14 Marriott Street, Semilong, Northampton, NN2 6AW
About 14 Marriott Street
14 Marriott Street is an end-of-terrace house in Semilong, Northampton, Northampton (NN2 6AW). It has a recorded floor area of 311 m² (around 3348 sq ft), construction records dating it to before 1900 and council tax band D. The latest certificate (October 2016) shows a D (score 56), a step below the typical UK home. The recommended improvements would push it to C (score 79).
It hasn't traded since August 1998, a hold of 28 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. At 311 m² the property is well over the postcode median (143 m² across 12 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £519,000 sits 574% above the 1998 sale of £77,000. On a £-per-square-foot basis, the last sale (£23/sq ft) was about 75.4% below the postcode norm. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include HMO conversion, meaningful when judging how the property has evolved.
Everything you need to know about 14 Marriott Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
14 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 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,085 · Includes VAT
Planning history
2 applications on record at 14 Marriott Street, Semilong, Northampton, NN2 6AW
- Dec 2014HMOAmendmentOutcome in report
Application for a lawful development certificate for the existing use of premises as a house in multiple occupation
- Documents
- 7 docs on file
- Reference
- N/2014/1249
- More recent applications — locked
- RenovationJan 2026Decision
Unlock 14 Marriott Street, Semilong, Northampton, NN2 6AW's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 37 notable nearby
- The 16 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
14 Marriott Street's modelled value sits at over four times its earliest registered sale price (1998).
£519,000
Modelled from EPC, postcode comparables.
£77,000
Recorded with HM Land Registry.
Sales timeline
6 August 1998Most recent
£77,000
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
14 Marriott Street is notably below the street on price per m².
Price per m²
£248
Street avg £1,500
Floor Area
311 m²
Street avg 166 m²
Habitable Rooms
9 rooms
Street avg 7 rooms
CO₂ Emissions
15.0 t/year
Street avg 8.0 t/year
Everything you need to know about 14 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

Similar properties nearby
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






