Frequently Asked Questions
Working with NEC
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New End Construction is based in North London and undertakes suitable residential and commercial projects across North, South, East and West London.
Whether we can take on a project depends on its location, scope, programme and access requirements. Contact us with the property address and a brief description of the proposed work, and we will confirm whether it falls within our working area.
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The information required depends on the size and complexity of the project. For an extension, loft conversion or structural refurbishment, we will normally need:
Architectural or measured drawings
Structural drawings and calculations, where applicable
A written specification or schedule of work
Planning and building-control information
Details of the required finishes
The property address
Your preferred timescale
Information about access, parking and occupation of the property
We can discuss the project at an earlier stage, but a detailed and reliable quotation normally requires a sufficiently developed design and clearly defined scope.
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New End Construction can work from drawings and calculations prepared by your appointed architect, designer and structural engineer.
If these have not yet been prepared, we can discuss the professional information the project is likely to require and help identify the appropriate next steps. The quotation will make clear which professional services are included and which appointments must be made separately.
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Yes. NEC can quote for an extension and the associated internal refurbishment as one coordinated construction project.
The work may include structural alterations, plumbing and electrical upgrades, kitchens, bathrooms, flooring, decoration and bespoke joinery. The complete scope must be reviewed before we can confirm the programme and price.
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Ideally, contact us once you have initial drawings or a reasonably clear project brief.
Early contractor input can help identify access, construction, sequencing and specification issues before the design is finalised. However, a detailed quotation usually requires developed drawings, structural information and a sufficiently clear schedule of work.
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Your project will have a named NEC contact responsible for overseeing the agreed construction work and keeping communication organised. Before construction begins, we will explain who your principal contact will be, how site queries should be raised and who is responsible for key decisions, selections and approvals.
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The communication arrangements will be agreed before construction begins. Updates may include site meetings, telephone calls, emails, photographs and written messages, depending on the project.
Important instructions, design changes, additional costs and programme decisions should be confirmed in writing so that there is a clear record for both parties.
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This depends on the nature, scale and sequence of the work.
Remaining in the property may be possible during limited works, but it can be impractical during a complete renovation or where essential services, kitchens, bathrooms or access routes are affected. Occupation can also influence safety, working hours and the project programme.
We will discuss the practical implications before work begins so that suitable arrangements can be made.
Costs and contracts
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The cost depends on the property, size of the extension, structural work, access, specification, finishes and extent of the internal refurbishment.
Older buildings can also contain concealed conditions that are not visible before work begins. For this reason, general cost-per-square-metre figures are only an initial guide and should not be treated as a fixed quotation.
Once the design and scope are sufficiently developed, NEC can review the project information and prepare a project-specific quotation.
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Our quotation will state clearly how VAT has been treated and whether the totals shown include or exclude VAT.
VAT treatment can depend on the type of work and property. Clients should refer to the VAT information shown in the project-specific quotation rather than assuming that every item is treated in the same way.
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The quotation will describe the construction work included and identify known exclusions, client-supplied items, provisional allowances and areas that require further information.
Items such as professional fees, planning charges, building-control charges, party-wall services, utility-company costs, specialist surveys and client-selected finishes may be separate unless expressly included.
Please review the entire quotation and raise any questions before accepting it.
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Payments are normally linked to an agreed project schedule or defined stages of work rather than being left until the end of the project.
The payment dates, amounts and relevant milestones will be set out in the accepted quotation, payment schedule or contract before construction begins. The precise arrangement depends on the size, duration and procurement requirements of the project.
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A variation is work that changes the agreed scope, specification, design or construction requirements.
Where possible, the additional cost and any effect on the programme will be explained and approved in writing before the varied work proceeds. Some concealed or urgent site conditions may require an immediate decision to keep the property safe or prevent delay, but these circumstances will be communicated as soon as reasonably possible.
Written records help both the client and NEC understand what has changed and why.
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Purchasing responsibilities are agreed for each project.
Some products may be supplied by NEC or Albeno, while others may be selected and purchased directly by the client. The quotation or procurement schedule should identify who is responsible for ordering each item, checking quantities, approving specifications and arranging delivery.
