Places to browse
The property portals: filters, maps, photos, floor plans and a button to contact the agent or landlord. Most London lettings appear on at least one of them.
London rental sites compared
The Best Sites to Find a Flat to Rent in London (2026)
Use one property portal to browse and one alert service to follow your search. London rentals are spread across the big property portals, letting agents’ own websites, landlord-direct sites, flatshare sites, classified boards and build-to-rent operators. RentReboot watches all of these kinds of site and sends the matches to you by email.
This guide compares seven kinds of place to look for a flat or a room in London. Each entry says what that kind of site does best, what its listings cost, and when a different pick fits better.
The numbers come from 69,069 whole-home listings and 12,074 room listings first seen in London from 12 to 30 September 2026. The method section at the bottom states what the counts can and cannot tell you.
Reviewed 1 October 2026
Before the list
Three kinds of rental site
Direct sources
Letting agents’ own websites, landlord-direct sites, flatshare sites, classified boards and build-to-rent operators. Each carries listings that are easy to miss if you only use a portal.
Alert services
One saved search applied to many sites at once. An alert service hosts no listings. It watches the other kinds of site and sends you the matches. RentReboot is this kind.
How we compared them
How much of the market it shows
Measured where we could: how many of the 69,069 whole-home listings from 12 to 30 September 2026 appeared on each kind of site.
Price band of the listings
The median asking rent per calendar month and the share of listings under £2,000 pcm. A budget search and a prime central search need different sites.
Search tools
Filters, maps, floor plans, saved searches and a fast way to book a viewing.
Alerts
Whether you can be told when a matching flat appears, and how. In a busy market, the first renters to ask often get the viewings.
Renter protections
Whether the kind of site helps you deal with an agent, a landlord or a flatmate safely, and what the law in England lets them ask you to pay.
At a glance
All 7 kinds of site side by side
Reviewed 1 October 2026
| Kind of site | Type | Tracked London listings | Asking rents | Standout |
|---|---|---|---|---|
| RentReboot | Multi-source alert service | All 69,069 home and 12,074 room listings | Median £2,500 pcm across all tracked homes | One saved search across every kind of site on this page |
| Property portals | National listing portals | 56,538 home listings (81.9%) | Median £2,500 pcm; 28.4% under £2,000 | Most London lettings appear on at least one portal |
| Letting agent websites | Agencies’ own websites | 6,041 home listings (8.7%) | Median £3,000 pcm; 17.5% under £2,000 | Each agency’s full list of instructions in one place |
| Landlord-direct sites | Sites where landlords list without an agent | 2,676 home listings (3.9%), plus 953 rooms | Median £2,250 pcm; 37.2% under £2,000 | You deal with the landlord directly |
| Flatshare sites | Room and flatmate listings | 8,405 room listings (69.6% of rooms) | Median £950 pcm for a room | Most of the room listings in our data |
| Build-to-rent operators | Operators of purpose-built rental blocks | 350 home listings (0.5%) | Median £2,600 pcm; 4.9% under £2,000 | One landlord for the whole building, on-site management |
| Classified boards | Community classified posts | 2,165 home listings (3.1%), plus 226 rooms | Median £2,095 pcm; 46.0% under £2,000 | The highest share under £2,000 of any whole-home source |
Counts are new London listings in RentReboot’s data, 12 to 30 September 2026: 69,069 whole homes and 12,074 rooms. The same flat on two sites counts twice. Counts show what we collected, not the full inventory of each kind of site.
The ranking
Every kind of site reviewed in order
1. RentReboot - best for alerts across every kind of London site
RentReboot is an alert service, not a property portal. It hosts no listings. It watches the London property portals, letting agents’ own websites, landlord-direct listings, flatshare sites, classified boards and build-to-rent operators, and it emails you the listings that match your budget, neighbourhoods and size. Every alert links to the original listing, so you contact the agent or landlord at the source.
It is ranked first because London listings do not all sit in one place. The portals carried most of the whole-home listings in our data, but letting agent websites, landlord-direct sites, classified boards and build-to-rent operators posted another 11,232 whole-home listings of their own, and most room listings were on flatshare sites.
You choose your neighbourhoods from a London map, set a budget in pounds per calendar month, and decide whether you want rooms in a flatshare as well as whole flats.
The limit: RentReboot is not a place to browse. There is no inventory to scroll through and no messaging with agents. It brings matches to you, so it pairs with a portal instead of replacing one.
