133 homes in NN1 1AG
NN1 1AG is a postcode in Castle, Northampton, with 133 homes. Estimated 2026-27 council tax in Castle (West Northamptonshire) is about £154 a month for a couple. Each address has a free home report, an official EPC certificate and a recent-sales summary — a tidy way to get to know any home on this street before you knock on the door, view the property or move in next door.
Postcode
NN1 1AG
NN1 1AG
133 homes indexed
Postcode area
Free home reports
EPC, sales history, neighbourhood
Energy register
NN1 1AG in numbers
Open data on homes and council tax in NN1 1AG, from the EPC register and ONS, Ofgem and Census data.
Homes with an energy certificate
99
Distinct homes (UPRNs) on the EPC register
Source: EPC register, certificates to October 2026
Most common EPC rating
B
67 of 99 homes
Source: EPC register, certificates to October 2026
Median floor area
62 m²
Across 99 homes
Source: EPC register, certificates to October 2026
| Rating | Homes | Share |
|---|---|---|
| A | 0 | 0% |
| B | 67 | 68% |
| C | 30 | 30% |
| D | 2 | 2% |
| E | 0 | 0% |
| F | 0 | 0% |
| G | 0 | 0% |
| Latest certificate for each home. Source: EPC register, certificates to October 2026 | ||
| Type | Homes | Share |
|---|---|---|
| Flat | 83 | 84% |
| House | 16 | 16% |
| Source: EPC register, certificates to October 2026 | ||
| Date | Street address | Price |
|---|---|---|
| 17 Mar 2023 | Bloomsbury House, 27 Guildhall Road | £133,000 |
| 2 Dec 2022 | Bloomsbury House, 27 Guildhall Road | £152,500 |
| 28 Oct 2022 | Bloomsbury House, 27 Guildhall Road | £125,000 |
| 23 Aug 2022 | Bloomsbury House, 27 Guildhall Road | £155,000 |
| 30 Jun 2022 | Bloomsbury House, 27 Guildhall Road | £172,000 |
| Source: HM Land Registry Price Paid Data, sales to September 2026 | ||
Council tax (2026-27)
Estimated council tax in the Castle ward of West Northamptonshire. These are ward averages, not the bill for a specific home.
Council
West Northamptonshire
Ward: Castle
Estimate for a couple
£154 a month
£1,846 a year, ward average
Source: Estimated from ONS, Ofgem and Census data.
Most common council tax band
Band A
£1,657.77 a year in West Northamptonshire
Source: Estimated from ONS, Ofgem and Census data.
| Household | A month | A year |
|---|---|---|
| Single person* | £115 | £1,384 |
| Couple | £154 | £1,846 |
| Family | £154 | £1,846 |
| Single parent* | £115 | £1,384 |
| *Includes the 25% single person discount. Ward averages, not a bill for a specific home. Estimated from ONS, Ofgem and Census data. | ||
| Band | A year |
|---|---|
| A | £1,657.77 |
| B | £1,934.07 |
| C | £2,210.36 |
| D | £2,486.66 |
| E | £3,039.25 |
| F | £3,591.84 |
| G | £4,144.43 |
| H | £4,973.32 |
| Council's annual charge per band, before discounts. Estimated from ONS, Ofgem and Census data. | |
Sale prices are standard residential sales (HM Land Registry category A), each sale counted once. Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0. EPC figures use the latest certificate for each home on the Energy Performance of Buildings Register. Council tax figures are ward averages weighted by the ward's band mix, not a bill for a specific home. Estimated from ONS, Ofgem and Census data.
Addresses on this postcode
About the area
Recent sales near NN1 1AG
97 ROE ROAD
£335,000
Sold 2026-09-29
17 BURDOCK WAY
£165,750
Sold 2026-09-28
26 BRACKLEY ROAD
£350,000
Sold 2026-09-25
32 PARK AVENUE
£381,500
Sold 2026-09-25
39 TANTERS ROAD
£397,500
Sold 2026-09-25
Energy performance for NN1 1AG
Energy performance
Official EPC reports for NN1 1AG
Find the energy certificate for any home on this postcode on the government register. Free, official, and updated whenever a property is re-assessed.
