CM11 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 444 postcodes across 2 sectors in Basildon.
Full fibre
0%
Gigabit
83%
Superfast
96%
Postcodes
444
CM11 covers 444 postcodes across Basildon with 82.6% gigabit and a notable 12.9% in the mid-speed tier.
Broadband speeds in CM11
Share of CM11 premises by the fastest download speed available, averaged across all 444 postcodes in the district.
Gigabit capacity reaches 82.6%, leaving 17.4% of premises on older infrastructure. Speed split is informative: 82.6% hit 300 Mbps or faster, 12.9% land at 30 to 300 Mbps (the larger mid-speed share among Basildon areas here), and 1.9% stay below 10 Mbps. Full fibre is not deployed locally, recorded as zero. No below-USO premises and no wireless broadband. The 12.9% mid-speed rate is substantial, indicating pockets of legacy fibre or copper that predate cable build-out. These postcodes are typically inner Basildon suburbs or smaller residential streets not yet cabled. The locality is not poorly served by any measure; superfast at 30 Mbps and above is adequate for most households; but property choosers should verify postcode before committing to location.
Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.
Connectivity in detail
Below 10 Mbps USO
0%
Premises unable to get the 10 Mbps universal service minimum
Fixed wireless
0%
Premises that can use a fixed wireless access service
Broadband by sector
CM11 splits into 2 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.
| Sector | Postcodes | Superfast | Full fibre | Gigabit |
|---|---|---|---|---|
| CM11 1 | 177 | 96% | 0% | 79% |
| CM11 2 | 267 | 95% | 0% | 85% |
All CM11 1 postcodes (177)
All CM11 2 postcodes (267)
Best deals
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Living in Basildon
The 12.9% mid-speed rate is substantial, indicating pockets of legacy fibre or copper that predate cable build-out. These postcodes are typically inner Basildon suburbs or smaller residential streets. The locality is not poorly served, superfast is adequate for most, but property choosers should verify postcode before committing.
Remote worker score
54/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
CM11 broadband FAQs
Why do some Basildon postcodes have lower speeds?
Cable deployment has been gradual. Older residential zones often retained fibre or copper longer. Newer build and town centres have gigabit cable.
Is 30 to 300 Mbps good enough?
Yes, for most households. Multiple simultaneous users or high-bandwidth work (4K video editing) may benefit from gigabit, but superfast is standard.
What is the upgrade outlook?
Basildon council may have fibre or cable expansion plans. Check local authority announcements or call your provider for deployment timelines.
Should I prioritise a gigabit postcode?
If available, yes. But 82.6% have it here, so your options are broad. Use the Checker to compare providers.
Neighbouring districts
Check your exact postcode
Every postcode in CM11 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.
Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources