99 Lower Adelaide Street, Northampton, NN2 6BB
About 99 Lower Adelaide Street
99 Lower Adelaide Street is a one-bedroom end-of-terrace house in Northampton (NN2 6BB). It has a recorded floor area of 200 m² (around 2153 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (April 2026) shows a C (score 73). When first surveyed in June 2009 the rating was F, the property has climbed 3 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Very Poor to Poor and window efficiency went from Poor to Good. This certificate was lodged in the last six months, so the rating reflects current condition.
At 200 m² the property is well over the postcode median (68 m² across 46 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 76% of similar EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. Most recent transfer was August 2025 at £200,000 — fresh data. One planning record on file: HMO conversion approved in 2026. Past consents include HMO conversion, meaningful when judging how the property has evolved. Across 1999–2025, sale prices on this property compounded at 4.4% per year. Today's modelled estimate of £295,000 is 47.5% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£93/sq ft) was about 30.6% below the postcode norm.
What this property has
Inside
- Bedrooms1
- Bathrooms1
Everything you need to know about 99 Lower Adelaide Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Certificate validity
Valid until 13 April 2036
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
Heating controls upgraded for better temperature management
Hot water system changed
High performance glazing installed
Wall insulation improved
Loft insulation installed or upgraded to 250mm+
Floor insulation added or improved
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 £885 · Includes VAT
Planning history
1 application on record at 99 Lower Adelaide Street, Northampton, NN2 6BB
- Feb 2026HMOFullOutcome in report
Internal alterations and reconfiguration to convert an existing 5-bedroom HMO into a 6-bedroom HMO.
- Documents
- 9 docs on file
- Reference
- 2025/3382/FULL
Unlock 99 Lower Adelaide Street, Northampton, NN2 6BB's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 37 notable nearby
- The 9 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Sale price has grown by over 3x since 1999.
£295,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.4% per year over 26 years.
£200,000
Growth on file: 4.4% per year over 26 years.
Sales timeline
17 August 2025Most recent
£200,000
+29.9%over 9 years23 December 2015
£154,000
+21.0%over 6 years30 October 2009
£127,250
+97.3%over 10 years29 July 1999
£64,500
Median price across the last 5 sales in NN2 6BB: £180,000 (2026–2025).
Nearby sales in NN2 6BB
140 Lower Adelaide Street, Northampton, NN2 6BB
Sold Mar 2026
£100,000142 Lower Adelaide Street, Northampton, NN2 6BB
Sold Nov 2025
£180,000105 Lower Adelaide Street, Northampton, NN2 6BB
Sold Sept 2025
£176,00072 Lower Adelaide Street, Northampton, NN2 6BB
Sold Apr 2025
£190,000120 Lower Adelaide Street, Northampton, NN2 6BB
Sold Mar 2025
£181,000
Versus other Lower Adelaide Street homes
EPC Rating for 99 Lower Adelaide Street runs comfortably ahead of the street norm.
Price per m²
£1,000
Street avg £2,009
Floor Area
200 m²
Street avg 74 m²
Habitable Rooms
7 rooms
Street avg 4 rooms
CO₂ Emissions
4.7 t/year
Street avg 3.8 t/year
Everything you need to know about 99 Lower Adelaide Street
The true value, the hidden risks and the full sale history, in one report.
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The neighbourhood at a glance
Crime
373/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Lower Hester Street — bus stop.
Closest school
0.3 km
Northampton International Academy. 28 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
53.1dB

Night-time· 23:00 – 07:00
43.8dB






