Architect plans · Build · Finish
Loft Conversion in Hampstead
We build full loft conversions in Hampstead from the client’s architect’s project. Our first conversation addresses design review for a potentially protected setting, 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
For a Hampstead roof project, the exterior form must be understood before the internal room is priced. The client’s architect provides the design and checks the property-specific planning position; our quotation describes the build from those documents. We distinguish retained roof fabric, the proposed alteration, engineered support and interior finish. A conservation designation, if one applies to the actual address, affects design decisions; it does not turn every home in the district into the same technical problem.

Measure the house that will carry the new room
We record visible roof shape, prior openings, coverings and any feature the architect has marked for retention. Inside, the loft’s accessible height, floor arrangement and stair connection are measured. We compare the proposed elevations with what can actually be seen from the property. If the drawings rely on a hidden structural condition, that uncertainty is stated for the engineer to assess. The visit is a measured build review, not an architectural heritage survey.
Construction sequence for Hampstead
| Stage | Our operation | Decision before next stage |
|---|---|---|
| Design review | Compare the supplied project with the design review for a potentially protected setting 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
A build cannot safely rely on a sales sketch. We ask for the architect’s current plans, engineering details and any consent or building-control information relevant to the proposed work. Our role is to execute the agreed construction, bring drawing conflicts to the designer and make required stages available for inspection. The client’s architect and other appointed professionals retain the design responsibilities recorded for the project. Nothing is described as automatically permitted across an entire neighbourhood. Camden publishes conservation-area guidance, but not every Hampstead address is treated alike. The client-appointed architect checks the property designation and proposed roof design; we request the approved information before structural or roof work begins.
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
Materials and temporary cover are planned for the roof detail approved for the property. We protect the access through existing rooms and check where components can be received without assuming external space is available. Existing features shown for retention are marked before stripping begins. The team opens only the section that can be secured in the planned stage. If a detail is missing, protection remains while the designer answers rather than improvising a visible exterior change.
Build the designed floor and roof alteration
We install the specified floor supports and roof framing, comparing the new line with the architect’s elevations. Junctions with retained rafters or covering are checked before the next layer conceals them. A change to window position, dormer outline or roof level is sent back to the designer because it may affect more than appearance. Weathering and insulation follow the approved build-up, and required exposed-work checks are completed before boards close the roof plane.
Fit the stair into both levels of the house
A stair arrival that looks plausible in an attic sketch is checked against the approved roof section and the finished insulation and floor levels. We measure the lower landing, nearby doors and upper route, then compare the result with the architect’s design. If the exterior form or stair position needs to change to gain clearance, the client-appointed designer makes that decision. We build the designed opening and fit the stair only after those dimensions agree.
Sequence qualified first-fix and final connections
Lighting, heating and ventilation are planned within the geometry approved for the roof. Qualified trades review whether an outlet or route affects the exterior design or a structural member. We coordinate first fix before lining; a late vent through a finished roof surface is avoided. The exact installation is set by the client’s project, with specialist tests and records assigned in the written scope.

Close the structure and finish the new room
Once structure, weathering and first fix have passed their agreed checkpoints, we fit the specified insulation and linings around eaves and openings. Plaster junctions, joinery and flooring are measured from the built shape, not the assumed volume on an early sketch. The landing below the stair is repaired and finished where the project affects it. Decoration is checked in the actual light to reveal uneven transitions rather than merely cover 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
Before handover, we compare the result with the agreed drawings and finish schedule. Visible structure interfaces, roof openings, the route from the landing, fitted items and decorated surfaces are reviewed together. The specialists provide the records in their scope, and any building-control completion step remains with the party assigned in writing. We close defects and leave the protected route through the house in the agreed condition. The review includes visible external junctions, stair and guarding, fitted details and the condition of rooms used for access. We identify any specialist or building-control record still due.

What we establish for a Hampstead address
A Hampstead project may require additional design and consent consideration if the property is in a conservation area or has another protection. That is checked by address and proposal, not assumed for the whole district. Our role is to execute the client’s approved architect and engineer information.
Questions about loft construction in Hampstead
How is a Hampstead roof proposal checked before construction?
The proposal separates our building work, selected products and the design information supplied by appointed professionals. Drawing changes are priced and sequenced before affected work continues. Issued roof elevations are compared with the real building.
Does every address in the area have the same conservation rules?
The client-appointed architect establishes the design and consent route. We build from issued information and refer site discrepancies back before changing affected work. Designation is checked for the precise property.
Who prepares the roof design and application material?
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 client-appointed architect prepares the proposal.
What is recorded about existing exterior features at survey?
We measure accessible areas and compare visible conditions with current drawings. Concealed or uncertain construction is referred to the responsible designer or engineer. Visible retained fabric and earlier alterations are noted.
When is weather protection planned for roof work?
The actual entrance, landing and rooms determine protection, deliveries and waste handling. We agree the route before structural or roof work begins. Temporary cover is planned before lifting roof material.
Can a new service outlet be placed anywhere in the roof?
Qualified trades set routes before enclosure. Installation, tests and records are assigned in writing and coordinated with structure and insulation. A new exterior outlet needs design review.
How do roof slopes affect joinery and plaster details?
Specified insulation and linings follow the required hold points. Plaster, flooring, joinery and decoration are sequenced to protect completed work. Joinery follows the finished slope and eaves geometry.
What is inspected on the exterior 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. Accessible roof connections and room finishes are both reviewed.