Off-Mains Services Project Questions Checklist

Put a written enquiry to each utility undertaking about what exists for the plot, and note what information they need before they can answer.

Enquiries of this kind are rarely answered on the spot, so starting them while the design is fluid keeps options open.

Ask each undertaking what a connection would involve even where you expect the answer to be discouraging, and record what they say.

The answer is sometimes different from what a seller or neighbour assumed, and it is only obtainable from the undertaking.

Note whether the plot has ever had a supply of any kind, since land that has never been connected is a different proposition from land where a house stood.

A plot with no history of supply raises arrangements an owner does not anticipate, and it is worth flagging at the first conversation.

Ask neighbouring properties what arrangements they have and how they are served, recording their answers as accounts rather than as facts about your plot.

Neighbours are the quickest source of a realistic picture, and their arrangements frequently reveal an option nobody mentioned.

Record every answer with the party, the date and the terms in which it was given, rather than carrying a general impression forward.

These answers are relied on months later by people who were not present, and a dated note is what makes that possible.

Ask whether a network is expected to extend towards the plot at any point, and record the answer without planning around it.

It occasionally changes a decision about how permanent an arrangement should be, which is the only reason to ask.

Ask what kind of private water source might be available on the plot and who establishes whether one exists at all.

This has to be established by investigation, and it is the question every later decision about water depends on.

Whether a water source exists on a plot, and what it yields, is established by a qualified specialist. Nothing is inferable from a neighbour's experience.

Ask your local authority who regulates a private water supply in your area and what obligations attach to one, and record who told you.

Private supplies carry obligations that vary by location, and the owner is the party they attach to.

Ask what treatment and testing a private supply involves, who carries each of those out over time, and which of them fall to the household.

This is the recurring obligation owners are least prepared for, and it starts the day the building is occupied.

Ask what equipment a private supply involves, how much space it needs, and where it would have to sit relative to the building.

Plant space is routinely discovered after a layout is fixed, and it is far easier to allow for at the brief stage.

Ask whether any supply would be shared with another property, and what is agreed in writing about maintenance and responsibility.

Shared supplies are common, usually informal, and the source of the most difficult disputes between neighbours.

Ask what happens when a private supply fails, who is called, and whether there is any fallback for the household.

This is the question that tells a household what they are really taking on, and it is rarely volunteered.

Ask early what would be involved if no foul connection is available, and record the answer before a preferred house position becomes fixed.

Drainage arrangements can move a house across a plot, so the question deserves asking before a position settles in everyone's mind.

Ask who determines whether any discharge is permissible, and confirm with your local authority and the relevant authority rather than assuming.

This is determined by parties outside the design team, and a layout built on an assumption here is a fragile one.

Whether any discharge is permissible is determined by the relevant authority, never by a designer, a neighbour or an owner.

Ask how much land a given arrangement needs, where on the plot it could sit, and what has to be established about the ground there.

Foul drainage frequently takes the part of a plot a household imagined as garden, which is better discovered early.

Ask what the arrangement has to be kept clear of, including buildings, boundaries, water and anything a neighbour relies on.

These relationships constrain a layout considerably and are set by others rather than chosen by the design.

Ask how the arrangement is emptied or serviced, what vehicle has to reach it, and whether the access allows that.

Access for servicing is designed in or it is not, and afterwards it is very difficult to retrofit.

Ask what the household has to do to keep the arrangement working, and what happens if that is not done.

The obligation lands on the owner for the life of the building, and the answer shapes whether it is the right choice.

Ask what power arrangements are realistically available for the plot and who would establish that, treating any neighbour's experience as an account rather than a guide.

Arrangements differ plot by plot, and the answer comes from the undertaking and from a qualified professional.

Ask what on-site generation or storage would involve in space, position and maintenance, and where each element would have to sit.

These elements have real spatial consequences that owners think about only after a layout is drawn.

Ask what fuel would have to be delivered, how it is stored, and what vehicle has to reach the store to fill it.

Delivery access constrains where a store can sit, and the constraint is set by the vehicle rather than by preference.

Ask what any fuel store has to be kept clear of, and confirm locally what applies rather than working from what a neighbour has done.

These separations are set by others, and a neighbour's arrangement may predate whatever now applies.

Requirements for storing fuel vary by location and by type. Confirm what applies with your local authority and a qualified professional.

Ask what happens during an interruption to any arrangement, what the household would be without, and for how long that might realistically be.

Off-mains properties experience this differently from connected ones, and households plan for it poorly without being asked.

Ask whether any equipment produces noise or emissions, where that places it on the plot, and what neighbours would experience.

