| House Prices in Market Place, Hatfield AL10 | £170,250 | - | 5 |
| House Prices in Marlborough Close, Welwyn AL6 | £768,278 | 28 | 1 |
| House Prices in Marley Road, Welwyn Garden City AL7 | £453,742 | 54 | - |
| House Prices in Marsden Close, Welwyn Garden City AL8 | £603,222 | 11 | - |
| House Prices in Marsden Green, Welwyn Garden City AL8 | £542,840 | 51 | - |
| House Prices in Marsden Road, Welwyn Garden City AL8 | £544,591 | 54 | 14 |
| House Prices in Marshmoor Cottages, Great North Road, North Mymms, Hatfield AL9 | £702,333 | 3 | 1 |
| House Prices in Marshmoor Crescent, Welham Green, Hatfield AL9 | - | 42 | 1 |
| House Prices in Marshmoor House, Marshmoor Lane, Welham Green, Hatfield AL9 | £260,000 | - | 2 |
| House Prices in Marshmoor Lane, Welham Green, Hatfield AL9 | £359,333 | 2 | 3 |
| House Prices in Martin Close, Hatfield AL10 | £385,500 | 18 | - |
| House Prices in Martinfield Business Centre, Welwyn Garden City AL7 | £334,000 | - | 8 |
| House Prices in Martlesham, Welwyn Garden City AL7 | £518,143 | 27 | 2 |
| House Prices in Maryland, Hatfield AL10 | £353,244 | 79 | 1 |
| House Prices in Mary Proud Court, Oak Piece, Welwyn AL6 | £479,000 | 6 | 2 |
| House Prices in Mayfield, Welwyn Garden City AL8 | £551,667 | 6 | - |
| House Prices in Maynard House, The Common, Hatfield AL10 | £296,400 | - | 5 |
| House Prices in Maynard Place, Cuffley, Potters Bar EN6 | £267,417 | - | 14 |
| House Prices in Mcdonald Court, Hatfield AL10 | - | 6 | 1 |
| House Prices in Mead House, Ayot St Lawrence, Welwyn AL6 | - | 2 | - |
| House Prices in Mead House, Welwyn AL6 | - | 2 | - |
| House Prices in Meadow Close, Welham Green, Hatfield AL9 | £479,400 | 16 | - |
| House Prices in Meadow Croft, Hatfield AL10 | £352,579 | 28 | 20 |
| House Prices in Meadow Dell, Hatfield AL10 | £390,143 | 16 | - |
| House Prices in Meadow Green, Welwyn Garden City AL8 | £875,545 | 21 | 8 |
| House Prices in Meadow Lodge, Coopers Lane, Northaw, Potters Bar EN6 | £549,000 | 1 | 1 |
| House Prices in Meadway, Welwyn Garden City AL7 | £401,840 | 74 | 2 |
| House Prices in Melbourne Court, Welwyn Garden City AL8 | £598,905 | 21 | 9 |
| House Prices in Meldrum Court, Welwyn AL6 | £823,000 | 6 | - |
| House Prices in Mendlesham, Welwyn Garden City AL7 | £760,391 | 26 | - |
| House Prices in Mercury House, Broadwater Road, Welwyn Garden City AL7 | £260,214 | - | 42 |
| House Prices in Merrifield Court, Welwyn Garden City AL7 | £278,211 | 1 | 108 |
| House Prices in Merritt Walk, Welham Green, Hatfield AL9 | - | 4 | - |
| House Prices in Merrowes Cottages, Hatfield AL9 | - | 2 | - |
| House Prices in Middlefield, Hatfield AL10 | £208,346 | 39 | 62 |
| House Prices in Middlefield, Welwyn Garden City AL7 | £413,737 | 46 | 1 |
| House Prices in Mill Close, Lemsford, Welwyn Garden City AL8 | £537,375 | 21 | - |
| House Prices in Mill Cottages, Hatfield AL9 | £558,333 | 3 | - |
| House Prices in Millfield, Welwyn Garden City AL7 | £348,000 | 20 | 4 |
| House Prices in Mill Green Cottages, Essendon, Hatfield AL9 | £503,667 | 3 | 4 |
| House Prices in Mill Green, Hatfield AL9 | £666,250 | 16 | 9 |
| House Prices in Mill Green Lane, Mill Green, Hatfield AL9 | £718,250 | 4 | - |
| House Prices in Mill Green Lodge, Mill Green, Hatfield AL9 | £494,500 | 2 | - |
| House Prices in Mill Green Road, Welwyn Garden City AL7 | £369,677 | 127 | 19 |
| House Prices in Mill House, Tewin, Welwyn AL6 | - | 4 | - |
| House Prices in Mill Lane, Welwyn AL6 | £781,286 | 38 | 7 |
| House Prices in Millwards, Hatfield AL10 | £307,366 | 119 | 67 |
| House Prices in Mimram Drive, Tewin, Welwyn AL6 | £1,050,250 | 4 | - |
| House Prices in Mimram Place, Welwyn AL6 | £927,867 | 15 | - |
