| House Prices in James Watt Close, Drayton Fields Industrial Estate, Daventry NN11 | £171,750 | 4 | - |
| House Prices in Jasmine Cottage, New Terrace, Byfield, Daventry NN11 | £475,333 | 3 | - |
| House Prices in Jasmine Cottage, Old Road, Braunston, Daventry NN11 | £457,000 | 3 | - |
| House Prices in Jasmine Cottage, Sheldons Lane, Walgrave, Northampton NN6 | £411,000 | 1 | 1 |
| House Prices in Jays Nest, Welford Road, Chapel Brampton, Northampton NN6 | £719,000 | 1 | 1 |
| House Prices in Jellicoe Close, Daventry NN11 | £164,500 | 25 | 4 |
| House Prices in Jennings Close, Daventry NN11 | £158,083 | 18 | - |
| House Prices in Jervis Close, Daventry NN11 | £159,444 | 21 | 3 |
| House Prices in Jeyes Close, Moulton, Northampton NN3 | £468,625 | 12 | 1 |
| House Prices in Johnson Close, Daventry NN11 | £191,200 | 8 | - |
| House Prices in Johnswell Way, Moulton, Northampton NN3 | £375,375 | 8 | - |
| House Prices in Joseph Priestly Court, Daventry NN11 | - | - | 36 |
| House Prices in Jubilee Barn, Long Buckby Road, Daventry NN11 | £365,000 | 1 | 1 |
| House Prices in Jubilee Close, Byfield, Daventry NN11 | £240,429 | 36 | - |
| House Prices in Jubilee Close, Woodford Halse, Daventry NN11 | £249,714 | 36 | - |
| House Prices in Jubilee Cottage, Norton Road, Daventry NN11 | £484,500 | 2 | - |
| House Prices in Jubilee Drive, Walgrave, Northampton NN6 | £260,000 | 30 | 1 |
| House Prices in Jubilee Road, Daventry NN11 | £202,379 | 58 | - |
| House Prices in Judges Court, Creaton, Northampton NN6 | £442,000 | 1 | 1 |
| House Prices in Juniper Thorn, Brixworth, Northampton NN6 | £435,444 | 9 | - |
| House Prices in Keats Close, Earls Barton, Northampton NN6 | £322,111 | 16 | - |
| House Prices in Keats Road, Daventry NN11 | £234,000 | 11 | 1 |
| House Prices in Keble Close, Daventry NN11 | £228,900 | 14 | - |
| House Prices in Kelmarsh, Harrington, Northampton NN6 | - | 4 | - |
| House Prices in Kelmarsh Mews, Middlemore, Daventry NN11 | £282,000 | 7 | - |
| House Prices in Kelmarsh Road, Harrington, Northampton NN6 | £463,000 | 4 | 2 |
| House Prices in Kelmarsh Road, Kelmarsh, Northampton NN6 | £482,000 | 4 | 2 |
| House Prices in Kenilworth Close, Daventry NN11 | £269,600 | 14 | - |
| House Prices in Kennedy Close, Daventry NN11 | £143,500 | 10 | 4 |
| House Prices in Kennel Terrace, Brixworth, Northampton NN6 | £347,800 | 19 | 18 |
| House Prices in Kennel Terrace, Pitsford, Northampton NN6 | £328,133 | 19 | 18 |
| House Prices in Kettering Road, Hannington, Northampton NN6 | £608,559 | 52 | 11 |
| House Prices in Kettering Road, Moulton, Northampton NN3 | £389,209 | 109 | 33 |
| House Prices in Kettering Road North, Northampton NN3 | £332,952 | 70 | 24 |
| House Prices in Kettering Road, Walgrave, Northampton NN6 | £585,412 | 52 | 11 |
| House Prices in Keys Close, Daventry NN11 | £148,667 | 9 | 1 |
| House Prices in Kiln Lane, Welton, Daventry NN11 | £591,769 | 20 | 1 |
| House Prices in Kilsby Road, Watford, Northampton NN6 | £832,200 | 5 | 1 |
| House Prices in Kimbell Lane, Spratton, Northampton NN6 | £440,500 | 2 | - |
| House Prices in Kingfisher Close, Woodford Halse, Daventry NN11 | £260,550 | 20 | - |
| House Prices in Kings Corner Close, Woodford Halse, Daventry NN11 | - | 4 | - |
| House Prices in Kings Green, Daventry NN11 | £342,000 | 12 | - |
| House Prices in Kingsley Avenue, Daventry NN11 | £264,094 | 31 | 16 |
| House Prices in Kingsthorpe House, Hinton Road, Northampton NN2 | £102,000 | - | 14 |
| House Prices in Kingston Close, Daventry NN11 | - | 34 | - |
| House Prices in Kingston Close, Long Buckby, Northampton NN6 | £403,250 | 13 | - |
| House Prices in Kingston Lodge, Barbican, Daventry NN11 | £961,000 | 2 | - |
| House Prices in Kingston Lodge, Whilton Locks, Whilton, Daventry NN11 | £922,500 | 2 | - |
| House Prices in King Street, Earls Barton, Northampton NN6 | £272,386 | 90 | 5 |
| House Prices in King Street, Long Buckby, Northampton NN6 | £261,807 | 90 | 5 |
