12a, Garden Flat, Northumberland Terrace, Plymouth, PL1 3DD
About 12a
12a is a mid-terrace house in Plymouth (PL1 3DD). It has a recorded floor area of 83 m² (around 893 sq ft) and construction records dating it to 1900-1929. The latest certificate (August 2022) shows a C (score 74). When first surveyed in December 2008 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Very Poor to Good and hot-water efficiency went from Average to Good.
Last sold in July 2016, so it's been off the market for around 10 years. Across the public record there are 4 sales, relatively high churn for a single property. Across 2009–2016, sale prices on this property compounded at 11.7% per year. Today's modelled estimate of £192,000 is 23.9% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£173/sq ft) was about 27.6% above the typical sold price in the postcode.
Energy performance
EPC Rating
Certificate validity
Valid until 9 August 2032
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
Single glazing replaced with double or better glazing
Hot water efficiency decreased
Wall insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
12a has no planning applications on record.
But the area is active
16 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
12a has more than doubled in price since the earliest registered sale in 2009.
£192,000
Modelled from EPC, postcode comparables and a sale-price growth of 11.7% per year over 7 years.
£154,950
Growth on file: 11.7% per year over 7 years.
Sales timeline
14 July 2016Most recent
£154,950
+7.6%over 8 months10 November 2015
£144,000
+9.9%over 5 years30 March 2010
£131,000
+87.3%over 11 months14 May 2009
£69,950
Median price across the last 5 sales in PL1 3DD: £175,000 (2024–2021).
Nearby sales in PL1 3DD
Basement Flat, 10 Northumberland Terrace, Plymouth, PL1 3DD
Sold Nov 2024
£410,0006 Northumberland Terrace, Plymouth, PL1 3DD
Sold Apr 2024
£400,000Ground Floor Flat, 3 Northumberland Terrace, Plymouth, PL1 3DD
Sold Nov 2023
£162,000First Floor Flat, 4 Northumberland Terrace, Plymouth, PL1 3DD
Sold Sept 2021
£151,0001 Northumberland Terrace, Plymouth, PL1 3DD
Sold Jun 2021
£560,000
Versus other Northumberland Terrace homes
Years Held for 12a runs comfortably ahead of the street norm.
Price per m²
£1,867
Street avg £1,986
Floor Area
83 m²
Street avg 69 m²
Habitable Rooms
4 rooms
Street avg 3 rooms
CO₂ Emissions
2.3 t/year
Street avg 2.3 t/year
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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
521/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
West Hoe Park — bus stop.
Closest school
0.4 km
St Andrew's Cof E VA Primary School. 30 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
49.1dB

Night-time· 23:00 – 07:00
38.4dB







