Construction services in London

Full-service building, from family homes to HMOs.

Extensions, lofts, full refurbishments, roofing, and compliant HMO & commercial conversions — delivered on time, on budget, and to regulation.

What we do

2A Construction delivers complete building solutions – from structural extensions and loft conversions to full internal refurbishments and roofing.

House Extensions

House Extensions

Single and double-storey extensions, open-plan living, and structural steel installation.

  • Planning & design collaboration
  • RSJs, foundations and structural works
  • Building Control inspections & sign-off
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Loft Conversions

Loft Conversions

Dormer, hip-to-gable, mansard, and Velux conversions to add bedrooms and value.

  • Staircase design & layout optimisation
  • Insulation and fire regulation compliance
  • En-suite bathrooms and roof lights
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Full Refurbishments

Full Refurbishments

Complete strip-out and rebuild of houses and flats, including kitchens, bathrooms and reconfiguration.

  • Internal reconfiguration & stud walls
  • Plastering, tiling, flooring & finishes
  • Electrical & plumbing upgrades
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Roofing & Envelope

Roofing & Envelope

New roofs, re-roofs and repairs in tile, slate, GRP, and EPDM flat roofing systems.

  • New pitched & flat roofs
  • Leadwork, gutters & fascia
  • Repairs after leaks or storm damage
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Painting & Decorating

Painting & Decorating

Internal and external decorating with clean preparation and durable finishes.

  • Full prep & repair of surfaces
  • High-quality paints & finishes
  • Feature walls & woodwork
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Flooring & Tiling

Flooring & Tiling

Laminate, engineered wood, LVT, tiles and more – fitted to tight lines and levels.

  • Subfloor prep & levelling
  • Ceramic, porcelain & stone tiling
  • Skirtings & finishing trims
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Recent work snapshots

Kitchen extension
Loft conversion
Full refurbishment
New roof
Painting and decorating
Flooring and tiling

Complete Domestic Building Services

We cover every aspect of domestic construction — from structural works and first fix, to premium finishing and compliance. Our team delivers professional-grade workmanship, reliable scheduling, and clear communication throughout the entire build journey.

Core Trades & Structure

  • • Demolition & strip-out
  • • Blockwork, brickwork & foundations
  • • Stud walls, partitions & reconfiguration
  • • Insulation & soundproofing (Part E)
  • • First-fix carpentry & joinery
  • • Windows, doors, skylights & roof lights

MEP & Compliance

  • • Electrical rewires & upgrades (Part P)
  • • Consumer units & full certification
  • • Plumbing & heating systems
  • • Bathrooms, wet rooms & sanitaryware
  • • Ventilation systems (Part F)
  • • Fire & safety systems: smoke / heat / CO

Finishing & Lifestyle

  • • Kitchens supplied & fitted
  • • Tiling for walls & floors
  • • Flooring: LVT, laminate, engineered wood
  • • Skirting, architraves & internal doors
  • • Painting & decorating
  • • Patios, paving, steps & outdoor works

HMO Development & Compliance

We specialise in complete HMO conversions, delivering properties that meet all legal, safety and licensing requirements. Our team manages the entire lifecycle — from design, planning and fire strategy, to construction and final certification. Every detail is handled with precision to ensure investment-grade, compliant results.

Full HMO Compliance Package

  • • Full HMO architectural design
  • • Planning applications & LDC submissions
  • • Fire door sets (FD30) & compartmentation
  • • AOV systems, signage & escape strategy
  • • Fire alarm systems (Grade A / LD2 / LD3)
  • • Emergency lighting installation
  • • Part B (fire), Part M (access), Part P (electrics)
  • • Structural reconfiguration & load-bearing works
  • • Kitchen, bathroom & full interior renovation
  • • Soundproofing (Part E)
  • • Full Building Control management
  • • Final Fire Risk Assessment
  • • HMO Licence application support
Professional HMO conversion

Ideal For

  • • Landlords growing their portfolio
  • • Property investors & sourcing agents
  • • Estate & letting agents
  • • Developers targeting multi-let markets
  • • Conversions from family home → HMO
  • • Investors following BRRR & high-yield models
Considering an HMO conversion?
We handle planning, fire design, construction and compliance under one contractor.

Thinking of converting your property into an HMO?

We provide full planning, design, compliance and construction management — ensuring your property is fully licensable, safe, and ready for high-yield tenancy.

Book a Free HMO Consultation

Commercial Change-of-Use

Whether you’re converting a home into a clinic, turning retail into residential, or creating a mixed-use property, we handle the entire regulatory and construction pathway. Our team ensures your project meets planning requirements, Building Regulations, fire safety standards, access rules and commercial performance expectations — from early drawings to final sign-off.

What We Manage

  • • Full planning permission for change-of-use (C3 → C1, C3 → Sui Generis, etc.)
  • • All architectural, structural & compliance drawings
  • • Traffic, noise & environmental assessments
  • • Full fire strategy & compartmentation planning
  • • Building Control management & submission
  • • Complete commercial fit-out & refurbishment
  • • Electrical, plumbing & MEP upgrades (certified)
  • • Mechanical ventilation, HVAC & extraction systems
  • • Accessibility compliance (DDA)
Commercial change-of-use

Examples of Change-of-Use Projects

  • • House converted into office or medical clinic
  • • Flat converted into a compliant commercial unit
  • • Retail unit converted into residential flats
  • • Family home → Licensed HMO (C3 → Sui Generis)
  • • Loft converted into new rentable accommodation

Why Choose 2A Construction

Whether it’s a loft conversion, extension, renovation, HMO or commercial change-of-use project — our process, compliance expertise and craftsmanship ensure your project is delivered to the highest standard.

Measured & organised

Clear scope, detailed surveys, itemised quotations and structured project management — so you always know the timeline, cost and next steps.

Design to delivery

We coordinate architects, engineers and Building Control — ensuring drawings, compliance strategy and on-site work stay perfectly aligned.

Craftsmanship & compliance

Skilled trades, compliant installations and premium finishing — delivered to meet lender, investor and local authority requirements every time.

Our Construction Process

Whether it’s an extension, loft, refurbishment, HMO, structural work or a commercial change-of-use, our process ensures clarity, safety, compliance and premium workmanship from day one to completion.

01
Site Visit & Consultation
We inspect your property, take measurements, assess structural and regulatory needs, and understand your design goals.
02
Planning, Design & Approvals
Architectural drawings, structural calculations, Building Control strategy and planning routes handled and coordinated for you.
03
Construction & Project Management
Skilled trades deliver the work with supervision, compliance checks, staged inspections and weekly project updates.
04
Final Handover & Certification
Snags completed, warranties issued and full compliance pack provided — ready for insurers, lenders or future valuations.

Frequently Asked Questions

Here are the most common questions about our construction, renovation, extension and HMO/commercial services.

How soon can you start?

Extensions, lofts and refurbishments usually begin within 2–6 weeks depending on scope. Compliance and drawings can start immediately.

Do you handle planning and Building Control?

Yes. We manage architectural drawings, structural engineering, planning applications and Building Control submissions for all project types.

Are you insured and compliant?

Yes. We carry Public Liability, Employers Liability and Professional Indemnity, and work with certified electricians, gas engineers and fire specialists.

Can I see previous work?

Of course. Browse our portfolio or request case studies and references from similar projects.

View portfolio

Planning a construction project?

Whether you're upgrading your home, converting your loft, extending your property, renovating internally, or delivering a full HMO/commercial conversion — we provide design, compliance and construction services under one roof.

Construction project