Mayfair House 11 12, Flat 9, Heene Terrace, Worthing, BN11 3NR
About Mayfair House 11 12
Mayfair House 11 12 is a mid-terrace house in Worthing (BN11 3NR). It has a recorded floor area of 92 m² (around 990 sq ft) and construction records dating it to before 1900. At 92 m² this is the 5th smallest of 9 units on EPC record in Mayfair House 11 12, where floor areas span 78–103 m². The building's EPC ratings span C to B, with this unit at the bottom. The latest certificate (November 2023) shows a C (score 75), near the top of the C band. The rating has held steady at C across 2 certificates since November 2013. Between certificates, wall efficiency dropped from Good to Very Poor and roof efficiency dropped from Very Good to Average.
4 planning records sit against the property, 2 approved, 0 refused. The record references listed-building consent, which constrain future alterations.
Everything you need to know about Mayfair House 11 12
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
Mayfair House 11 12 has multiple listed-building consents on file — alterations need formal heritage approval.
4 applications on record at Mayfair House 11 12, Flat 9, Heene Terrace, Worthing, BN11 3NR
- Nov 2011ConversionFullOutcome in report
Restoration and alteration to the former Mayfair Hotel to form 11 residential apartments.
Listed- Documents
- 46 docs on file
- Reference
- AWDM/0509/11
- More recent applications — locked
- RenovationNov 2014Decision
- RenovationNov 2014Decision
+ 1 more application in the report
Unlock Mayfair House 11 12, Flat 9, Heene Terrace, Worthing, BN11 3NR's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (4 on record)
- All 4 applications on this property in full, plus 7 notable nearby
- The 136 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Mayfair House 11 12 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£328,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in BN11 3NR: £405,000 (2025–2023).
Nearby sales in BN11 3NR
Flat 1, 15 Heene Terrace, Worthing, BN11 3NR
Sold Mar 2025
£405,000Flat 2, 17 Heene Terrace, Worthing, BN11 3NR
Sold Dec 2023
£300,000Flat 3, 10 Heene Terrace, Worthing, BN11 3NR
Sold Nov 2023
£580,00017a, Basement Flat, Heene Terrace, Worthing, BN11 3NR
Sold Mar 2023
£272,500Flat 1, 16 Heene Terrace, Worthing, BN11 3NR
Sold Jan 2023
£455,000
Versus other Heene Terrace homes
EPC Rating for Mayfair House 11 12 runs comfortably ahead of the street norm.
EPC Rating
75 (C)
Street avg 62 (D)
Floor Area
92 m²
Street avg 76 m²
CO₂ Emissions
2.3 t/year
Street avg 3.5 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
Everything you need to know about Mayfair House 11 12
The true value, the hidden risks and the full sale history, in one report.
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Heene Terrace — bus stop.
Closest school
0.8 km
St Mary's Catholic Primary School. 20 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
49.8dB

Night-time· 23:00 – 07:00
38.0dB