Best for
Any London search where you do not want to check six kinds of site every day. Keep the portal you like for browsing, and let RentReboot catch the matches that appear somewhere else.
Strengths
- One saved search across portals, agent websites, landlord-direct sites, flatshares, classified boards and build-to-rent operators.
- London neighbourhoods on a map, with rents in £ pcm.
- Rooms in flatshares only if you ask for them.
- Each alert links to the original listing.
- Price
- Free plan. An optional Premium upgrade is available; its current price and features show during setup.
- Consider instead if
- You want to browse photos and floor plans and book viewings in one product. That is a portal job, and a portal may suit you better.
2. Property portals - best for browsing
The property portals are where most London searches start: filters, maps, photos, floor plans, saved searches and a way to contact the agent. They carried 56,538 of the 69,069 whole-home listings in our data (81.9%).
Many London flats appear on more than one portal at once, so each portal on its own shows much of the same stock. The tracked portal listings asked a median £2,500 pcm, and 28.4% asked under £2,000.
Portal saved searches can email you new matches. Their limit is what never reaches them: some agency stock, landlord-direct lets, most rooms in flatshares, and build-to-rent units advertised on the operator’s own site.
Best for
The browsing half of a search: comparing photos, floor plans and prices, and booking viewings with agents.
Strengths
- The largest share of tracked whole-home listings.
- Maps, filters, floor plans and saved-search emails.
- Free for renters.
- Price
- Free for renters.
- Consider instead if
- You want a room in a flatshare. Flatshare sites carried most of the room listings in our data.
3. Letting agent websites - best for an agency’s full book of lettings
Most London letting agents publish their lettings on their own websites as well as on the portals. In our data, agency websites posted 6,041 whole-home listings (8.7%).
An agency site shows that agency’s full list in one place, and some agencies let registered applicants see new instructions early. The tracked agency listings leaned upmarket: a median £3,000 pcm, with 17.5% under £2,000.
Since the Tenant Fees Act 2019, agents in England cannot charge tenants fees for viewings, references or admin. The rent, a refundable holding deposit and a refundable tenancy deposit are the main payments allowed.
Best for
Renters who know the agencies that cover their area, and renters looking at larger or higher-end flats.
Strengths
- An agency’s full list of lettings in one place.
- Early previews of new instructions at some agencies.
- Free to search, with no tenant fees for viewings or admin.
- Price
- Free to search.
- Consider instead if
- You do not know which agencies cover your area. A portal or an alert service saves you checking dozens of agency sites.
4. Landlord-direct sites - best for renting without an agent
Landlord-direct sites let private landlords advertise and manage a let without a letting agent. In our data they posted 2,676 whole-home listings (3.9%) and 953 room listings.
The tracked whole-home listings were cheaper than the portals: a median £2,250 pcm, with 37.2% under £2,000. Dealing with the landlord can also make viewings and questions faster.
The same rules apply without an agent. A landlord in England cannot ask for more than one month’s rent in advance, cannot accept an offer above the advertised rent, and must protect your deposit in a government-approved scheme. Never pay before you have seen the flat and signed a tenancy agreement.
Best for
Renters who want to deal with the landlord directly and who are comfortable checking the details themselves.
Strengths
- No agent between you and the landlord.
- Lower median rents than the portals in our data.
- Whole flats and rooms.
- Price
- Free for renters to search.
- Consider instead if
- You want an agent to handle references, check-in and repairs. An agency let may suit you better.
5. Flatshare sites - best for a room in a shared flat
Flatshare sites list rooms in shared flats and help you find flatmates. They carried 8,405 of the 12,074 room listings in our data (69.6%), and only 1,299 whole homes.
Rooms are the cheapest way into most London neighbourhoods. Across all tracked room listings, the median ask was £950 pcm.
Meet the flatmates before you commit, ask who holds the tenancy, and get any agreement in writing. If the person letting the room is a tenant, check that the landlord allows subletting.
Best for
Renters on a tight budget, newcomers to London, and anyone who would rather share than live alone.
Strengths
- Most of the tracked room listings.
- The lowest entry price into most neighbourhoods.
- Flatmate profiles, not only property details.
- Price
- Free to search; some sites charge for early access to new listings.
- Consider instead if
- You want a whole flat. The portals carry far more whole-home listings.
6. Build-to-rent operators - best for professionally managed new buildings
Build-to-rent operators own and run whole purpose-built rental blocks, often with on-site staff, gyms and shared spaces. Their own websites posted 350 tracked whole-home listings (0.5%).
