Architect plans · Build · Finish
Loft Conversion in Finchley
We build full loft conversions in Finchley from the client’s architect’s project. Our first conversation addresses first-fix routes and future room use, then the structural, roof, stair, specialist and finishing work is set out in a written scope.
- Review the supplied drawings and the actual roof space
- Build the specified structure, roof and staircase
- Coordinate specialists, finish the room and check handover

Site measurements before ordering
Construction to supplied design
Qualified trade interfaces recorded
A visible finish and handover review
Agree the construction package before work begins
Before pricing a Finchley loft, we ask what the room will contain and which services the architect has drawn. A study with modest power demand and a proposed wet room are different construction briefs. Our quotation separates the engineered floor, roof alteration, stair, electrical and plumbing stages from optional fitted storage. The client provides the design; we identify what can be built from the issued detail and what needs a specialist answer first.

Measure the house that will carry the new room
The existing loft is walked with service routes in mind. We note accessible electrical cables, heating pipes, water tanks and ventilation equipment, then measure roof space and the route to the landing. These observations are compared with the proposed structure. Concealed routes are not assumed to be movable. If a designed support crosses an existing service, the qualified installer and engineer must resolve the interface before the construction sequence is fixed.
Construction sequence for Finchley
| Stage | Our operation | Decision before next stage |
|---|---|---|
| Design review | Compare the supplied project with the first-fix routes and future room use decision | Record missing details and named responsibilities |
| Site setup | Protect the access route and plan component handling | Confirm the actual address and working route |
| Floor and roof | Build the engineered floor and approved roof alteration | Complete relevant exposed-work checks |
| Specialist first fix | Coordinate qualified electrical and plumbing work | Verify routes before enclosure |
| Interior and handover | Fit linings, flooring, joinery and decoration | Review visible work and outstanding records |
Use the supplied plans and assign the decisions
The room layout and service schedule come from the client-appointed architect; structural member sizes and permissible openings come from the engineer. We bring the electrician and plumber’s route questions into that review before a floor is framed. The written build scope records whose drawing takes precedence when a fitting, pipe or cable appears to occupy the same space as a designed support. We do not prepare architectural plans or assume a service may be moved without specialist instruction.
Project information and responsibilities
| Requirement | Builder action | Design or specialist input |
|---|---|---|
| Architectural project | Execute the agreed construction | Client appoints architect and supplies plans |
| Structural design | Build specified supports and roof changes | Engineer issues and reviews structural detail |
| Planning and control | Make stages available for required checks | Consent and inspection route assigned in writing |
| Electrical and plumbing | Coordinate programme and access | Qualified trades install, test and record |
| Final finish | Complete agreed flooring, joinery and decoration | Client confirms selected products and finish schedule |

Protect the property and establish the work route
We agree which existing supplies need temporary isolation and when the occupants will be affected. The electrician or plumber handles their part; the building team protects the route, prepares material storage and keeps the working area clear. Before stripping or cutting, we identify the old service positions that can be seen and mark further investigation. An interruption is scheduled, not discovered after a floor member has been removed.
Build the designed floor and roof alteration
The engineer’s floor supports and roof framing are set out in the actual loft. We check the positions of existing services against the new members before fixing routes through them. A cable or pipe is not taken through a beam on convenience alone. Where the issued detail does not resolve a clash, we leave that section accessible and refer the question to the responsible designer and trade. Structural checks occur before boards conceal the result.
Fit the stair into both levels of the house
We check the proposed stair where it meets the existing landing, not solely in plan view. The lower arrival, upper opening, doors and circulation all need to work once wall linings and finished floor levels are in place. We compare measured conditions with the architect’s detail before ordering. The fitted stair, guarding and adjacent finishes are reviewed together, and any deviation that affects the approved design is raised before it becomes concealed joinery. The landing and stair are measured alongside the planned lighting and heating layout. We check where controls will be reached and whether the new opening leaves existing circulation usable.
Sequence qualified first-fix and final connections
The first-fix meeting uses the room layout, stair arrival and insulation build-up. Qualified specialists mark lighting, sockets, heating and ventilation and confirm how their routes avoid the designed members. If a bathroom is included, its plumbing and extract receive their own sequence; we do not imply every Finchley loft has one. After installation and the assigned checks, the team can close linings. Second fix and tests come after surfaces are ready.

Close the structure and finish the new room
The lining plan respects the space reserved for services and insulation. We board and plaster only when routes and inspections are complete, then prepare surfaces for decoration. Fitted storage is measured against the finished wall and roof slope so that access to controls or equipment is retained. Flooring and thresholds meet the designed stair level. The final finish is reviewed together with the trade access points, not as a decorative layer hiding them.
Where separate trades meet
| Interface | Construction action | Recorded check |
|---|---|---|
| Floor to stair | Form the designed opening and fit the stair | Alignment, finished level and guarding |
| Roof to new room | Weather the opening, then fit insulation and lining | External junction and concealed-stage review |
| Services to walls | Set first fix before boarding | Qualified trade installation and tests |
| Existing to new finishes | Resolve thresholds, trims and plaster edges | Clean transitions and item operation |
Check the completed construction and finishes
Completion is checked in layers. We revisit the external roof junctions and weathering that remain visible, then the stair, floor, services and finished surfaces. We test doors, ironmongery and accessible fittings and record any items to correct. The client receives the agreed trade information and a clear list of any remaining actions. We do not mark the project finished merely because the last coat of paint has dried. We test accessible fittings with the relevant trades, review finishes and confirm that the agreed service records are provided. Any unexplained outlet or inaccessible control is put on the correction list.

What we establish for a Finchley address
For a Finchley property, the roof form, access and relevant authority are established at the actual address. We avoid claiming that a district name determines permission or technical suitability. The supplied design and site survey govern the work, including any question about existing services.
Questions about loft construction in Finchley
Which existing services are checked during a Finchley loft survey?
We measure accessible areas and compare visible conditions with current drawings. Concealed or uncertain construction is referred to the responsible designer or engineer. We note visible cables, pipes, tanks and ventilation.
Can a new floor member be drilled for a cable route?
We follow issued engineering details, check positions against the existing house and keep work exposed for required review. Conflicts return to the designer. A beam penetration requires an engineer-approved detail.
Who plans lighting and heating positions for the new room?
The client-appointed architect establishes the design and consent route. We build from issued information and refer site discrepancies back before changing affected work. The architect’s layout and qualified trades define locations.
How are service interruptions arranged in an occupied home?
The actual entrance, landing and rooms determine protection, deliveries and waste handling. We agree the route before structural or roof work begins. Affected supplies are identified and the interruption agreed.
When is the stair landing checked against controls and sockets?
We check the opening and stair against finished levels, doors, headroom and both landings before ordering or fitting. Controls must be reachable after the stair is fitted.
What must be completed before roof linings are fitted?
Qualified trades set routes before enclosure. Installation, tests and records are assigned in writing and coordinated with structure and insulation. First fix and assigned checks precede enclosure.
Do you include ventilation for every loft room?
Qualified trades set routes before enclosure. Installation, tests and records are assigned in writing and coordinated with structure and insulation. Ventilation is specified for the actual room, not assumed.
Which specialist records are reviewed at handover?
We inspect the route and room, test fitted items and list adjustments. Specialist records and completion steps remain assigned to the responsible parties. Installers supply records for the work in their scope.