25 years
Construction experience
Family-run
A personal approach
£2m
Liability cover
One team
In-house & specialist trades
About this service
Start with what your house needs to do
A successful extension begins with a clear reason for building. You may need a kitchen that works for everyday family life, a better connection to the garden or space that allows rooms elsewhere in the house to be used differently. The important question is how the additional space will connect to the rooms, circulation and services you already have.
CG Joinery & Building (Aberfeldy) Ltd is a family-run business led by owner Callum Gilbert, who has 25 years of construction experience. Our residential work draws on an in-house team and specialist subcontractors. Plumbing and electrical work is carried out through specialist trades, with their requirements considered alongside the building work rather than left until the layout is already fixed.
For an extension in Aberfeldy or elsewhere in Perthshire, we can assist with plans and Scottish building warrant applications and have established architect contacts. A site visit and detailed no-obligation quotation help define the proposed work. The quotation needs to reflect the design information available, the relationship with the existing house and any items that still require investigation.
Who it’s for
- Homeowners who need additional living space without overlooking the existing layout.
- Families considering a larger kitchen, dining area or different ground-floor arrangement.
- Owners with extension drawings who want to discuss buildability and the construction scope.
Why it matters
Resolve the awkward junctions before building
The difficult part of an extension is often where new construction meets the old house. Structure, weather protection, drainage and everyday access all need attention before finishes are selected.
New space with a poor connection
A large room can still be awkward if it creates a narrow route through the house or leaves another room without a useful purpose. Consider furniture, doors and movement between spaces together. Think about daylight in the existing rooms as well as the amount of glazing proposed for the extension.
An opening without a settled structural design
Removing part of an external wall changes the way loads are supported. The opening, supporting structure and foundations need an appropriate design, not an assumption based on appearance. Establish what professional input is required and allow for the effect of structural work on adjacent floors, walls and finishes.
External work overlooked in the budget
Drainage changes, ground levels and reinstatement can be easy to miss when attention is focused on the new room. Discuss the surrounding work needed to connect the extension properly. Access routes, steps and surfaces should be included or excluded clearly so the finished scope is understood.
Common mistakes to avoid
- Choosing the footprint before checking how the existing rooms will work.
- Assuming planning permission and a Scottish building warrant are the same approval.
- Leaving sockets, lighting and plumbing decisions until internal finishes are underway.
- Comparing prices without checking glazing, finishes, drainage and reinstatement allowances.
Our process
How we deliver
your extensions project.
Describe the space you need
Explain how you use the house now and what is not working. Share any drawings and describe the rooms or activities the extension should accommodate. A practical brief helps distinguish essential changes from optional features and gives the design discussion a useful starting point.
Review the house and site
At the site visit, discuss access, the proposed connection, visible construction and the outside space affected. Some conditions may remain unknown until suitable investigation takes place. Identify those uncertainties early so they can be addressed through design, inspection or clearly stated quotation assumptions.
Develop the scope and approvals
We can assist with plans and Scottish building warrant applications, drawing on established architect contacts where appropriate. Confirm which permissions and design inputs are needed. The detailed no-obligation quotation should identify the proposed construction, specification and exclusions rather than relying on a broad description of an extension.
Build in a coordinated sequence
Groundworks, the new structure, weather protection and the connection into the existing house need a planned relationship. Specialist plumbing and electrical work must fit that sequence. Discuss occupation and temporary separation before disruptive stages, and agree changes before they alter work already in progress.
Review the finished extension
At handover, review the agreed work, outstanding items and relevant care information. Confirm the arrangements for any required completion documentation. Builds have six-month and one-year defects liability periods on terms confirmed per project, so the reporting route and applicable scope should be understood before the job is closed out.
What you gain
The benefits of doing it properly.
Space shaped around daily use
A well-considered brief links the extension to cooking, eating, storage or family routines. It helps avoid spending the budget on floor area that looks generous on a drawing but does not solve the original problem.
A considered old-to-new connection
Attention to levels, openings and circulation makes the extension part of the house rather than an isolated addition. Those relationships should be resolved alongside structural requirements, not left to the final stages of construction.
Services planned with the layout
Heating, plumbing, lighting and socket positions influence how a room can be furnished and used. Involving the relevant specialist trades at the right stage gives these requirements a place in the construction plan.
A clearer specification
Agreeing the roof, glazing, internal finishes and external work makes the quotation more informative. It also gives you a practical basis for deciding where to prioritise expenditure without confusing a changed specification with the original price.
An occupation plan discussed early
Understanding which rooms or facilities may be affected allows you to think realistically about remaining at home. The right arrangement depends on the work, the household and how safely the site can be separated.
Maintenance considered from the start
Access to gutters, drainage points and service components should form part of the design discussion. A room that is straightforward to look after is more useful than one whose essential maintenance has been overlooked.
In detail
Practical decisions for a Perthshire extension
Extension proposals need to suit the particular house and plot. A solution that works on one property may not suit another with different access, existing construction, orientation or ground conditions.
Approvals and the information needed to build
In Scotland, planning requirements and building warrant requirements are separate questions. Check the position for your proposal rather than assuming that a modest extension needs no formal consideration. Site constraints or the status of the property may affect the advice required. We assist with plans and Scottish building warrant applications, but the relevant design responsibilities and submission arrangements should be agreed for the project.
Detailed information is also needed for the connection to the existing building. Roof junctions, floor levels, structural support and insulation continuity all deserve attention. Where engineering input is needed, the construction scope should follow the agreed design. A site assumption is not a substitute for information that affects the stability or weather resistance of the house.
Groundworks, drainage and getting materials in
The proposed footprint needs to be considered alongside existing drains, levels and access. Visible conditions can inform an early discussion, but hidden ground or drainage conditions may require further investigation. Agree how unknown items will be handled commercially and practically. Avoid treating an unverified assumption about foundations as a settled fact simply to produce a neat headline quotation.
Delivery and storage space can influence how an extension is built, particularly where access passes close to the occupied house. Discuss what can reach the working area and what external surfaces may be disturbed. Reinstatement, garden access and any boundaries affected should be described in the scope so the end point of the building work is clear.
Comfort, glazing and finishing choices
More glazing does not automatically mean a more comfortable room. The design needs to consider heat loss, solar gain, ventilation and the use of the space throughout the year. Furniture positions and privacy also matter. These questions are best considered together rather than choosing doors and windows solely from a photograph of another property.
Internal finishes need coordination with the construction beneath them. Floor build-ups affect levels; kitchen layouts affect service positions; and lighting choices affect first-fix work. Where homeowners supply fittings, agree the required information and delivery responsibilities. This helps avoid reaching a stage where a missing specification prevents the next trade from completing its part of the extension.




Next step
Request a Quote for your extension
Call CG Joinery & Building (Aberfeldy) Ltd on 07584 048096, Monday to Saturday, 6am–8pm. Share your plans and the problems you want the extension to solve, and discuss a site visit and detailed no-obligation quotation.
£2m public & employers’ liability · 6 & 12-month defects liability on builds · Mon–Sat 6am–8pm

