Every day, 3.7 million people use the Tube and new lines and extensions are all under way to boost the system's capacity.
Where railway lines go, home buyers follow, and transport upgrades often trigger wider regeneration. It happened with the recent Overground improvements and it is happening again.
Here are four transport upgrades to watch out for...
Property prices along the east-west route have been steadily rising since work began on the high-speed Crossrail line seven years ago.
Abbey Wood, in south-east London, is set to experience a more “transformational impact” than anywhere else because journey times to central London will be halved.
However, the Elizabeth line's impact is far reaching and at the only other station south of the river, Woolwich, 5,000 homes are being built in waterfront towers.
Meanwhile, at Southall, in the north-west, more than 3,500 homes are being built by the Grand Union canal, with the first set to be unveiled next year.
Where to buy in 2016: key transport upgrades
Where to buy in 2016: key transport upgrades
1/14 Embassy Gardens
If you want to get ahead in property, our advice is to search out areas that are benefiting from infrastructure improvements and large investment. Often, places that are not in the immediate spotlight, but next to regeneration zones, benefit through the ripple effect. Oval and Stockwell, close to the new district being built at Nine Elms in Battersea, are good examples. Homes at Embassy Gardens in Nine Elms start from £630,000. Call 020 7062 8940.
2/14 Nine Elms
Design for our times: London is seeing many proposed plans for new river crossings, such as Thomas Heatherwick's famous Garden Bridge on the Southbank, pictured left.
Another proposal is for a bridge at Nine Elms in Battersea that would link Wandsworth to Westminster. Transport for London deems it a valuable addition to the area.
3/14 Canary Wharf
Better connected: the new Crossrail route will link many London areas to jobs at Canary Wharf.
4/14 Old Oak Common
Building a community: a transport "superhub" is planned at Old Oak Common, north of Wormwood Scrubs. Regeneration will have a huge impact on surrouding areas, such as Acton, Harlesden and Willesden.
Game changer: Woolwich’s new Crossrail station will vastly improve connections from what is one of London’s cheapest areas to live - for now.
Nowhere along Crossrail’s route will the new train service’s impact be more marked than around its southern spur, from Whitechapel to Abbey Wood in south-east London. A new station is being built at each stop and at peak times, 12 trains an hour will take passengers to Docklands, the City and the West End.
7/14 Southmere Village
Residents at the new Southmere Village in Thamesmead will be served by Abbey Wood Crossrail station. The village features new homes plus a library, shops and community square. Contact Peabody on 0300 123 1237
8/14 Royal Docks
From £399,995: 3,385 homes are being built at Royal Wharf, a new riverside district next door to Canary Wharf and nearly fifty per cent will of this neighbourhood will be open green space. Call 0800 160 1200.
9/14 Upper Lea Valley
On the right track: new plans for Crossrail 2 could make Lea Valley Park more accessible for commuters. The line could unlock 200,000 new homes for the area - connecting homes with job opportunities
Right now, Zone 3 is seeing the biggest demand for property, due to the combination of lower prices and reasonable commute times to the centre. Crossrail will help make Zone 3 areas more accessible, while regeneration is already injecting fizz into previously dull districts. Beckton features many newly created parks as well as the London Regatta Centre in Dockside Road.
11/14 Royal Docks
Already home to London’s only designated Enterprise Zone and with excellent transport links, the regeneration of E16 will create a centre for global trade, with thousands of jobs and new homes (scroll right...)
12/14 Royal Docks
Flats at Hoola in E16 will benefit from a crossing between Royal Docks and Charlton Riverside and value will immediately be further increased by its proximity to Crossrail. Call 0207 272 1121
13/14 Bond Street
Bond Street Crossrail station will be the heart of a wider commercial zone. From 2018, 220,000 passengers are expected to use Bond Street London Underground and Crossrail station every day.
14/14 Barking Riverside
Transport for London has unveiled proposals for 13 new river crossings, from Fulham in the west to Dartford in the east. A new tunnel will be part of an Overground extension to Barking Riverside.
2. Northern line
Scheduled to open in 2020, the Northern line extension is the capital’s next major Tube upgrade.
Two stations are being built in the south: one at Nine Elms, at the Vauxhall end of Wandsworth Road, the other at the Battersea Power Station complex. Plans are also being made for a further extension west to Clapham Junction.
Costing £1.5 billion, and funded by private developers and landowners, the extension will open up new areas of the city to homebuyers, including Oval, Vauxhall Park, Lambeth Walk and Kennington.
3. Bakerloo Line: south-east London
Adding two new stations on Old Kent Road, near the junctions with Albany Road and Asylum Road, is the council's preferred plan for a Bakerloo line extension from Elephant & Castle to Lewisham.
This is still subject to consultation, and the trains aren't scheduled to start running for at least another 10 years, but this swath of Southwark is already on the fast-track for change.
Up to 20,000 new homes - with a third being "affordable" - schools and parks are part of a master regeneration plan, along with a new Overground station called New Bermondsey.
There are plans to reform the high street, with traditional owner-run shops and cafés, and there's even suggestions of a further extension to Kent, via Catford and Bromley.
4. Crossrail 2
Construction of Crossrail 2 is set to start in 2020, two years after the Elizabeth line is due to open.
Beginning in Hertfordshire and ending in Surrey, the exact route is still to be confirmed but is likely to go via Waltham Cross, New Southgate, Seven Sisters, Angel, Euston and Victoria. The line will connect with the suburban network and the Tube system and include new stations.
The £27 billion project is expected to trigger the building of 200,000 new homes, creating new homes hotspots along the route.
Four hotspots to watch out for are Enfield and Tottenham Hale in north London, and Chelsea and Clapham Junction in the south.
At Meridian Water, a new station in Enfield, the first of 10,000 new homes are set to launch next year, offering direct links to Liverpool Street.
Already on the Victoria Line and Stansted Express route, Tottenham Hale is one of the best connected Zone 3 stations. As one of the Mayor's 10 new housing zones, regeneration of the area is being fast-tracked, and up to 1,200 new homes are being built.
Despite local protests, the council is backing a new station for the Tube-starved King's Road in Chelsea. Transformation of the eight-acre site has already started and homes priced from £1.55 million are on sale.
Clapham Junction is already Europe’s busiest interchange, and it's set to get even busier with its Crossrail station and Northern line extension. A 57-acre housing zone covering the area from the station to the Battersea waterfront is the main focus of the area's wider regeneration.