Position is often decided by these considerations rather than by convenience, and it is best settled before a layout hardens.

Record whether mobile signal and internet connectivity are usable while standing on the plot, in different parts of it and at different times.

Many owners discover the answer only after moving in, and it is a straightforward thing to establish beforehand.

Ask neighbours what arrangements they use for connectivity and how well each works, recording their answers as accounts rather than as guarantees.

Local experience is the most realistic picture available, and it frequently reveals an option nobody advertised.

If anyone in the household works from home, put connectivity in the brief alongside the room list rather than treating it as a later detail.

It is a brief item because it can change which rooms are wanted and where they should be.

Ask what equipment any arrangement requires, where it has to be mounted, and whether that affects the appearance of the building.

Some arrangements need a position with a clear outlook, which is a design constraint rather than a fitting choice.

Ask whether mounting any equipment on the outside of the building needs permission, and confirm that with your local authority rather than assuming the answer.

This catches people out on plots with designations, and the question is cheap to ask early.

Only your local authority can say what permissions apply to external equipment on your property.

Note which household arrangements would stop working without connectivity, including anything to do with heating, security, monitoring or the water arrangement itself.

Off-mains properties frequently make connectivity load-bearing without anyone noticing, which is worth knowing.

Mark every arrangement you have discussed onto a single plan, including the land each one needs and the access each one requires.

The total is what surprises people, and no single conversation produces it because each is held separately.

Note which areas cannot be built over, planted on or driven across, and treat that as a constraint on the layout rather than a detail.

These constraints are frequently discovered after a layout exists, at which point they are expensive to accommodate.

Note how much space inside the building each arrangement needs, and ask where that room would be and how it is reached.

Internal plant space on an off-mains property is substantial and is usually allowed for far too late.

Ask which equipment makes noise inside the building and what that means for where the plant space should sit.

Plant rooms end up next to bedrooms on plenty of projects, and the question is easy to ask at the brief stage.

Ask how each item of plant is reached for servicing and whether anything has to be removable, and record the answers together.

Servicing access decides whether a future replacement is straightforward or destructive, and it is designed in or not at all.

Check what usable outdoor space remains once everything is marked, and decide whether that is acceptable to the household.

This is a household judgement that nobody else can make, and it belongs before a layout rather than after.

Confirm with your local authority which permissions or notifications apply to each arrangement, and record who told you, when and in what terms.

Requirements vary by location and by arrangement, and a dated note of a conversation is traceable in a way that understanding is not.

Only your local authority and the relevant authorities can say what applies to your plot. Nothing here determines any requirement.

Ask which applications your designer or specialist would prepare and which remain yours, and record the split before anyone assumes it.

Different practices divide this differently, so the answer belongs in your notes rather than in your expectations.

Record whether any arrangement would need to cross or sit on land you do not own, and take that to a suitably qualified adviser.

Private rights sit outside the public process entirely, which makes them easy to miss and awkward to fix later.

Rights over land are a legal matter. Put anything you find in title documents to a qualified adviser rather than interpreting it yourself.

Ask what is already shared with neighbouring properties, whether anything is written down, and who has been maintaining it.

Informal arrangements hold until something fails, and writing them down gives everyone the chance to confirm them properly.

Ask what a neighbour could do on their own land that would affect your arrangement, and whether anything protects against that.

Private arrangements can be affected by ordinary activity next door, and owners rarely consider it until it happens.

Record any agreement reached with a neighbour in writing at the time it is made, however friendly the conversation was and however settled it feels.

Friendly arrangements survive until a property changes hands, and a written record is what carries them across.

List every servicing, testing, emptying and checking obligation each arrangement brings, and put them in one place rather than in separate documents.

Each is described separately by the party that installed it, and nobody assembles the combined list unless the owner does.

Ask who carries out each obligation, whether it needs a particular kind of specialist, and how such a person is found locally.

Availability of the right specialist varies considerably by area, and it is worth knowing before you depend on it.

Ask what records have to be kept for each arrangement, for how long, and who would ever ask to see them.

Some of these records are asked for at a sale, which is exactly when nobody can find them.

Ask your adviser what a future buyer's solicitor would want to see about each arrangement, and start collecting it now.

Off-mains arrangements are a standard area of enquiry at a sale, and assembling it late is what delays transactions.

Write a plain-language account of what serves the building and what has to be done to keep it working, and keep it with the property.

A future owner inherits the obligations without the conversations, and this document is the only thing that bridges that.

Make sure everyone living in the building knows what the arrangements are and what they must not do to them.

Most damage to off-mains arrangements is ordinary household activity by somebody who was never told.