Model valuation£417,0008 Busby Close
Local market context
5 Castilian Street, Northampton, NN1 1JS
6 sales on record1 planning record
Estimated value
£306,000
- Since the 2017 sale (£285,000)+7%
- Against NN1 1JS's recent median (£120,000)+155%
Newest record on this page: April 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.
Property type
Mid terrace
Habitable rooms
7
From EPC
Floor area
155 m²
1668 sq ft
Energy rating
D
Score 63
Council tax
Band C
Tenure
Private Rental
About this valuation
How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.
Our estimate
£306,000
- Against its 2017 sale (£285,000)+7%
- Against NN1 1JS's recent median (£120,000)+155%
Your note and figure are shown publicly on this page.
How the estimate is made
The estimate for 5 Castilian Street is modelled from its 155 m² EPC floor area, its 6 recorded sales and recent sales of comparable homes in NN1 1JS. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
What it's based on
Floor area
155 m² from the EPC lodged in November 2023
Sales of this home
6 sales recorded, the latest in 2017
Recent sales in NN1 1JS
5 sales, median £120,000 (2026–2015)
This page or the full report?
| Data | This page | Full report |
|---|---|---|
| Sales | Latest sale shown: April 2026 | Latest available records, read when you order |
| Valuation | Estimate from the last refresh | Analysed against comparable sales |
| Planning | 1 application | Full history, plus nearby schemes |
| Flood risk | Not shown | Included |
Sales history & valuation
Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.
5 Castilian Street has more than tripled in price since its earliest registered sale in 1997.
Sales timeline
1 December 2017Most recent
£285,000
+14.0%over 1 year3 August 2016
£249,995
+20.2%over 2 years21 February 2014
£208,000
+4.0%over 3 years29 July 2010
£200,000
+108.3%over 11 years12 March 1999
£96,000
+15.0%over 1 year17 December 1997
£83,500
Median price across the last 5 sales in NN1 1JS: £120,000 (2026–2015).
Nearby sales in NN1 1JS
Flat, 21 Castilian Street, Northampton, NN1 1JS
Sold Apr 2026
£330,000Flat 1, 9 Castilian Street, Northampton, NN1 1JS
Sold Mar 2025
£225,000Flat 2, 7 Castilian Street, Northampton, NN1 1JS
Sold Jun 2017
£99,450Flat 3, 7 Castilian Street, Northampton, NN1 1JS
Sold Mar 2016
£113,500Flat 1, 7 Castilian Street, Northampton, NN1 1JS
Sold May 2015
£120,000
What this page doesn't show
2 potential issues have already been flagged for 5 Castilian Street, Northampton, NN1 1JS. The detail, evidence and what to ask about it are in the Risks Report.
- Signs of HMO activity in the areaIn report
- Larger development activity nearbyIn report
- Flood risk from rivers, sea and surface waterIn report
- Subsidence and ground-stability signalsIn report
- Refusals, enforcement and big schemes nearbyIn report
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About 5 Castilian Street
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
5 Castilian Street is a mid-terrace house in Northampton (NN1 1JS). It has a recorded floor area of 155 m² (around 1668 sq ft), construction records dating it to 1996-2002 and council tax band C. The latest certificate (November 2023) shows a D (score 63), on the cusp of jumping into the C band. When first surveyed in December 2009 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Very Good and lighting went from Poor to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would lift it to B (score 85), a 2-band jump.
At 155 m² the property is well over the postcode median (54 m² across 13 EPCs), placing it in the larger end of the local stock. On the market in December 2017 and unlisted since — roughly 9 years. Across the public record there are 6 sales, relatively high churn for a single property. Across 1997–2017, sale prices on this property compounded at 6.3% per year. On a £-per-square-foot basis, the last sale (£171/sq ft) was about 31% below the postcode norm. One planning record on file: HMO conversion refused in 2018.
Before you decide
Everything you need to know about 5 Castilian Street
The true value, the hidden risks and the full sale history, in one report.