| House Prices in Mimram Road, Welwyn AL6 | £504,762 | 32 | - |
| House Prices in Mimram Walk, Welwyn AL6 | £525,143 | 8 | 1 |
| House Prices in Minster Close, Hatfield AL10 | £540,000 | 15 | 30 |
| House Prices in Mitchell Close, Welwyn Garden City AL7 | £600,000 | 9 | - |
| House Prices in Moatwood Green, Welwyn Garden City AL7 | £247,600 | 15 | 15 |
| House Prices in Moffats Close, Brookmans Park, Hatfield AL9 | £877,000 | 10 | - |
| House Prices in Moffats Lane, Brookmans Park, Hatfield AL9 | £1,288,974 | 124 | 2 |
| House Prices in Monica Court, Applecroft Road, Welwyn Garden City AL8 | £290,250 | - | 4 |
| House Prices in Monks Rise, Welwyn Garden City AL8 | £752,900 | 16 | - |
| House Prices in Monkswood, Welwyn Garden City AL8 | £456,286 | 41 | 8 |
| House Prices in Moorend, Welwyn Garden City AL7 | £568,222 | 16 | - |
| House Prices in Moorlands, Welwyn Garden City AL7 | £564,140 | 63 | - |
| House Prices in Moorside, Welwyn Garden City AL7 | £583,300 | 16 | - |
| House Prices in Moors Walk, Welwyn Garden City AL7 | £332,250 | 22 | 36 |
| House Prices in Mornington, Welwyn AL6 | £1,243,769 | 24 | 1 |
| House Prices in Mosquito Way, Hatfield AL10 | £407,744 | 35 | 199 |
| House Prices in Moss Green, Welwyn Garden City AL7 | - | 40 | - |
| House Prices in Mount Pleasant Close, Hatfield AL9 | £735,227 | 28 | - |
| House Prices in Mount Pleasant Lane, Hatfield AL9 | £590,000 | 29 | - |
| House Prices in Mountway Close, Welwyn Garden City AL7 | £378,091 | 24 | - |
| House Prices in Mount Way, Welwyn Garden City AL7 | £375,512 | 86 | 7 |
| House Prices in Mulberry House, Wildhill Road, Hatfield AL9 | £3,178,000 | 2 | 1 |
| House Prices in Mulberry Mead, Hatfield AL10 | £555,560 | 64 | 6 |
| House Prices in Mundells, Welwyn Garden City AL7 | £242,932 | - | 47 |
| House Prices in Mymms Drive, Brookmans Park, Hatfield AL9 | £1,873,849 | 84 | 3 |
| House Prices in Nash Close, Welham Green, Hatfield AL9 | £289,471 | 33 | 31 |
| House Prices in Nathans Close, Welwyn AL6 | £1,226,000 | 4 | - |
| House Prices in Nettlecroft, Welwyn Garden City AL7 | £235,235 | 6 | 29 |
| House Prices in Newfields, Welwyn Garden City AL8 | £476,867 | 76 | - |
| House Prices in Newfield Way, St Albans AL4 | £853,033 | 30 | - |
| House Prices in Newitt Court, Welwyn AL6 | £1,270,286 | 7 | - |
| House Prices in Newlands, Old Hertford Road, Hatfield AL9 | £246,214 | - | 20 |
| House Prices in New Place, Welwyn AL6 | £1,165,000 | 7 | 2 |
| House Prices in New Road, Welwyn AL6 | £1,407,493 | 75 | 11 |
| House Prices in New Road, Welwyn Garden City AL8 | £649,750 | 11 | - |
| House Prices in Newstead, Hatfield AL10 | £350,474 | 30 | - |
| House Prices in New Wood, Welwyn Garden City AL7 | £244,842 | 13 | 31 |
| House Prices in Nimrod Drive, Hatfield AL10 | £644,857 | 27 | 9 |
| House Prices in Nine Acre Lane, Hatfield AL10 | - | 6 | 4 |
| House Prices in Ninnings Lane, Welwyn AL6 | £1,667,000 | 4 | - |
| House Prices in Node Way Gardens, Welwyn AL6 | £362,478 | 36 | 57 |
| House Prices in Norfolk Cottages, Ayot St Lawrence, Welwyn AL6 | £1,141,500 | 3 | - |
| House Prices in Norman Road, Welwyn AL6 | £425,733 | 24 | - |
| House Prices in Normans Lane, Welwyn AL6 | £1,272,000 | 5 | - |
| House Prices in Northaw Place, Northaw, Potters Bar EN6 | £3,470,778 | 11 | - |
| House Prices in Northaw Road East, Cuffley, Potters Bar EN6 | £828,569 | 72 | 2 |
| House Prices in Northaw Road West, Northaw, Potters Bar EN6 | £872,667 | 74 | 5 |
| House Prices in Northcotts, Hatfield AL9 | £241,333 | 4 | 32 |
| House Prices in Northdown Road, Hatfield AL10 | £277,623 | 69 | 53 |
| House Prices in North Drive, Hatfield AL9 | £279,676 | - | 37 |
| House Prices in Northfield, Hatfield AL10 | £221,455 | 20 | 65 |
