{"t":{"slug":"welwyn-garden-city","name":"Welwyn Garden City","district_slug":"welwyn-hatfield","district":"Welwyn Hatfield","region":"East of England","branches":24,"estate":13,"letting":19},"ranked":[{"branch_id":"carnegie-welwyn-hatfield","channel":"sales","score":67.0,"coverage":25,"perf":null,"rep":null,"pres":75.0,"trust":55.0,"pres_raw":2.0,"pres_src":"register records Sep 2025","rank_town":1,"n_town":2,"rank_outcode":1,"n_outcode":1,"rank_district":2,"n_district":3,"rank_region":128,"n_region":410,"rank_brand":1,"n_brand":1,"updated":"2026-10-17","name":"Carnegie","id":"carnegie-welwyn-hatfield","address":"131 Handside Lane, Welwyn Garden City, AL8 6TA","postcode":"AL8 6TA","outcode":"AL8","kind":"Estate and letting agent","grp":null,"town":"Welwyn Garden City","town_slug":"welwyn-garden-city","district":"Welwyn Hatfield","since":null,"founded":"2003-03-27","sales_count":null,"lettings_count":null,"domain":"carnegieuk.com","reviews":[],"year":2003,"provisional":true,"reason":"Strongest on market presence: 2 homes for sale (register records Sep 2025), trading since 2003."},{"branch_id":"cookestates-welwyn-hatfield","channel":"sales","score":37.0,"coverage":25,"perf":null,"rep":null,"pres":25.0,"trust":55.0,"pres_raw":0.0,"pres_src":"agent website","rank_town":2,"n_town":2,"rank_outcode":1,"n_outcode":1,"rank_district":3,"n_district":3,"rank_region":317,"n_region":410,"rank_brand":1,"n_brand":1,"updated":"2026-10-17","name":"Cookestates","id":"cookestates-welwyn-hatfield","address":"16 Great Break, Welwyn Garden City, AL7 3EZ","postcode":"AL7 3EZ","outcode":"AL7","kind":"Estate and letting agent","grp":null,"town":"Welwyn Garden City","town_slug":"welwyn-garden-city","district":"Welwyn Hatfield","since":null,"founded":"2013-10-14","sales_count":0,"lettings_count":0,"domain":"cookestates.co.uk","reviews":[],"year":2013,"provisional":true,"reason":"Strongest on trust and longevity: 0 homes for sale (agent website), trading since 2013."}],"unranked":[{"id":"ashtons-welwyn-hatfield","name":"Ashtons","address":"29 Wigmores North, Welwyn Garden City, AL8 6PG","kind":"Estate and letting agent"},{"id":"chewton-rose-welwyn-hatfield","name":"Chewton Rose","address":"23 Stonehills, Welwyn Garden City, AL8 6NA","kind":"Estate agent"},{"id":"connells-welwyn-hatfield","name":"Connells","address":"38 Wigmores North, Welwyn Garden City, AL8 6PH","kind":"Estate and letting agent"},{"id":"country-properties-welwyn-hatfield","name":"Country Properties","address":"3 Bridge Road, Welwyn Garden City, AL8 6UN","kind":"Estate and letting agent"},{"id":"haart-welwyn-hatfield","name":"Haart","address":"23 Stonehills, Welwyn Garden City, AL8 6NA","kind":"Estate agent"},{"id":"martin-co-welwyn-garden-city-welwyn-hatfield","name":"Martin & Co (Welwyn Garden City)","address":"16 Howardsgate, Welwyn Garden City, AL8 6BQ","kind":"Estate and letting agent"},{"id":"putterills-of-hertfordshire-welwyn-garden-city-welwyn-hatfie","name":"Putterills of Hertfordshire (Welwyn Garden City)","address":"34 Wigmores North, Welwyn Garden City, AL8 6PH","kind":"Estate agent"},{"id":"sandra-cole-exp-welwyn-hatfield","name":"Sandra Cole eXp","address":"3 Juniper Gardens, Welwyn Garden City, AL6 0XH","kind":"Estate agent (self-employed, network)"},{"id":"spencer-james-estates-welwyn-hatfield","name":"Spencer James Estates","address":"Orion House, Bessemer Road, Welwyn Garden City, AL7 1HH","kind":"Estate agent"},{"id":"william-h-brown-welwyn-hatfield","name":"William H Brown","address":"53 Wigmores North, Welwyn Garden City, AL8 6PG","kind":"Estate and letting agent"},{"id":"wrights-property-agents-limited-welwyn-hatfield-2","name":"Wrights Property Agents Limited","address":"36 Stone Hills, Welwyn Garden City, AL8 6PD","kind":"Estate and letting agent"}],"stock":0,"sold_n":601,"median":436000,"ocs":["AL8","AL7","AL6"],"rivals":[{"a":"carnegie-welwyn-hatfield","b":"cookestates-welwyn-hatfield","an":"Carnegie","bn":"Cookestates"}],"nearby":[{"slug":"hatfield","name":"Hatfield"},{"slug":"welwyn","name":"Welwyn"},{"slug":"cuffley","name":"Cuffley"}],"faq":[["Who is the best estate agent in Welwyn Garden City?","On the UK Agent Register score, Carnegie ranks first of 2 estate agent offices in Welwyn Garden City (October 2026). Strongest on market presence: 2 homes for sale (register records Sep 2025), trading since 2003."],["How many estate agents are there in Welwyn Garden City?","24 estate and letting agent offices are on the register in Welwyn Garden City: 13 handle sales and 19 handle lettings."],["Which Welwyn Garden City agent has the most homes for sale?","Carnegie, with 2 (register records Sep 2025)."],["What do homes sell for in Welwyn Garden City?","A median £436,000 across 601 sales in its postcode districts (AL8, AL7, AL6) in the last 12 months (HM Land Registry)."],["How are agents ranked?","Four measures, weighted 40/35/15/10: sales performance, reviews, market presence and trust. Missing measures are left out and the rest rescaled; rankings below 75% data coverage are marked provisional. Full method at /methodology."]],"channel":"sales","month":"October 2026","updated":"2026-10-17"}