Sewell & Gardner - Watford hasn't listed any properties for sale in the last 6 months. This could be because the agent specialises in lettings, or the branch may be closed. Sewell & Gardner - Watford does have 51 reviews, with an average score of 4.4/5 If you're looking to sell in Watford, you may want to choose an agent with more experience. Covering this area are other estate agents, such as Signature Estates - Watford and Rennie & Co Ltd. However to see who will objectively do the best job selling your home, make sure you use our comparison tool.