Builder in Southall, UB1 and UB2 — Extensions, Loft Conversions, and Full Renovations
Jaspal Constructions Limited delivers building and renovation projects in Southall from our base at 170 Kings Avenue, Greenford, UB6 9DF — less than 2 miles from Southall town centre. Since 2011, across over 2,000 completed West London projects, we have delivered house extensions, loft conversions, full house renovations, kitchen and bathroom refurbishments, garage conversions, electrical rewires, boiler installations, roofing, plastering, flooring, painting, carpentry, and new builds throughout UB1 and UB2.
The average house price in Southall sits at approximately £422,000 to £486,000 in 2026 (Rightmove Southall 2026, GetAgent 2026). Recent transactions include 44 Randolph Road UB1 1BN at £500,000 (December 2025) and 71 Florence Road UB2 5HX at £490,000 (April 2026) (HousemetricUK 2026). The Elizabeth line stop at Southall station has improved connectivity significantly, strengthening buyer demand and making renovation investment in UB1 and UB2 more compelling than at any point in the past decade.
Public liability insured · NICEIC-certified · Gas Safe registered · JCT contracts on every project.
Local Knowledge
The Southall Housing Stock — Victorian Terraces, 1930s Semis, and Post-War Housing
Southall's housing stock spans three distinct building periods. Victorian terraces built closest to the Broadway and railway station along Lady Margaret Road, South Road, and the surrounding streets are the oldest stock: solid-wall pre-1919 construction requiring lime-compatible plaster internally and breathable render externally. Applying modern gypsum or sand-and-cement products to these solid walls traps moisture and causes damp-related damage within a few years — we specify the correct system at survey.
The interwar 1930s development that expanded Southall westward and northward produced the cavity-wall semidetached houses that line streets such as Randolph Road, Clifton Road, Dormers Wells Lane, and Norwood Road. These properties — dominant in UB2 — are ideally suited to rear extensions and loft conversions. Post-war terraced housing across Southall Green and parts of UB2 forms a third tier, with different structural characteristics requiring individual assessment.
The UB3 1 sector adjacent to Southall grew 4.2 percent in the last year (HousemetricUK 2026). The Elizabeth line has reinforced buyer demand across both UB1 and UB2, supporting active renovation investment from owner-occupiers improving long-term homes and investors improving rental stock.
3 Periods
Victorian, 1930s & post-war housing stock
£422k–£486k
Average Southall property value, 2026
Our Work
Recent Projects in Southall, UB1 & UB2
A selection of extensions, loft conversions, and renovations completed for homeowners across UB1 and UB2 — built on time, on budget, and to a fixed-price quote.
Services
Building Services in Southall — What We Deliver in UB1 and UB2
House Extensions in Southall
We build rear extensions, side extensions, and kitchen extensions on Southall properties throughout UB1 and UB2. A single-storey rear extension in Southall costs approximately £35,000 to £70,000 in 2026. Most UB2 1930s semis qualify for a rear extension up to 3 metres under Permitted Development, extendable to 6 metres under the Neighbour Consultation Scheme. We manage the Lawful Development Certificate with the London Borough of Ealing and all Building Regulations.
Loft Conversions in Southall
We convert roof spaces in Southall homes into additional bedrooms, home offices, and bathrooms. Velux loft conversions in Southall: £25,000 to £45,000. Dormer loft conversions: £45,000 to £75,000. Many Southall Victorian terraces have a usable roof space for a Velux conversion within Permitted Development limits — we measure the existing head height and roof structure at the free survey before confirming viability.
Full House Renovation in Southall
Complete renovation programmes for UB1 and UB2 properties: structural alterations, first fix trades, plastering, kitchens, bathrooms, flooring, and decoration. Full 3-bedroom semi renovation in Southall: £60,000 to £140,000. JCT contract on every project. We advise on lime plaster specification for Victorian UB1 properties at the survey stage.
Kitchen Renovation in Southall
Kitchen refits and open plan kitchen renovations throughout Southall. London mid-range kitchen refit: £10,000 to £20,000. Full structural kitchen renovation with wall removal: £40,000 to £100,000+. We engage a structural engineer and manage Building Regulations for all wall removals.
Bathroom Renovation in Southall
Family bathrooms, en-suites, wet rooms, and cloakrooms across UB1 and UB2. London mid-range bathroom renovation: £8,000 to £15,000. All bathroom electrical work Part P certified by NICEIC electricians. Tanking to BS 8000-0 on all shower areas and wet rooms.
