist — a practical sequence for progressing your research and project planning.

Preview the Pack

Take a look inside the Rear Extension Pack before you buy. The Pack is designed to make complex project information easier to understand, with practical guidance, diagrams, examples and checklists.

Example pages from the BetterPlanHomes Rear Extension Pack showing floor plans, cost information and project guidance

A practical guide you can refer back to clear, visual information

Example layouts, Programme, cost information and practical checklists help turn complex project topics into informatc is easier to understand and use.

Built for early stage decisions

The Pack is designed for the research and feasibility stage. It helps you identify questions, considerations and potential risks before progressing into detailed professional design or construction work.

Is this Pack right for your project?

The Rear Extension Pack is designed for UK homeowners who are considering extending the rear of their home and want to understand the key issues before committing significant money to professional design or construction.

This Pack is for you if you’re:

Considering a single-storey rear extension
Exploring whether extending could work for your home
Comparing extension ideas before appointing professionals
Trying to understand likely costs and budget considerations
Researching planning and permitted development
Preparing to speak with an architect, designer or builder
Looking for a clearer starting point before making major decisions

Get the Rear Extension Pack

Get instant access to the complete digital Pack and start researching your rear extension with greater clarity.