The tracked listings asked a median £2,600 pcm, and only 4.9% asked under £2,000. In return you get one professional landlord for the whole building and a single point of contact for repairs.
Operators often show live unit availability on their own site. If you like a building, check its site directly or set an alert for its area.
Best for
Renters who want a newer flat with amenities and professional management.
Strengths
- Professional management and on-site staff.
- Amenities such as gyms and shared workspaces.
- Live unit availability on the operator’s site.
- Price
- Free to search.
- Consider instead if
- Your budget is under £2,000 pcm. Few build-to-rent listings in our data were under that.
7. Classified boards - best for budget lets, with extra care
Classified boards carry posts from landlords, agents and tenants. In our data they posted 2,165 whole-home listings (3.1%) and 226 rooms.
They had the highest share of cheaper whole homes: 46.0% asked under £2,000 pcm, against 28.4% on the portals.
They also need the most care. Agents sometimes re-post the same flat, and scams are more common here than on other kinds of site. Never pay a holding deposit before a viewing, never send money abroad, and remember that a holding deposit in England cannot be more than one week’s rent.
Best for
Budget searches by renters who are confident checking a listing and a landlord themselves.
Strengths
- The highest share of whole homes under £2,000 pcm.
- Posts from small landlords that may not reach a portal.
- Free.
- Price
- Free.
- Consider instead if
- You want verified agents and consistent photos. A portal is safer ground, and an alert service can watch the boards for you.
Method
How we measured these site types
Counts come from RentReboot’s London listing data. We took every London listing first seen from 12 to 30 September 2026 and split it into whole homes (69,069) and rooms (12,074), using the room flag on each listing.
The counts are listings, not distinct flats. The same flat on two portals counts twice, so the shares show where listings appear, not how many different flats each kind of site has. They also show what RentReboot collected, not the full inventory of each kind of site. We do not publish a one-site-only share for London, because London listings often give a street but no flat number, so we cannot match flats across sites reliably.
Rules on fees, deposits and bidding are for England and come from GOV.UK and Shelter, checked on 1 October 2026. Product features come from public information reviewed on the same date. We did not test alert speed on any site.
Disclosure and independence
This guide is written by RentReboot, which is one of the ranked options and holds the top position. This page describes kinds of rental site, not named third-party sites, and no site paid for inclusion or placement.
Questions London renters ask before choosing
What is the best website to find a flat to rent in London?
Use two: a property portal for browsing and RentReboot for alerts. In September 2026 the portals carried 81.9% of tracked London whole-home listings, but agency websites, landlord-direct sites, classified boards and build-to-rent operators posted another 11,232 listings of their own, and flatshare sites carried most rooms. RentReboot watches all of these and emails you the matches.
Are the property portals enough to find a London flat?
They show most of the market, not all of it. Letting agent websites, landlord-direct sites and build-to-rent operators also post their own listings, and flatshare sites carried 69.6% of the room listings in our data.
How do I find a room in a London flatshare?
Start on the flatshare sites, which carried 8,405 of 12,074 tracked room listings. The median room asked £950 pcm. Meet the flatmates, ask who holds the tenancy, and get the agreement in writing.
Can a landlord or agent ask me to pay more than the advertised rent?
Not in England since 1 May 2026. Under the Renters’ Rights Act, landlords and agents must advertise an asking rent and cannot ask for, encourage or accept offers above it. They also cannot ask for more than one month’s rent in advance.
How much deposit can a London landlord ask for?
A holding deposit of up to one week’s rent, and a tenancy deposit of up to five weeks’ rent when the annual rent is under £50,000 (six weeks at £50,000 or more). The tenancy deposit must be protected in a government-approved scheme.
Do London letting agents charge tenant fees?
No, for most fees. The Tenant Fees Act 2019 bans fees for viewings, references and admin in England. Rent, a refundable holding deposit and a refundable tenancy deposit are the main payments allowed.
How much does it cost to rent a flat in London in 2026?
The median tracked whole-home listing in September 2026 asked £2,500 pcm. It depends on where you look: landlord-direct listings asked a median £2,250, letting agent websites £3,000, and rooms in flatshares £950.
Sources and scope
Counts come from RentReboot’s London listing data, 12 to 30 September 2026. Features come from public information reviewed on 1 October 2026.
One saved search across London
Set your budget, neighbourhoods and flat size once. RentReboot watches the portals, agency websites, landlord-direct sites, flatshares and build-to-rent operators, and emails you the matching listings.
Set up London alerts