Signs of HMO activity in the areaLarger development activity nearby
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The data behind every report
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
5 Castilian Street's carbon output runs well above what efficient homes in the postcode produce.
Current Certificate(1 of 4)
Nov 2023
EPC Rating
A
B
C
D
D63
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Poor
CO2 Emissions
6.8 t/year
Occupancy
Rented
Certificate validity
Valid until 9 November 2033
Property Improvements
Changes detected from historical EPC data
Oct 2013from Dec 2009
EPC improved fromE48toC70
Hot Water
Very GoodGood
Hot water efficiency decreased
Wall Insulation
Uninsulated SolidInsulated Solid
External or internal wall insulation added
Roof Insulation
InsulatedWell Insulated
Loft insulation upgraded to recommended levels
Floor Insulation
UninsulatedPartial
Floor insulation added or improved
Low Energy Lighting
20%0%
Low energy lighting percentage decreased
Dec 2021from Oct 2013
Heating Controls
Prog + StatFull
Heating controls upgraded for better temperature management
Windows
SingleFull Double
Single glazing replaced with double or better glazing
Wall Insulation
Insulated SolidInsulated Cavity
Wall insulation upgraded
Low Energy Lighting
0%83%
More low energy lighting installed
Nov 2023from Dec 2021
EPC improved fromC75toD63
Heating Controls
FullProg + Stat
Heating controls changed
Planning history
Applications and permits filed against 5 Castilian Street, Northampton, NN1 1JS, sourced from the PlanIt planning register.
1 application on record at 5 Castilian Street, Northampton, NN1 1JS
1decisions38documents43nearby
Flagged:HMO conversion
- Oct 2018HMOFullOutcome in report
Change of use from dwelling (Use Class C3) to house in multiple occupation for 5 people (Use Class C4) and a self contained basement studio flat
- Documents
- 38 docs on file
- Reference
- N/2017/1421
Unlock 5 Castilian Street, Northampton, NN1 1JS'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 43 notable nearby
- The 38 documents, officer reports & conditions
- What the pattern means for extending or converting here
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The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the Northampton district page.
Crime
571/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Post Office — bus stop.
Closest school
0.8 km
Spring Lane Primary School. 32 schools nearby.
Nearest schools
- Spring Lane Primary SchoolPrimary806m
- Castle AcademyPrimary821m
- Vernon Terrace Primary SchoolPrimary902m
- Northampton International AcademyAll-through985m
Nearest stops
- Post OfficeBus stop55m
- Derngate CentreBus stop72m
- Mercers RowBus stop239m
- Northampton Bus InterchangeBus stop324m
Most reported crime locally
- Violence & Sexual Offences2,940 reports32%
- Anti-social Behaviour1,893 reports21%
- Shoplifting785 reports9%
- Public Order622 reports7%
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
Modelled day and night-time noise levels around NN1 1JS from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
57.0dB
Night-time· 23:00 – 07:00
47.6dB
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
Get a survey for this property
Level 3 Building Survey
Late 20th centuryMid-Terrace HouseEPC DSolid (non-cavity) walls
Because the property has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
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Where every figure above comes from, how current it is and what it can't tell you.
- How the estimate is made
- The estimate for 5 Castilian Street is modelled from its 155 m² EPC floor area, its 6 recorded sales and recent sales of comparable homes in NN1 1JS. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
- Where sold prices come from
- Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 6 sales are recorded for 5 Castilian Street. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
- Reading the EPC
- Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 5 Castilian Street was lodged in November 2023 at band D and is valid until November 2033. 4 certificates are on record, which shows how the home has changed.
- Planning records
- Planning applications are collected from local authority registers through PlanIt. 1 application is matched to 5 Castilian Street. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
- Area figures
- Crime is police-recorded street-level data over the last 16 months, which places each incident at an approximate point. The 32 schools and 30 stops listed are measured in a straight line from NN1 1JS, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
- Council tax band
- 5 Castilian Street is in council tax band C. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
Common questions
The questions buyers, sellers and homeowners most often ask about 5 Castilian Street, Northampton, NN1 1JS. Each answer is also embedded as structured data for search engines.
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