Client-supplied products must normally arrive on site by the required date and be suitable for the agreed design and installation.
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Clients should keep a separate contingency for unforeseen work, design development and changes in specification.
The appropriate amount depends on the age and condition of the building and how much investigation has been completed before work begins. Older properties or projects involving extensive structural alteration may justify a larger contingency than straightforward work in a well-understood building.
The contingency is a client-held reserve and should not be treated as part of NEC’s quoted price unless an allowance is expressly included.
Construction process
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Before construction begins, the design, scope, quotation and contract information should be sufficiently clear.
The pre-construction stage may include:
Reviewing drawings and specifications
Confirming structural information
Checking planning and building-control status
Agreeing party-wall responsibilities
Confirming the programme and payment schedule
Allocating purchasing responsibilities
Agreeing access, parking and working arrangements
Recording the condition of retained areas
Confirming communication and decision-making procedures
The exact requirements depend on the project.
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The programme depends on the scope, structural complexity, access, specification, lead times and whether additional work is discovered after construction begins.
Once the design and scope are sufficiently developed, NEC can prepare a project-specific programme. Planning, structural design, party-wall procedures, approvals and procurement happen before or alongside construction and should be considered when planning the overall timescale.
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Most extensions, loft conversions and significant structural alterations require building regulations approval, even where separate planning permission is not required.
Building regulations cover matters such as structural safety, fire safety, insulation, ventilation, drainage, stairs and electrical work. The appropriate building-control route should be confirmed before relevant construction begins.
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You may need to follow the Party Wall etc. Act 1996 if the work affects a shared wall or structure, involves building on or close to a boundary, or includes certain excavations near a neighbouring building.
Not every project requires a party-wall award or surveyor, but the requirements should be checked early. If formal notice is required, sufficient time must be allowed before the relevant work begins.
A party-wall surveyor can provide advice specific to the design and neighbouring properties.
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The required protection depends on which parts of the property will remain occupied or retained.
Before work starts, we agree access routes and identify areas requiring protection. Measures may include floor coverings, dust barriers, temporary screens, protection to stairs and retained finishes, controlled storage areas and regular waste removal.
Construction work inevitably creates some dust, noise and disruption, but careful planning can help limit its effect on retained parts of the property.
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As the project approaches completion, the work is inspected and outstanding items are recorded on a snagging list.
The relevant trades then address the agreed items. Completion arrangements may also include final inspections, demonstrations of installed equipment, removal of temporary protection and handover of available certificates and documents.
The contract or agreed project terms should define completion, the snagging process and any applicable defects arrangements.
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The documents available depend on the work carried out and the professionals or registered installers involved.
They may include:
Building-control completion documentation
Electrical installation certificates
Gas-related certificates
Window or door compliance certificates
Product and manufacturer warranties
Roofing or waterproofing warranties
Commissioning information
Operating and maintenance instructions
The required handover documents should be identified during the project. Some certificates are issued by external professionals, building control or specialist installers rather than NEC directly.
Period renovations and joinery
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Where practical and consistent with the design, original features can be retained, repaired or incorporated into the completed renovation.
These may include fireplaces, cornices, mouldings, timber floors, doors, panelling and other architectural details. Their condition should be assessed before a final decision is made. Where retention is not practical, appropriate replacement or reproduction may be considered.
Listed buildings and some properties in conservation areas may require additional consent before historic fabric is altered.
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Older buildings can contain defects that are not visible until floors, walls, ceilings or previous alterations are opened.
Examples may include damaged timber, inadequate earlier structural work, damp, deteriorated services or drainage problems. If a concealed issue is discovered, we will record it, explain its likely effect and discuss the available response.
Where possible, the cost and programme implications will be agreed in writing before additional remedial work proceeds. Specialist investigation or design may be required.
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Energy performance can often be improved as part of a renovation, subject to the property’s construction and the applicable building regulations.
Possible measures include roof and wall insulation, improved glazing, draught reduction, heating upgrades, better controls and improved ventilation. The correct approach is particularly important in older buildings, where unsuitable materials or insufficient ventilation can create moisture problems.
The proposed measures should be considered as part of the overall design rather than selected in isolation.
