In short
Excess construction charges (ECC) are charges on top of the standard connection charges when installing a leased line needs more engineering than normal, such as new duct. For BTnet, you can agree an ECC limit in your order. Within it, BT proceeds; above it, BT may re-quote, and you either accept or the order for that site is cancelled.
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What excess construction charges are
Every BTnet order has service introduction charges, the standard one-off charges for connecting the service. BT's terms define Excess Construction Charges (ECC) as any charges in addition to those, needed to install the service or part of it, where the work exceeds the level normally required.
In plain words: if the survey shows your site can be reached in the normal way, there is no ECC. If reaching your site needs extra building work, the extra cost of that work may be passed on as ECC.
ECC is not a hidden fee or a penalty. It reflects the fact that a leased line is a physical connection built to one building, and some buildings are harder to reach than others. You may also see it referred to as Openreach excess construction charges, because Openreach builds and maintains much of the local access network that dedicated lines use. Whatever the source of the work, on a BTnet order the ECC process you deal with is the one in BT's terms.
What can lead to ECC
The survey decides whether ECC applies, so nobody can tell you for certain beforehand. These are typical reasons extra engineering is needed for a dedicated line:
- No usable duct to the building, so new duct has to be laid
- Digging and civil works in a pavement, road or verge, which can also need permits and traffic management
- A long route from the nearest suitable point on the network
- Blocked or collapsed duct that has to be cleared or replaced
- Crossing private land, such as a business park road or a neighbour's land, which may also need a wayleave agreement
- Work on or inside the building beyond the normal level, such as a new entry point
- A second, separate route for resilient BTnet, where route separation needs new infrastructure
Any site can need extra work, wherever it is, and many need none. The site survey is where this is confirmed.
How BT handles ECC: the agreed limit
BT's terms give you control through an ECC limit that can be set out in your order. After the survey, what happens depends on how the cost of the extra work compares with that limit:
| Survey finding | What BT's terms say happens | Your decision |
|---|---|---|
| No extra engineering needed | No ECC; BT gives a Customer Committed Date | None needed |
| Extra work within your agreed ECC limit | BT proceeds with delivery once the additional works are complete | None needed: you agreed the limit in the order |
| Extra work above your agreed limit | BT may provide a new quote for the additional ECC | Accept and BT proceeds, or do not accept and BT cancels the order for that site |
| Extra work and no ECC limit in the order | BT may provide a new quote for the ECC | Accept and BT proceeds, or do not accept and BT cancels the order for that site |
If you do not accept a new quote, BT's terms say BT cancels your order for the affected site and is not required to provide the service there. BT's terms also say ECC set out in the order is invoiced up to the agreed limit.
The practical choice is the size of the limit. A limit lets work carry on without another decision point, which can help the date. Setting no limit, or a low one, means you see and approve any ECC before it is committed, at the cost of an extra step. We explain the trade-off for your site when we quote.
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If you cancel after agreeing ECC
Cancelling once ECC is in play has its own rules under BT's terms:
- Work already done is charged. If you agreed to ECC and then ask to cancel, you pay the full cost of additional work specifically incurred before BT received the cancellation request. BT tells you what those costs are.
- Cancellation charges may also apply. Once BT has confirmed the Customer Committed Date, cancelling attracts cancellation charges based on the bearer type. See BTnet contract terms.
- Declining a re-quote is different. If the survey finds ECC above your limit and you do not accept BT's new quote, BT cancels the order for that site under its terms rather than continuing.
The lesson is to make the ECC decision carefully at the start, and to raise any doubts before work begins rather than part way through.
ECC and your delivery date
Extra engineering takes time as well as money. On jobs that need it:
- The date may be estimated. BT's terms provide for an estimated date where BT cannot give a Customer Committed Date.
- Re-quotes add a step. If ECC goes above your limit, work waits for your answer to the new quote.
- Permits and permissions take time. Street works and wayleaves run on their own timetables.
BT's help pages say installation can take up to 70 working days, depending on the survey. Jobs with excess construction are where the survey matters most. See BTnet lead times for how dates are set and committed.
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How to reduce the risk of ECC surprises
You cannot remove the possibility of ECC, but you can stop it catching you out:
- Ask for the desktop survey category early. It gives an early sense of how complex delivery is likely to be.
- Decide your ECC limit deliberately. Set it at a level you would accept without a further conversation, or set none if you want to approve any ECC first.
- Give accurate site information. BT's terms allow charges to be reviewed if site information is incomplete or wrong.
- Involve the landlord early. Work on private land or in common parts may need consent as well as engineering.
- Keep options open on timing. If a move date depends on the line, allow for a re-quote and extra works in the plan.
- Think about the bearer. A bearer with headroom avoids a second installation later just to go faster. See bearers and port speeds.
How Forever Communications helps
Forever Communications is an Authorised Supplier for BT, and we explain ECC before you order, not after: what it is, how the limit works, and what the survey might mean for your site. If BT re-quotes, we set out the new figures from BT, what accepting or declining means under BT's terms, and how it affects your date, so you can make the decision with the facts in front of you. We do not publish ECC figures because every site is different; ask us for a quote. We can talk you through the service introduction charges, the recurring charges and any ECC limit proposed for the order, so you can see where any extra engineering would sit.
Contact us with your address to talk through excess construction risk at your site. For how ECC fits into the overall price, see BT leased line cost.
Why buy BTnet from Forever Communications
Forever Communications is part of Forever Group and an Authorised Supplier for BT. We supply BTnet, BT's dedicated leased line internet service, to businesses, schools, charities and public sector organisations, and we help with each step from first enquiry to go-live.
- The right BTnet option for you: we help you choose a speed, bearer, router and resilience option that fits how your sites actually work, from BTnet plans to BTnet speeds
- A clear quote: BTnet is priced per site, so we check availability at your address and set out what is included; see leased line cost
- Installation managed with you: we explain the survey, any wayleave or construction steps and the installation process, and keep you updated on progress
- Connected services in one conversation: phones with BT Cloud Voice, Wi-Fi, firewalls and backup lines, so the whole set-up is planned together
- Help after go-live: we can help with faults, changes and upgrades, with the support arrangements confirmed in your quote
BTnet is a business service. Service levels, lead times and features are BT's and are confirmed at order.
Frequently asked questions
What are excess construction charges?
Charges on top of the standard connection charges when installing a leased line needs more engineering than normal, such as new duct, digging or a long route. Whether they apply is confirmed by survey.
Will I definitely pay ECC on a BTnet line?
No. Many sites need no extra engineering. ECC only applies if the survey finds work above the normal level, and BT's terms let you set a limit in the order and approve anything above it.
What happens if ECC is more than my limit?
BT may send a new quote. If you accept, BT proceeds with the work. If you do not, BT cancels the order for that site and is not required to provide the service there.
Can I cancel after agreeing ECC?
You can, but you pay the full cost of additional work already specifically incurred before BT received your cancellation request, and cancellation charges may apply once a committed date was confirmed.
What are Openreach excess construction charges?
Openreach builds and maintains much of the local access network that dedicated lines use, so ECC is often discussed in those terms. On a BTnet order, the ECC limit, re-quote and cancellation rules you deal with are in BT's terms.
Do excess construction charges affect the installation date?
They can. Extra engineering, permits and any re-quote take time, and where BT cannot give a Customer Committed Date, its terms provide for an estimated date instead.
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