Electrical Services in Southall
NICEIC-certified EICR inspections, full rewires (3-bed London cost £4,500 to £9,000), consumer unit upgrades (£450 to £950), and EV charger installation (£800 to £1,500) throughout UB1 and UB2. Older Southall Victorian terraces frequently retain post-war consumer units without RCD protection — we identify this at EICR and advise on the correct remedial action.
Plumbing and Heating in Southall
Gas Safe registered boiler installation, central heating, and bathroom plumbing in Southall. Combi boiler supply and installation: £3,200 to £5,500. Benchmark Commissioning Checklist completed on every boiler installation. Gas safety certificate issued at completion.
Plastering and Rendering in Southall
Internal plastering and external rendering across UB1 and UB2. For Victorian solid-wall UB1 properties, we specify lime-compatible plaster or appropriate lightweight gypsum — not modern dense coats that trap moisture. External render on Victorian properties uses breathable monocouche or silicone systems, not sand and cement.
Roofing in Southall
Flat roof replacement on Southall extensions (EPDM £40–£70/m2, GRP £50–£80/m2), pitched roof tile repair and replacement, ridge re-bedding, lead flashing at chimney stacks, and guttering replacement throughout UB1 and UB2.
All Other Services in Southall
We also deliver in Southall: garage conversions, basement conversions, flooring, painting and decorating, carpentry and joinery, and new build construction.
Planning
Planning in Southall — London Borough of Ealing
Southall UB1 and UB2 fall entirely within the London Borough of Ealing for all planning purposes. Ealing Council targets 8 weeks for standard householder applications. Standard householder planning fee: £528 from April 2025. Dormers Wells area has a Conservation Area designation — we check your specific address at the free survey and confirm whether any works would require consent beyond Permitted Development. We manage all Ealing planning applications on behalf of our Southall clients.
Key Facts
- Standard householder applications
- 8 weeks
- Householder planning fee (from Apr 2025)
- £528
- Dormers Wells area
- Conservation Area
Why Us
Why Southall Homeowners Choose Jaspal Constructions
Less than 2 miles from Southall means our site managers are familiar with UB1 and UB2 streets, know the local parking restrictions, and can respond quickly to any on-site issue. We understand the Victorian and 1930s construction characteristics of Southall's housing stock and specify the correct materials for each property type.
Credentials:
NICEIC Certified Electricians
Gas Safe Registered Engineers
Public Liability Insurance
JCT Domestic Building Contracts
5-Year Guarantee
What Our Southall Clients Say
We are actively building our Google review profile from UB1 and UB2 clients. If you are a previous Southall client, we would be grateful for an honest review of your experience.
FAQ
Frequently Asked Questions — Building in Southall
Does my Victorian Southall terrace need lime plaster?
On pre-1919 solid-wall properties — common in UB1 around the Broadway and Lady Margaret Road — lime-compatible plaster is strongly recommended. Modern gypsum applied directly over old lime base coats, or sand and cement render on a solid brick facade, traps moisture and causes damp damage within a few years. We assess the wall construction and specify the correct system at the free survey.
Can I build a rear extension on my Southall 1930s semi without planning permission?
Most Southall 1930s semidetached houses in UB2 can accommodate a single-storey rear extension up to 3 metres under Permitted Development, extendable to 6 metres under the Neighbour Consultation Scheme. A Lawful Development Certificate from Ealing Council confirms this in writing. We advise on the specific PD position for your address at the free survey.
How much does a loft conversion cost in Southall in 2026?
A Velux loft conversion in Southall costs £25,000 to £45,000. A dormer loft conversion costs £45,000 to £75,000. We provide a fixed-price written quote after surveying the specific roof structure at your property.
Do you work on both UB1 and UB2 streets?
Yes. We carry out projects throughout UB1 (Southall Broadway, Lady Margaret Road, Norwood Road) and UB2 (Southall Green, Norwood Green, Dormers Wells) and all surrounding residential streets.
Which planning authority covers Southall?
The London Borough of Ealing covers the whole of Southall UB1 and UB2. All planning applications are submitted to Ealing Council.
How quickly can you visit Southall for a free survey?
Less than 2 miles from our Greenford base — we typically arrange free surveys in Southall within 5 working days of your call.
Book Your Free Survey in Southall
We are based nearby in Greenford. We can visit your property, assess the project, confirm the planning position, and provide a detailed fixed-price written quote — usually within 5 working days of your call.
Get in Touch
Jaspal Constructions Limited
Sat: 8:00am – 1:00pm