| House Prices in King Style Close, Crick, Northampton NN6 | £278,261 | 56 | - |
| House Prices in Kirk Close, Moulton, Northampton NN3 | £307,857 | 7 | - |
| House Prices in Kitchener Close, Daventry NN11 | £374,938 | 16 | - |
| House Prices in Knightley Close, Byfield, Daventry NN11 | £529,167 | 7 | - |
| House Prices in Knightons Way, Brixworth, Northampton NN6 | £546,980 | 49 | 1 |
| House Prices in Knights Close, Earls Barton, Northampton NN6 | £398,750 | 16 | - |
| House Prices in Knole Way, Daventry NN11 | £360,364 | 11 | - |
| House Prices in Knutsford Lane, Long Buckby, Northampton NN6 | £332,375 | 12 | - |
| House Prices in Kyberry Way, Moulton, Northampton NN3 | £529,000 | 3 | - |
| House Prices in Laburnum Close, Woodford Halse, Daventry NN11 | £225,750 | 38 | - |
| House Prices in Lacemaker Crescent, Woodford Halse, Daventry NN11 | £342,600 | 22 | - |
| House Prices in Lacock House, Snowshill Close, Daventry NN11 | £132,250 | - | 7 |
| House Prices in Lady Close, Newnham, Daventry NN11 | £354,300 | 13 | - |
| House Prices in Ladys Lane, Mears Ashby, Northampton NN6 | £531,000 | 4 | - |
| House Prices in Lake Crescent, Daventry NN11 | £316,750 | 38 | - |
| House Prices in Lakeside, Overstone Park Golf Club, Northampton NN6 | £251,244 | 50 | 7 |
| House Prices in Lakeside, Overstone Park, Northampton NN6 | £267,065 | 50 | 7 |
| House Prices in Lamport, Brixworth, Northampton NN6 | - | 2 | 4 |
| House Prices in Lamport Drive, Heartlands Business Park, Daventry NN11 | £1,202,333 | - | 3 |
| House Prices in Lamport Grange, Hanging Houghton, Northampton NN6 | £776,000 | 1 | 1 |
| House Prices in Lamport Road, Draughton, Northampton NN6 | £381,000 | 19 | 6 |
| House Prices in Lamport Road, Old, Northampton NN6 | £396,000 | 19 | 6 |
| House Prices in Lanchester Way, Royal Oak Industrial Estate, Daventry NN11 | £664,500 | 2 | - |
| House Prices in Langdale, Cherry Hill, Old, Northampton NN6 | £479,500 | 2 | - |
| House Prices in Langdon Close, Daventry NN11 | £470,188 | 20 | - |
| House Prices in Langham Close, Creaton, Northampton NN6 | £900,000 | 2 | 2 |
| House Prices in Langham Cottages, Cottesbrooke, Northampton NN6 | - | 3 | - |
| House Prices in Langham Court, Guilsborough, Northampton NN6 | - | - | 3 |
| House Prices in Langham Place, Walgrave, Northampton NN6 | £324,000 | 8 | 2 |
| House Prices in Langlands Drive, Moulton, Northampton NN3 | £460,385 | 13 | - |
| House Prices in Langton Rise, Whilton, Daventry NN11 | £681,200 | 7 | 1 |
| House Prices in Lansdown Close, Daventry NN11 | £403,500 | 21 | - |
| House Prices in Lapin Lane, Thorpe Underwood, Northampton NN6 | £886,667 | 4 | - |
| House Prices in Larch Close, Woodford Halse, Daventry NN11 | £327,500 | 12 | - |
| House Prices in Larch Drive, Daventry NN11 | £285,212 | 33 | - |
| House Prices in Lattimore Close, West Haddon, Northampton NN6 | £500,050 | 20 | 1 |
| House Prices in Lauds Road, Crick, Northampton NN6 | £455,632 | 37 | 3 |
| House Prices in Laurel Close, Brixworth, Northampton NN6 | £453,000 | 4 | - |
| House Prices in Lavender Cottage, High Street, Scaldwell, Northampton NN6 | £409,000 | 2 | - |
| House Prices in Lavender Hill, Moulton, Northampton NN3 | £497,286 | 18 | 1 |
| House Prices in Leicester Lane, Eydon, Daventry NN11 | - | 2 | 2 |
| House Prices in Leonard Lane, Moulton, Northampton NN3 | £189,000 | 15 | - |
| House Prices in Lesnes Close, Daventry NN11 | - | 15 | - |
| House Prices in Lesson Road, Brixworth, Northampton NN6 | £253,857 | 42 | - |
| House Prices in Leys Close, Long Buckby, Northampton NN6 | £355,368 | 23 | - |
| House Prices in Leys Road, Earls Barton, Northampton NN6 | £567,500 | 8 | - |
| House Prices in Lichfield Lane, Creaton, Northampton NN6 | - | 1 | 1 |
| House Prices in Lilac Cottage, Cross Street, Daventry NN11 | £412,333 | 3 | - |
| House Prices in Lilac Cottage, High Street, Creaton, Northampton NN6 | £579,000 | 2 | 1 |
| House Prices in Lilac Cottage, Little Preston, Daventry NN11 | £426,667 | 3 | - |
