| House Prices in North Lodge, Hatfield AL9 | - | 3 | - |
| House Prices in North Mymms Park, North Mymms, Hatfield AL9 | £2,109,500 | 11 | - |
| House Prices in North Ride, Welwyn AL6 | £900,182 | 15 | - |
| House Prices in Northway, Welwyn Garden City AL7 | £395,750 | 8 | - |
| House Prices in Northwood, Welwyn Garden City AL7 | £795,000 | 11 | 1 |
| House Prices in Nursery Gardens, Welwyn Garden City AL7 | £303,940 | 37 | 23 |
| House Prices in Nursery Hill, Welwyn Garden City AL7 | £315,860 | 64 | 36 |
| House Prices in Nutfield, Welwyn Garden City AL7 | £326,917 | 24 | 4 |
| House Prices in Nut Grove, Welwyn Garden City AL8 | £872,333 | 11 | 1 |
| House Prices in Nyn Park, Well Road, Northaw, Potters Bar EN6 | £3,423,000 | 2 | 2 |
| House Prices in Oakdale, Welwyn Garden City AL8 | £465,236 | 117 | - |
| House Prices in Oaken Grove, Welwyn Garden City AL7 | £539,231 | 19 | - |
| House Prices in Oak Grove, Hatfield AL10 | £351,765 | 44 | - |
| House Prices in Oakhill Drive, Welwyn AL6 | £1,119,522 | 35 | - |
| House Prices in Oakington, Welwyn Garden City AL7 | £733,667 | 21 | - |
| House Prices in Oaklands Avenue, Brookmans Park, Hatfield AL9 | £741,226 | 66 | - |
| House Prices in Oaklands Court, Canonsfield Road, Welwyn AL6 | £330,214 | - | 14 |
| House Prices in Oaklands Rise, Welwyn AL6 | £1,256,548 | 42 | 4 |
| House Prices in Oaklands View, Welwyn AL6 | £1,707,333 | 3 | - |
| House Prices in Oaklands Wood, Hatfield AL10 | £446,689 | 45 | - |
| House Prices in Oak Lane, Cuffley, Potters Bar EN6 | £865,000 | 8 | 1 |
| House Prices in Oaklea Close, Welwyn AL6 | £957,200 | 7 | - |
| House Prices in Oaklea, Welwyn AL6 | £851,333 | 46 | 1 |
| House Prices in Oaklea Wood, Welwyn AL6 | £1,069,000 | 9 | - |
| House Prices in Oak Lodge, Digswell Lane, Welwyn AL6 | £1,703,500 | 2 | - |
| House Prices in Oak Piece Court, Oak Piece, Welwyn AL6 | £266,250 | - | 4 |
| House Prices in Oak Piece, Welwyn AL6 | £503,370 | 23 | 6 |
| House Prices in Oak Tree Close, Hatfield AL10 | - | 41 | 19 |
| House Prices in Oaktree Court, Tewin, Welwyn AL6 | - | - | 7 |
| House Prices in Oaktree Garth, Welwyn Garden City AL7 | £331,867 | 20 | - |
| House Prices in Oakwell Drive, Northaw, Potters Bar EN6 | £1,611,714 | 7 | - |
| House Prices in Oakwell, Wellfield Road, Hatfield AL10 | £607,000 | 1 | 1 |
| House Prices in Old Bank House, Salisbury Square, Hatfield AL9 | £267,000 | - | 2 |
| House Prices in Old Cottage, Green Lanes, Hatfield AL10 | £1,266,000 | 1 | 1 |
| House Prices in Old Dairy Yard, Welwyn Garden City AL7 | £573,500 | 8 | - |
| House Prices in Old Farmhouse Mews, Welham Green, Hatfield AL9 | £444,750 | 9 | - |
| House Prices in Old Forge Close, Welwyn AL6 | £1,213,800 | 10 | - |
| House Prices in Old French Horn Lane, Hatfield AL10 | £685,833 | 17 | - |
| House Prices in Old Hertford Road, Hatfield AL9 | £406,743 | 35 | 21 |
| House Prices in Old Leys, Hatfield AL10 | £618,000 | 9 | - |
| House Prices in Old Nursery Way, Welwyn AL6 | £1,621,000 | 4 | - |
| House Prices in Old Rectory Drive, Hatfield AL10 | £502,429 | 68 | 4 |
| House Prices in Old School House, School Lane, Essendon, Hatfield AL9 | £980,000 | 1 | 1 |
| House Prices in Oldwood, Welwyn AL6 | £985,667 | 3 | - |
| House Prices in Onslow Close, Hatfield AL10 | £315,500 | 18 | 7 |
| House Prices in Orchard Close, Cuffley, Potters Bar EN6 | £1,031,222 | 11 | 2 |
| House Prices in Orchard Mead, Hatfield AL10 | £410,833 | 26 | - |
| House Prices in Orchard Road, Tewin, Welwyn AL6 | £1,517,000 | 53 | 1 |
| House Prices in Orchard Road, Welwyn AL6 | £1,598,667 | 53 | 1 |
| House Prices in Orchid Close, Hatfield AL10 | £649,125 | 8 | - |
