21 Marriott Street, Semilong, Northampton, NN2 6AW
About 21 Marriott Street
21 Marriott Street is a mid-terrace house in Semilong, Northampton, Northampton (NN2 6AW). It has a recorded floor area of 191 m² (around 2056 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (July 2020) shows a D (score 64), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 82), a 2-band jump.
At 191 m² the property is well over the postcode median (143 m² across 12 EPCs), placing it in the larger end of the local stock. One planning record on file: tree works approved in 2021. Past consents include tree works, meaningful when judging how the property has evolved.
Everything you need to know about 21 Marriott Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
21 Marriott Street's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has been extended more than once, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
1 application on record at 21 Marriott Street, Semilong, Northampton, NN2 6AW
- May 2021Tree WorksTreesOutcome in report
T1 Pine - Fell and removal of stump
- Documents
- 5 docs on file
- Reference
- WNN/2021/0082
Unlock 21 Marriott Street, Semilong, Northampton, NN2 6AW's full planning history
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- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 37 notable nearby
- The 5 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
21 Marriott Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£347,000
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 NN2 6AW: £240,000 (2025–2016).
Nearby sales in NN2 6AW
26 Marriott Street, Semilong, Northampton, NN2 6AW
Sold Feb 2025
£125,0002 Marriott Street, Semilong, Northampton, NN2 6AW
Sold Sept 2021
£350,00025 Marriott Street, Semilong, Northampton, NN2 6AW
Sold Sept 2020
£307,10117 Marriott Street, Semilong, Northampton, NN2 6AW
Sold Nov 2018
£240,00022 Marriott Street, Semilong, Northampton, NN2 6AW
Sold Mar 2016
£240,000
Versus other Marriott Street homes
EPC Rating
64 (D)
Street avg 59 (D)
Floor Area
191 m²
Street avg 179 m²
CO₂ Emissions
7.8 t/year
Street avg 8.8 t/year
Habitable Rooms
7 rooms
Street avg 8 rooms
Everything you need to know about 21 Marriott Street
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee

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The neighbourhood at a glance
Crime
27/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Marriott Street — bus stop.
Closest school
0.3 km
Northampton International Academy. 31 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
51.1dB

Night-time· 23:00 – 07:00
41.5dB






