How much rent can I get for my London flat?
Short answer: it depends on your specific flat, not just your postcode — the floor, the view, the finish and the building it sits in move the rent more than the area does. The only reliable way to know is a valuation priced from real letting data, not a portal instant-estimate. We'll give you that figure free, and we'll tell you the rent it will actually let at rather than a flattering headline.
This post explains what really sets your rent, why an online estimate isn't a valuation, and how we arrive at a number you can market on.
Why there's no single "market rent" for your postcode
A postcode average hides a wide spread. In the same building, a second-floor flat facing the courtyard and a fifteenth-floor flat facing the river are two different markets. Our own managed data shows the range inside a single postcode is routinely several hundred pounds a month.
So "what do flats in SW8 rent for?" is the wrong question. "What will this flat, on this floor, with this view and this finish, let for this month?" is the right one — and it has a specific, evidenced answer.
What actually sets your rent
Six things move the number, roughly in order of weight:
| Factor | What it changes |
|---|---|
| The building, floor and view | Often the biggest swing — a high floor or a river view can be worth hundreds a month over the same flat lower down |
| Location and transport | Walk time to the station and the lines it's on |
| Size and layout | Usable space, and whether the second bedroom is a real double |
| Finish and furnishing | Condition, the kitchen and bathroom spec, furnished vs unfurnished |
| EPC rating | A better rating widens your tenant pool and supports the rent |
| Timing | When you launch — our data shows August carries the year's highest demand, and a Monday launch lands best |
For a new-build, the building's own launch pricing and the competing units in the same block matter too — first-let pricing is its own discipline.
Why an online instant estimate isn't a valuation
Portal "how much is my property worth" tools give an instant figure from a broad statistical model. They're a reasonable starting point for a ballpark, but they don't know your floor, your view, your finish, or what equivalent flats nearby are actually letting at right now. Marketing your flat on an instant estimate is how landlords end up either leaving money on the table or, more often, over-pricing and sitting on the market.
An instant estimate is a guess with a confident font. A valuation is a number with evidence behind it.
How we price a rental valuation
We price from data you can't get from a portal:
- Our own three-year Rightmove and Zoopla dataset — real listing and enquiry history, not asking prices.
- Our managed lettings — what our own comparable stock is actually let at right now, live from our system.
- Equivalent-spec comparables — we cross-reference your flat against what similar homes in neighbouring buildings are clearing at, not what they're listed at.
- The timing rules — the Four-Week Rule, the August demand peak and the Monday-launch finding, so the number is tied to a launch plan, not just a figure.
The output is a rent we expect your flat to let at without sitting — and, just as importantly, the launch date and the marketing that get it there.
Why the day-one rent matters more than ever
Under the Renters' Rights Act 2025, in force since 1 May 2026, the advertised rent is the legal ceiling — no agent can invite or accept a bid above it (section 56) — and in-tenancy increases run only once a year through section 13 of the Housing Act 1988 (as amended). So the rent you set on day one largely sets the rent for the life of the tenancy. There's no "list high and see who bids" anymore. The day-one number has to be right, which makes pricing a data job rather than a sales pitch.
What we won't do
We won't quote you a flattering headline rent to win the instruction. An over-priced flat sits, slips down the portal results, and then lets for less than it would have at the right price — see why we won't take a property on at the wrong rent. We'd rather tell you the real number and let it faster.
Get your number
If you'd like the figure for your specific flat — priced from our data, with no obligation — book a free rental valuation. We'll tell you what it will let at, when to launch it, and what, honestly, we'd change to get you more.
Sources
- Harvey W James three-year Rightmove and Zoopla letting dataset, and managed-lettings data (live, /stats.json; figures as at June 2026)
- Renters' Rights Act 2025: rental bidding ban (s.56); in-tenancy rent increases via s.13 Housing Act 1988 (as amended)