| House Prices in Orion Court, Clock House Gardens, Welwyn AL6 | £324,167 | - | 12 |
| House Prices in Orme Court, Essendon, Hatfield AL9 | £669,250 | 8 | - |
| House Prices in Otter Gardens, Hatfield AL10 | £355,000 | 12 | - |
| House Prices in Otto Road, Welwyn Garden City AL7 | £276,691 | - | 96 |
| House Prices in Ottway Walk, Welwyn AL6 | £1,126,333 | 4 | 4 |
| House Prices in Oxford Place, Hatfield AL10 | - | 2 | 10 |
| House Prices in Oxlease Drive, Hatfield AL10 | £347,400 | 21 | - |
| House Prices in Paddock Cottage, Station Road, North Mymms, Hatfield AL9 | £1,128,000 | 1 | 1 |
| House Prices in Palmerston Close, Welwyn Garden City AL8 | £1,110,500 | 5 | - |
| House Prices in Panshanger Drive, Welwyn Garden City AL7 | - | - | 15 |
| House Prices in Park Close, Brookmans Park, Hatfield AL9 | £478,800 | 28 | 16 |
| House Prices in Park Close, Hatfield AL9 | £535,387 | 27 | 17 |
| House Prices in Park Cottages, Hatfield AL9 | - | 3 | 1 |
| House Prices in Parkfields, Welwyn Garden City AL8 | £815,550 | 29 | 1 |
| House Prices in Parkgate House, Great North Road, Hatfield AL9 | £306,762 | - | 24 |
| House Prices in Parkhouse Court, Hatfield AL10 | £274,630 | 4 | 265 |
| House Prices in Park Meadow, Hatfield AL9 | £470,506 | 111 | 2 |
| House Prices in Park Mews, Hatfield AL9 | £425,400 | 6 | 1 |
| House Prices in Park Road, Northaw, Potters Bar EN6 | £606,917 | 30 | - |
| House Prices in Parkside, Welwyn AL6 | £502,667 | 42 | 7 |
| House Prices in Park Street, Hatfield AL9 | £423,917 | 15 | 26 |
| House Prices in Park View, Hatfield AL9 | £777,500 | 6 | - |
| House Prices in Parkway Close, Welwyn Garden City AL8 | £729,714 | 12 | - |
| House Prices in Parkway Gardens, Welwyn Garden City AL8 | £404,475 | 18 | 28 |
| House Prices in Parkway, Welwyn Garden City AL8 | £625,767 | 108 | 51 |
| House Prices in Parsonage Lane, Welham Green, Hatfield AL9 | £500,040 | 40 | - |
| House Prices in Parsonage Road, Welham Green, Hatfield AL9 | £529,727 | 37 | - |
| House Prices in Peace Grove, Welwyn AL6 | £865,875 | 12 | - |
| House Prices in Pearmain House, Blossom Drive, Welwyn Garden City AL7 | £263,000 | - | 10 |
| House Prices in Peartree Close, Welwyn Garden City AL7 | - | 6 | 12 |
| House Prices in Peartree Court, Welwyn Garden City AL7 | £348,222 | 14 | 21 |
| House Prices in Peartree Farm, Peartree Lane, Welwyn Garden City AL7 | £260,500 | 3 | - |
| House Prices in Peartree Lane, Welwyn Garden City AL7 | £397,700 | 76 | 2 |
| House Prices in Peel Court, College Way, Welwyn Garden City AL8 | £404,386 | - | 63 |
| House Prices in Pelham Court, Welwyn Garden City AL7 | £405,500 | 7 | 7 |
| House Prices in Penn Way, Welwyn Garden City AL7 | £410,185 | 39 | 38 |
| House Prices in Pennyfathers Lane, Welwyn AL6 | £1,997,200 | 5 | - |
| House Prices in Pennyfathers, Welwyn AL6 | - | 5 | 2 |
| House Prices in Pentley Close, Welwyn Garden City AL8 | £845,250 | 11 | 1 |
| House Prices in Pentley Park, Welwyn Garden City AL8 | £854,721 | 67 | - |
| House Prices in Peplins Close, Brookmans Park, Hatfield AL9 | £885,200 | 10 | - |
| House Prices in Peplins Way, Brookmans Park, Hatfield AL9 | £840,128 | 103 | 1 |
| House Prices in Peregrine Way, Hatfield AL10 | £504,697 | 35 | - |
| House Prices in Perkins Way, Welwyn Garden City AL7 | £581,538 | 13 | - |
| House Prices in Perrywood, Welwyn Garden City AL8 | £316,429 | 1 | 6 |
| House Prices in Picketts, Welwyn Garden City AL8 | £446,786 | 20 | - |
| House Prices in Pine Crest, Welwyn AL6 | £1,061,300 | 12 | - |
| House Prices in Pine Grove, Brookmans Park, Hatfield AL9 | £1,416,485 | 89 | - |
| House Prices in Pinewood Close, St Albans AL4 | £544,962 | 42 | - |
| House Prices in Pinewood, Welwyn Garden City AL7 | £437,889 | 34 | - |