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Yes. Bespoke joinery from Albeno can be considered as part of the wider construction programme.
Early coordination allows dimensions, electrical positions, lighting, finishes, flooring and installation requirements to be planned before the relevant building work is completed. This can include kitchens, wardrobes, fitted furniture, doors, timber windows, panelling and made-to-measure storage.
The quotation and programme should identify whether the joinery is contracted and invoiced separately through Albeno.
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Some complete renovations can be divided into phases, depending on the layout, services, structural work, budget and whether the property will remain occupied.
Phasing may make the project more manageable, but it can also increase the overall programme and create duplicated protection, access or preliminary costs. Some work—particularly structural alterations, heating, wiring and plumbing—is often more efficient when planned across the whole property.
We can review the proposed scope and discuss whether phased construction is practical.
Questions regarding loft conversions
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A loft conversion will normally require building regulations approval. Depending on the property and design, you may also need planning permission, a Lawful Development Certificate, listed building consent, party-wall notices or an agreement with a freeholder.
A structural engineer will usually be needed to design or confirm structural alterations. Ecological assessment may also be required where there is a reasonable possibility of protected species such as bats.
The exact requirements should be confirmed for the individual property before work starts.
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Some loft conversions and roof enlargements to houses can be completed under permitted development rights, provided the proposal meets the applicable limits and conditions. These include limits on additional roof volume—normally 40 cubic metres for terraced houses and 50 cubic metres for detached and semi-detached houses—together with restrictions relating to height, position, materials and certain windows.
Permitted development rights described for houses do not apply in the same way to flats or maisonettes and may be restricted for listed buildings, designated areas or properties affected by an Article 4 direction. Even when planning permission is not required, building regulations approval will normally be needed.
It is sensible to obtain property-specific advice and consider applying for a Lawful Development Certificate before work begins.
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Common options include rooflight, dormer, hip-to-gable, mansard and L-shaped loft conversions. The most suitable option depends on the existing roof structure, available head height, staircase position, property type, planning constraints and the amount of usable space required.
A site assessment and drawings are normally needed before confirming which form of conversion is practical.
The most common types of loft conversions are:
• Dormer loft conversions: This is the most popular type of loft conversion. It involves adding a dormer window to the roof, which creates more headroom and space. Dormer loft conversions can be either flat-roofed or pitched.
• Hip-to-gable loft conversions: This type of conversion involves extending the roof at the gable end, creating a vertical wall. This can add a significant amount of space to the loft.
• Mansard loft conversions: This type of conversion involves sloping the roof at a steeper angle, creating a more attic-like space. Mansard loft conversions can be very stylish, but they can also be more expensive than other types of conversions.
• L-shaped loft conversions: This type of conversion involves adding a dormer window to one side of the roof and extending the roof at the other side. This can create a large, L-shaped loft space.
You can read more about the different types here.
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The construction period depends on the type and complexity of the conversion, structural work, access, specification and whether other parts of the house are being refurbished at the same time.
We provide a project-specific programme once the drawings, structural information and scope are sufficiently developed. Planning, party-wall procedures, design work and procurement take place before the construction period and should also be included in the overall timeline.
Typical timelines vary between 12 and 16 weeks.
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Planning permission is not always required for a loft conversion, but it depends on the property and the proposed roof alterations. We recommend checking the proposal against current permitted-development rules and obtaining professional confirmation before construction begins.
Questions regarding permissions and agreements
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The following permissions may be needed for a loft conversion:
• Building regulations approval: Building regulations approval ensures that the work complies with building regulations, which are designed to ensure the safety of people and property.
• Party wall agreement: If your loft conversion involves any work to the party wall, you will need to get a party wall agreement from your neighbour. Read more about party wall agreements here.
• Tree preservation order: If your property is located in an area with a tree preservation order, you may need to get permission from the local authority before carrying out any work that could affect a tree.
• Bat survey: If you think there may be bats living in your loft, you will need to have a bat survey carried out. Bats are a protected species and, if your loft is home to a roost of them, you may need to obtain a mitigation licence to carry out the work.
