Grade II listed · Horsham

Numbers 11 and 12 Including Attached Wall to Number 11 and Summerhouses in Garden of Number 11

Numbers 11 and 12 Including Attached Wall to Number 11 and Summerhouses in Garden of Number 11 is a Grade II listed building in Horsham, first listed on 17 March 1952. It is one of 1,662 Grade II entries among 1,763 listed buildings in Horsham; 2% of Horsham’s current entries were listed before it.

List entry
Field	Value
Name	Numbers 11 and 12 Including Attached Wall to Number 11 and Summerhouses in Garden of Number 11
Grade	Grade II — special interest
List entry number	1353906
Date first listed	17 March 1952
Local planning authority	Horsham
Location	51.06121, -0.32908 (map)
Official record	Historic England list entry 1353906

Planning works on this listed building?

Planium checks which consents Horsham will require for your works on Numbers 11 and 12 Including Attached Wall to Number 11 and Summerhouses in Garden of Number 11, lists what the heritage statement must cover and drafts the application text.

Ask Planium what consent you need

What the grade means for works

Grade II buildings are of special interest and make up over 90% of listed buildings in England. Most alterations, extensions and many internal changes still need listed building consent from the council.

The protection covers the whole building, inside and out, plus fixtures and attached structures. Typical works that need consent: replacing windows or doors, removing walls or historic fabric, changing roof coverings, installing solar panels or external insulation, and adding extensions.

Listed buildings near Numbers 11 and 12 Including Attached Wall to Number 11 and Summerhouses in Garden of Number 11

Name	Grade	Distance
Causeway Lodge	II	12 m
13 and 13A, The Causeway	II	14 m
14, the Causeway	II	26 m
Horsham Museum	II*	30 m
15, the Causeway	II	34 m
16, the Causeway	II	44 m
7 and 8, the Causeway	II	47 m
Former Stables to South of Manor House	II	54 m
17, the Causeway	II	54 m
The Manor House	II*	56 m

Frequently asked questions

Is Numbers 11 and 12 Including Attached Wall to Number 11 and Summerhouses in Garden of Number 11 listed?

Yes. Numbers 11 and 12 Including Attached Wall to Number 11 and Summerhouses in Garden of Number 11 is on the National Heritage List for England as a Grade II listed building, list entry number 1353906, first listed on 17 March 1952. The full list entry with its description and map is on Historic England’s website.

Do I need consent for works to Numbers 11 and 12 Including Attached Wall to Number 11 and Summerhouses in Garden of Number 11?

Works that affect its character as a building of special architectural or historic interest — inside or out — need listed building consent from Horsham, in addition to any planning permission or building regulations approval. Like-for-like repairs often do not, but confirm with the council’s conservation officer before you start.

Source: National Heritage List for England, © Historic England 2026, via planning.data.gov.uk. Contains Ordnance Survey data © Crown copyright and database right. Licensed under the Open Government Licence v3.0. Retrieved 12 October 2026. Local authority assigned from the list entry point. This page is a summary — the legal record is the official list entry.