OneSeven Realty is a fixed-fee property agency at 286 Jalan Besar, #01-01, in Kallang, for people selling an HDB flat or a condominium. As at 2026 the fee is $2,799 for an HDB flat and $5,799 for a condominium, with no GST, no upfront payments and no hidden costs. The business is a division of AF Holdings Pte Ltd and was founded in January 2024. Commission is usually the largest cost of selling a flat, so a fixed fee changes what the seller keeps for a next home or for retirement. Clients praise the marketing and the consistent follow-up. One says their flat sold within a day of being marketed, another in a single weekend of viewings, and a third reports a record-high price for their precinct. The team is also praised for patience, for making sellers feel unhurried, and for the video editing used to advertise units. The website says the service also suits first-time buyers, upgraders and people downsizing. Open Locally lists 29 other real estate agents within a kilometre. Of the 14 with ten or more reviews, none rates higher than OneSeven Realty. Our pick in Kallang for an HDB or condo owner who wants to keep more of the sale price.