LS18 PROJECT PREPARATION BRIEF
Adding family space in Horsforth while keeping a usable house

Prepared by ATR Developments Limited. You can use this with your designer or builder.
These are preparation prompts, not a property survey or a permissions decision.

Project address: ______________________________
Proposed work: ________________________________
Intended use / occupation: ____________________

For a Horsforth extension, agree which rooms must remain usable during the build and where construction access can run. A design that works well when finished may require a temporary kitchen, a different entrance or a period away from the house while the old and new spaces are connected.

DECISIONS TO RESOLVE

1. Choose the connection stage
Ask when the existing external wall would be opened and what needs to be complete beforehand. This makes the period of greatest disruption visible when comparing programmes.
[ ] Gather: A proposed opening plan and the household’s occupancy needs.
Notes: ________________________________________

2. Keep boundaries in the survey
Record neighbouring walls, garages and windows alongside the proposed footprint. Use the party wall guidance to identify whether specialist advice is needed; do not assume every extension has the same notice requirements.
[ ] Gather: A boundary survey and photographs of adjoining structures.
Notes: ________________________________________

ADDRESS CHECKS
[ ] Confirm the authority using the full address: https://www.gov.uk/find-local-council
[ ] Establish applicable permissions with the relevant authority and advisers.

PRIMARY RESOURCES

Local maps & character documents
Selected links from the council’s directory. Use the named area and boundary to check relevance to your property; these documents do not apply to the whole postcode.
Horsforth: appraisal document (PDF 5MB): https://www.leeds.gov.uk/sites/default/files/files-imported/0aa1f49b521d13ea056e8773c4eef95541709e2b6ca6531dc196a083c6b2ba1c.pdf
Horsforth Cragg Hill: appraisal document (PDF 2.1MB): https://www.leeds.gov.uk/sites/default/files/files-imported/6097d6f21a1670ca9478f5d402c4e836a39ea03be7a487d4dca7cd1038c23fee.pdf

Leeds City Council
Find earlier decisions and check the relevant conservation boundary for your address.
Planning history: https://www.leeds.gov.uk/planning/planning-permission/view-and-comment-on-planning-applications
Conservation maps & appraisals: https://www.leeds.gov.uk/planning/conservation-protection-and-heritage/conservation-area

GOV.UK party wall guidance
Check the type and position of the proposed work before deciding whether notice or specialist advice is required.
Party walls and building work: https://www.gov.uk/party-walls-building-works

Resource review: 2026-10-16
No project cost, permission or availability is confirmed by this checklist.