In addition to the above permits, you may also need to apply for a planning permission if your loft conversion exceeds certain limits and conditions. You can read more about planning permissions here.
To check if you need planning permission for a loft conversion, you can use a handy tool on the Planning Portal website.
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The permissions you need for a kitchen extension will vary depending on your location and the size and scope of the project. In general, you will need to obtain a planning permission from your local council. This permission might also be needed depending on the size and location of the extension.
Here are some of the most common permissions you may need for a kitchen extension:
• Planning permission: A planning permission is usually required for any construction project that alters the structure of a building. This includes kitchen extensions, as well as other projects such as adding a bathroom, garage or bedroom.
• Building regulations approval: Building regulations approval is required to ensure that your kitchen extension complies with all applicable building codes and standards. This approval is typically granted by your local council.
In addition to these permissions, you may also need to obtain permissions from other entities, such as the local utilities companies. These permissions are typically required for projects that involve changes to the electrical, plumbing or gas systems.
It is important to note that the requirements for permissions can vary from one council area to another. Therefore, it is always best to check with your local council to determine the specific permissions you will need for your kitchen extension.
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Permitted development is a type of planning permission that allows certain types of development to be carried out without the need to apply for planning permission from the local planning authority. In England, permitted development rights are set out in the Town and Country Planning (General Permitted Development) (England) Order 2015.
There are a wide range of activities that are permitted development, including building a single-storey extension to the rear of a house and making changes to the internal layout of a house.
Permitted development rights are not absolute, and there are a number of conditions that must be met in order to qualify. For example, the size and location of any extension must be within certain limits, and there may be restrictions on the type of materials that can be used.
Permitted development rights apply differently to houses, flats and maisonettes and may have been removed or restricted by an Article 4 direction, a previous planning condition or the property’s listed status. A Lawful Development Certificate can provide formal confirmation that proposed work is lawful.
If you are considering carrying out any development that may fall within permitted development, it is important to check with your local planning authority to confirm whether your proposed works are permitted. You can do this by contacting your local planning department or by using the Planning Portal website.
You can read more about permitted development here.
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The Party Wall etc. Act 1996 may apply where work affects a shared wall or structure, involves building on or near a boundary, or requires certain excavations close to a neighbouring building.
If the Act applies, the building owner must serve the appropriate written notice before work begins. The notice period is normally at least two months for work to an existing party structure and one month for certain boundary or excavation work.
A neighbour normally has 14 days to consent to a notice. If they dissent or do not respond, the Act’s dispute-resolution procedure applies and one or more party-wall surveyors may need to be appointed. No response should not be treated as permission to proceed.
Party-wall matters are separate from planning permission and building regulations. A party-wall surveyor should advise on the requirements for the individual project.
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Building regulations approval is normally required when a loft is converted into liveable accommodation. The design may need to address structural strength, new floors and beams, staircase design, fire protection and escape, insulation, ventilation, sound insulation, glazing and electrical safety.
In a typical two-storey house, creating a new storey can require a protected escape route, suitable fire-resisting doors and mains-powered interlinked smoke alarms. The exact solution must be designed for the property and agreed with the relevant building-control body.
You can read more about building regulations here.
Questions regarding extensions
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A house extension may require planning permission, prior approval or confirmation that it falls within permitted development rights. Most extensions also require building regulations approval.
Depending on the property and design, the project may additionally involve structural calculations, party-wall notices, drainage approval, Thames Water build-over consent, listed building consent or freeholder consent.
Requirements vary according to the property and proposal, so they should be confirmed before construction starts.
Miscellaneous questions
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Depending on the project, New End Construction can coordinate the principal building trades needed for extensions, loft conversions and refurbishments. Bespoke joinery can be incorporated through our sister company, Albeno.
We are also able to offer architectural design and structural engineering services, and recommend party-wall specialists other specialist professional appointments depending on the project. We will explain which services are included in our quotation and which need to be appointed separately.
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Yes. Through our sister company, Albeno, bespoke kitchens, wardrobes, fitted furniture, internal and external doors, timber windows and other made-to-measure joinery can be coordinated with the wider building project.
Planning the joinery early helps coordinate dimensions, electrical positions, lighting, finishes and installation requirements.