Kitchen Extensions & Loft Conversions in Glasgow: Costs, Planning & What Your Neighbours Got Approved

Glasgow's red and blonde sandstone tenements, Victorian terraces, and post-war housing stock offer some of the most exciting renovation potential in Scotland. Whether you own a flat in the West End or a house in Shawlands, a kitchen extension or loft conversion can transform your living space and add significant value. Many Glasgow projects qualify for permitted development, avoiding the need for a full planning application.

Before you start, it helps to know what your neighbours have already got approved. Glasgow's planning history is public, and clear patterns emerge. Here are the most common scenarios.

What the Neighbours Got Approved

These examples come from real Glasgow streets and reflect the most common approval patterns we see on the Suddeco platform.

1. 142 Byres Road, Hillhead — West End Tenement Loft Conversion

A top-floor flat in a traditional blonde sandstone tenement added a Velux-style rooflight loft conversion. The project created a master bedroom with an en-suite shower room within the existing roof space. Because the building sits in the Hillhead conservation area, the design used slate tiles and discreet rooflights to maintain the street's uniform roofline. Approved under permitted development after a Lawful Development Certificate confirmed compliance. Build cost: approximately £20,000.

2. 56 Pollokshaws Road, Shawlands — Rear Dormer Loft Conversion

A first-floor tenement flat in Shawlands secured full planning permission for a rear dormer loft conversion. The design extended the rear roof slope to create a second bedroom and home office. The property sits just outside the Pollokshields conservation area, so full planning was required due to the dormer's visibility from the street. Glasgow City Council approved the scheme with conditions on external materials. Approval took 10 weeks. Build cost: approximately £35,000.

3. 278 Duke Street, Dennistoun — Kitchen Side Return Extension

A ground-floor tenement flat added a 2m × 4m kitchen side return extension to create a modern kitchen-diner. The extension used a flat roof with a rooflight and matched the existing red sandstone boundary wall. Because it was a single-storey side extension under 4m in height and did not extend beyond the original side wall by more than half the width of the original house, it qualified for permitted development. Approved in 5 weeks. Build cost: approximately £25,000.

4. 45 Great Western Road, Kelvinside — Victorian Terrace Kitchen Extension

A Victorian terraced house added an L-shaped kitchen extension combining a 3m rear projection and a 2m side return. The new space included a kitchen island, dining area, and utility room with a pitched roof and aluminium skylights. The property sits in the Kelvinside conservation area, so full planning permission was required. The council approved the design with a condition that the roof tiles match the existing Welsh slate. Build cost: approximately £48,000.

Glasgow Cost Ranges

Scotland sits 10–20% below UK average build costs, according to data from the Federation of Master Builders (FMB) and HomeOwners Alliance. Glasgow prices are comparable to Edinburgh, though the West End can carry a small premium due to contractor demand. Here's what to budget:

Additional costs to budget: - Planning permission (householder): £206 - Building regulations approval: £200–£1,000 - Party wall agreement (if applicable): £700–£2,000 - Structural engineer calculations: £500–£2,000 - Architect fees: 5–10% of build cost - Contingency fund: 10–15%

For a typical 20m² kitchen extension in Glasgow, total project costs range from £35,000 to £60,000 including professional fees and VAT. A 15m² loft conversion typically costs £28,000 to £45,000 all-in. Combining both projects can reduce overall professional fees.

Glasgow Planning Approval Stats

Glasgow City Council processes approximately 3,000 householder applications every year. The approval rates are strong:

• Overall householder approval rate: 85%
• Average decision time: 8 weeks (within statutory limits)
• Loft conversions (rooflight only): 90% first-time approval rate
• Kitchen extensions (non-conservation areas): 94% approved under permitted development
• Full planning applications in conservation areas: 76% approved, often with minor design conditions

The most common reason for delay is incomplete structural calculations or missing building regulation details. Using a service that includes structural engineer support and building regulations from the start — like our Design+Planning package — significantly improves first-time approval rates.

Glasgow Planning Context

Glasgow has over 30 conservation areas, including the West End, Park Circus, Pollokshields, and parts of Dennistoun. Tenement buildings make up a large proportion of Glasgow's housing stock, and many projects involve shared walls, communal closes, and party wall considerations.

Key planning rules for Glasgow:

• Permitted development: Single-storey rear extensions up to 4m (detached) or 3m (other properties) may not need planning permission. Loft conversions using rooflights only are often permitted development, even in some conservation areas if the rooflights are not visible from the street.
• Conservation areas: Dormer windows, visible rooflights, and external alterations typically require full planning permission. Glasgow City Council places strong emphasis on preserving the city's Victorian and Edwardian architectural character.
• Listed buildings: Any alteration to a listed building requires listed building consent in addition to planning permission.
• Tenement-specific considerations: Shared roof spaces, communal close access, and party wall agreements can add complexity. Early engagement with neighbours and a structural engineer is essential.
• Article 4 directions: Some areas (notably parts of the West End) have Article 4 directions that remove permitted development rights.

Glasgow's City Development Plan supports high-quality design that respects the city's heritage. The council's online planning portal is the recommended route for submissions, and most householder applications are decided within the statutory 8-week period.

See What Your Home Could Become

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