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Get started21a, Gratwicke Road, Worthing, BN11 4BH
About 21a
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
21a is a semi-detached house in Worthing (BN11 4BH). It has a recorded floor area of 36 m² (around 388 sq ft) and construction records dating it to 2024. The latest certificate (April 2025) shows a C (score 78), near the top of the C band. When first surveyed in July 2010 the rating was G, the property has climbed 4 bands since. Between certificates, wall efficiency went from Poor to Good, window efficiency went from Very Poor to Very Good and hot-water efficiency went from Average to Very Good. At 36 m² this is the 13th smallest of 56 units on EPC record in the building, where floor areas span 11–185 m². The building's EPC ratings span G to B across 56 units on file.
Today's modelled estimate of £198,000 is 45.8% below the 2019 sale of £365,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£942/sq ft) was about 385.4% above the typical sold price in the postcode. At 36 m² it sits well below the postcode median (67 m² across 55 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 71% of similar EPCs). Last sale on file: £365,000 in December 2019.
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
21a's carbon output is low for the local stock.
Current Certificate(1 of 3)
Apr 2025
EPC Rating
A
B
C
C78
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Very Good
Windows
Very Good
CO2 Emissions
1.0 t/year
Occupancy
Owner Occupied
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
21a valuation sits well clear of the typical sold price in this postcode.
Current estimate
See how we calculated this£198,000
Modelled from EPC, postcode comparables.
Last sold (2019)
£365,000
Recorded with HM Land Registry.
Sales timeline
Launch offer · 33% off
The complete analysis of 21a, Gratwicke Road, Worthing, BN11 4BH
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
An AI-written breakdown of everything that matters
Versus other Gratwicke Road homes
Four headline reads against 44 similar flats on this street, drawn from the latest EPC and Land Registry data.
EPC Rating for 21a runs comfortably ahead of the street norm.
Price per m²
£10,139
Street avg £3,569
Floor Area
36 m²
Street avg 53 m²
CO₂ Emissions
1.0 t/year
Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the Worthing district page.
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Thorn Road — bus stop.
Road noise across the postcode
Modelled day and night-time noise levels around BN11 4BH from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
51.8dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 50 points of interest in total.
Common questions
The questions buyers, sellers and homeowners most often ask about 21a, Gratwicke Road, Worthing, BN11 4BH. Each answer is also embedded as structured data for search engines.
