Rental yields & buy-to-let in NN1: Northampton
The indicative gross rental yield in NN1 (Northampton) is 4.1%. That pairs the ONS mean private rent of £1,071 a month across West Northamptonshire (£12,852 a year) with the £310,000 HM Land Registry median sold price for NN1. Because the rent is local-authority level and the price is outcode level, treat this as an area indicator, not an address-level figure.
Indicative, area-level gross yield (LA rent ÷ outcode median price). Not an address-level or net figure.
Northampton, a high-volume commuter-town market.
Rent vs price in NN1
The yield is built from two real published figures — the ONS mean private rent for West Northamptonshire and the HM Land Registry median sold price for NN1:
| Figure | Value | Source & granularity |
|---|---|---|
| Mean monthly rent | £1,071 | ONS PIPR — West Northamptonshire (LA-level) |
| Annualised rent | £12,852 | rent × 12 |
| Median sold price | £310,000 | HM Land Registry — NN1 (outcode-level) |
| Indicative gross yield | 4.1% | annual rent ÷ median price |
ONS records rents across West Northamptonshire rising +3.5% over the past year.
Gross yield is before mortgage interest, voids, management, maintenance, ground rent / service charge and tax. Net yield is materially lower.
Mean rent by bedrooms in West Northamptonshire
| Property size | Mean monthly rent |
|---|---|
| 1 bedroom | £743 |
| 2 bedrooms | £943 |
| 3 bedrooms | £1,151 |
| 4+ bedrooms | £1,665 |
ONS Price Index of Private Rents mean rent by bedroom category for West Northamptonshire, ONS PIPR, edition published 20 May 2026. Figures are local-authority level.
Buy-to-let context for NN1
A yield is only half the picture. Buy-to-let and second homes pay the additional-property SDLT surcharge — currently +5 percentage points on every band on top of the standard residential rates (England & Northern Ireland). On the £310,000 NN1 median that is a material upfront cost to fold into your numbers.
Insurability flag for the NN1 area
Yield portals stop at the percentage. We pair it with a ground-truth risk screen at the representative point for NN1 — flood, coal and subsidence are landlord insurability and mortgageability questions that quietly move the real return:
flood: recorded nearby · coal: none · subsidence: Improbable · radon: 5/6
recorded flooding nearby
outside the coalfield
clay-subsidence change Improbable
radon Affected Area (band 5/6)
Hazard risk is mapped below outcode level — these flags describe the area, not a single property. Check the exact address with the tools below.
Run the full investor analysis for one NN1 address
This page is the area picture. The £109.90 Investor Pro report takes one exact property and builds the net case — address-level rent and yield, the full SDLT and acquisition cost, running costs, flood / coal / subsidence and EPC, a 30-year forecast and the insurability and mortgageability flags — instead of an LA-level indicator.
Frequently asked questions
What is the rental yield in NN1?
The indicative gross rental yield in NN1 (Northampton) is 4.1% — the ONS mean private rent of £1,071/month for West Northamptonshire, annualised, divided by the £310,000 HM Land Registry median sold price. It is a gross figure (before mortgage interest, voids, management, maintenance, ground rent and tax) and is area-level, not address-level.
How is this yield calculated?
Gross yield = annual rent ÷ price. The rent is the ONS Price Index of Private Rents mean for the outcode's local authority (ONS PIPR, edition published 20 May 2026); the price is the median of recent HM Land Registry Price Paid sales in the outcode. Both are real published figures, but mixing an LA-level rent with an outcode-level price makes the result indicative — use it to compare areas, then check the exact property before you buy.
What about buy-to-let stamp duty in NN1?
Buy-to-let and second homes pay the additional-property SDLT surcharge — currently +5 percentage points on every band on top of the standard residential rates (England & NI). On the £310,000 NN1 median that is a material upfront cost; use the HouseCheckup stamp-duty calculator with the additional-property toggle for the exact figure.
Are there flood, coal or subsidence risks that affect insurability in NN1?
flood: recorded nearby · coal: none · subsidence: Improbable · radon: 5/6 For a landlord these are insurability and mortgageability questions, not just safety ones — a flood or subsidence flag can raise premiums or narrow the lender pool. This is an area-level screen at the representative point for NN1; risk varies street by street, so check the exact address before you offer.
Rental yields in nearby areas
Prime central London around Westminster and St James's, one of the UK's most expensive markets.
Prime central Chelsea, period townhouses and mansion flats commanding premium prices.
Battersea and Clapham Junction, a high-turnover riverside market popular with families and professionals.
Wandsworth and Earlsfield, a busy commuter-belt market inside Zone 2/3.
Wimbledon, a high-demand family market with strong period and new-build stock.
South-bank Southwark and Bermondsey, a riverside market of converted warehouses and new towers.
Sources
- Price Index of Private Rents (PIPR) — Office for National Statistics
- Price Paid Data — HM Land Registry
- Outcode geocoding — postcodes.io
Rent data: ONS Price Index of Private Rents (PIPR), April 2026. Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0. Flood data © Environment Agency copyright and/or database right 2026 (OGL v3.0). Flood Re eligibility based on floodre.co.uk criteria — indicative only; insurers make final decisions. Contains Mining Remediation Authority data © Mining Remediation Authority, licensed under the Open Government Licence v3.0. Contains British Geological Survey materials © UKRI 2026 (GeoClimate UKCP18 Open). Indicative Atlas of Radon — © Crown copyright UKHSA; contains British Geological Survey materials © UKRI. Open Government Licence v3.0.
Yield is indicative: an ONS local-authority mean rent against an HM Land Registry outcode median price. It is not an address-level or net figure and is not investment advice.