Logo

Extensions, Loft Conversions & All Brickwork

Protect and enhance your property with On The House’s expert building and renovation services across London and the surrounding counties.

Whether you’re planning a home extension, loft conversion, basement conversion with tanking, repointing tired brickwork, or refreshing external rendering, our fully qualified team delivers high-quality, reliable work using premium materials and compliant building methods.

Our Services Include
We manage everything from initial design consultation and planning permissions (where needed) through to full construction, waterproofing, finishing and certification. All structural work complies with current Building Regulations, and our installations come with long-term guarantees for your peace of mind.
  • Property extensions: single-storey, double-storey, rear and side returns
  • Loft conversions: dormer, hip-to-gable, mansard and roof light conversions
  • Basement tanking & conversions: Type A & Type C waterproofing systems with habitable space creation
  • Brickwork pointing & repointing: lime mortar, cement-based and tuck pointing for period and modern properties
  • External rendering: monocouche, silicone, acrylic, pebbledash repair and traditional sand & cement renders
Property Extensions, Loft Conversions, Basement Tanking, Brickwork Pointing & External Rendering Services
What Are These Building & Renovation Services?
These services involve structural alterations, extensions and external improvements to increase space, value and weatherproofing. Common drivers include growing families, creating extra living areas, restoring original features or preventing water damage through proper pointing and rendering.
  • Increased Living Space: Add valuable square footage with extensions or lofts.
  • Property Value Boost: Well-executed conversions and extensions significantly enhance market value.
  • Aesthetic & Weather Protection: Fresh pointing and rendering improve appearance and protect against the elements.
Property Extensions, Loft Conversions, Basement Tanking, Brickwork Pointing & External Rendering Services
Why Address Property Extensions, Loft Conversions, Basement Tanking, Brickwork Pointing & External Rendering?
Investing in these works is key for homeowners looking to maximise space, improve energy efficiency or maintain structural integrity. Poorly done alterations or neglected external masonry can lead to damp, cracks and costly future repairs.
  • Long-Term Savings: Quality work prevents issues like water ingress or structural movement.
  • Enhanced Comfort & Functionality: Transform underused spaces into modern, usable areas.
  • Regulatory Compliance: All projects meet UK Building Regulations and planning requirements.
  • Assured Quality: Professional execution with guarantees for lasting results.
Common Issues We Resolve
From outdated exteriors to cramped living arrangements, our team tackles a variety of challenges to upgrade and protect your property.
  • Cramped or outdated homes: solved with thoughtful extensions and loft conversions.
  • Damp or leaking basements: addressed through expert tanking and drainage systems.
  • Cracked or porous brickwork: restored with precise repointing to stop water penetration.
  • Peeling or failed external render: replaced or repaired for improved insulation and appearance.
Why On The House?
Choose On The House for professional, reliable building and renovation services across London and surrounding counties.
  • Expert Craftsmen: Fully trained specialists with proven experience in extensions, conversions and masonry.
  • Tailored Solutions: Custom plans designed around your property, budget and needs.
  • Prompt & Organised Service: Efficient project management with minimal disruption.
  • Guaranteed Workmanship: All projects comply with UK standards and include robust guarantees.
Get Started Today

Unlock your property’s full potential with our expert surveys, designs and installation services for extensions, loft conversions, basement tanking, brickwork pointing and external rendering.

Contact On The House today to schedule a consultation or request a quote for your project in London and surrounding areas.

Enhance your home with our trusted, professional solutions.

FAQ

01.

Growing families, remote working needs or desire for extra space often prompt these popular home improvements.
02.

Yes, we can manage the full process, including applications where required, to ensure compliance.
03.

We offer Type A (barrier) and Type C (cavity drain) systems, plus sump pumps, tailored to your property.
04.

Timelines vary by property size, but we provide clear schedules with minimal disruption.

Connect with us

We are building a community of property owners, sharing tips and advice to help you maintain your property. Join the conversation...

Logo
Fire Risk AssessmentLeak DetectionSash WindowsAutomatic Opening Vents (AOVs)Damp and MouldWaterproofing and TankingExtensions, Loft Conversions & All BrickworkElectrical Installation Condition Reports (EICRs)
LoginAbout usOur StoryHow We WorkBlogContactPrivacy
Trustmark
ICO
Napfis
Safe Contractor Approved
NAPIT
Federation of Master of Builders

Copyright © 2026 - All rights reserved. On The House is a trading style of On The House Limited.