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Yorkshire's Leading Retrofit Specialists

From £2.5M+ contractor programmes to single-property upgrades, we deliver retrofit projects that get approved first time, every time.

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4.6

4.6

4.6

89+ Reviews

89+ Reviews

89+ Reviews

1100+ properties upgraded

£4M+ projects delivered

PAS2030/2035 certified

£2.5M+ projects delivered

1100+ properties upgraded

£4M+ projects delivered

PAS2030/2035 certified

£2.5M+ projects delivered

1100+ properties upgraded

£4M+ projects delivered

PAS2030/2035 certified

£2.5M+ projects delivered

1100+ properties upgraded

£4M+ projects delivered

PAS2030/2035 certified

£2.5M+ projects delivered

Accredited by the UK's Most Trusted Retrofit Schemes

  • Installation Assurance Authority Logo
  • TRUSTMARK Logo
  • CHAS Logo
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northern retrofit hull vector

How We Delivered £2.5M Social Housing Retrofit With Zero Compliance Issues for CLC Group

When CLC Group needed a reliable partner for their largest Yorkshire social housing retrofit programme, they chose Northern Retrofit. Our compliance-first approach delivered 89 properties on time, with zero payment delays and 94% resident satisfaction.

"We’re very pleased with the results and would gladly work with them again."

"We’re very pleased with the results and would gladly work with them again."

"Northern Retrofit Limited delivered an excellent retrofit service on our social housing project, completing cavity wall and loft insulation alongside a range of other energy efficiency measures to a high standard.

Their team worked efficiently, caused minimal disruption to residents, and maintained strong communication throughout. Compliance was handled exceptionally well, with all checks and documentation completed promptly and accurately."

Sue Matthews
Sue Matthews

Sue Matthews

Retrofit Compliance Manager at CLC

CLC Group Logo White

£2.5M

Project Value

89

Properties

Zero

Payment Delays

100%

Approval

Trusted by Industry Leaders Across the UK

Serving homeowners, landlords, contractors, councils and housing associations

  • CLC Group Logo
  • Cocuun Logo
  • Hull City Council Logo
  • Energy Store logo
  • Hull City Council Logo

Trusted by Industry Leaders Across the UK

Serving homeowners, landlords, contractors, councils and housing associations

  • CLC Group Logo
  • Cocuun Logo
  • Hull City Council Logo
  • Energy Store logo
  • Hull City Council Logo

Trusted by Industry Leaders Across the UK

Serving homeowners, landlords, contractors, councils and housing associations

  • CLC Group Logo
  • Cocuun Logo
  • Hull City Council Logo
  • Energy Store logo
  • Hull City Council Logo

Trusted by Industry Leaders Across the UK

Serving homeowners, landlords, contractors, councils and housing associations

  • CLC Group Logo
  • Cocuun Logo
  • Hull City Council Logo
  • Energy Store logo
  • Hull City Council Logo

Complete retrofit solutions with compliance built-in

Every service includes full documentation and compliance management

Internal wall insulation installation showing insulation boards being fitted to interior wall in Yorkshire property

Internal Wall Insulation

Solid wall specialists for solid brick properties. Ideal for pre-1920s Yorkshire housing stock. Our IWI experts handle the most challenging retrofit projects with a professional finish ready for decoration.

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Internal wall insulation icon showing solid wall with interior insulation layer

Internal Wall Insulation

Cavity wall extraction process removing failed insulation from Yorkshire property walls by Northern Retrofit specialist

Cavity Wall Extraction

Professional removal of failed or problematic cavity wall insulation with full compliance documentation and remedial solutions.

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Cavity wall extraction icon showing removal of old insulation from cavity wall

Cavity Wall Extraction

Professional cavity wall insulation installation in Yorkshire home with Northern Retrofit installer drilling exterior wall

Cavity Wall Insulation

PAS2030 compliant installation specialists. Perfect for social housing contracts across the North, the Midlands, the East of England and Wales. Our experienced team handles everything from pre-installation surveys to final certification.

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Cavity wall insulation icon showing cross-section of insulated cavity wall

Cavity Wall Insulation

Room in roof insulation installation in Yorkshire loft conversion with specialist insulation around sloped ceiling

Room in Roof Insulation

Specialist service for converted loft spaces. Complex access and configuration expertise improving comfort in upper floor flats.

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Room in roof insulation icon showing converted loft space with insulated sloped walls

Room in Roof Insulation

MCS certified solar panel installation on Yorkshire home roof by Northern Retrofit professional installers

Solar Panel Installation

MCS certified renewable energy specialists. Complete solar installation service including grid connection and performance monitoring setup.

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Solar panel icon showing photovoltaic panel generating renewable energy

Solar Panel Installation

Close-up of a white uPVC window with a gold handle, open onto a garden

Windows and Doors

Certified retrofit window and door replacement with full compliance and fast turnaround.

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Windows and Doors

Professional loft insulation installation in Yorkshire home showing 270mm mineral wool being laid between roof joists

Loft Insulation

All configurations and access challenges. From standard lofts to complex installations. Our team handles awkward access and ensures proper ventilation compliance.

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Loft insulation icon showing house roof section with thick insulation layer

Loft Insulation

Tesla Powerwall battery storage system installation in Yorkshire home garage by MCS certified Northern Retrofit engineer

Battery Storage Solutions

Complete battery installation service with grid integration and performance monitoring for residential and commercial projects.

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Battery storage icon showing home battery system storing solar energy

Battery Storage

Complete whole house retrofit transformation showing before and after Yorkshire property energy efficiency improvements

Whole House Retrofit

Complete energy efficiency programmes combining multiple measures with full PAS2035 coordination and compliance management.

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Whole house retrofit icon showing complete home with multiple energy efficiency measures

Whole House Retrofit

Assessor setting up PULSE air tightness testing equipment inside a home

Air Tightness Testing

Professional airtightness testing services ensuring your retrofit projects meet PAS2035 compliance requirements with minimal disruption to occupants.

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Air tightness testing Hull

Air Tightness Testing

Level 3 energy assessor conducting EPC assessment in Yorkshire property with thermal imaging equipment

Energy Assessments

Qualified assessors for compliance. Complete assessment services including pre and post-installation EPCs and performance evaluation.

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Energy assessment icon showing clipboard with EPC certificate rating

Domestic Energy Assessments

PAS2035 retrofit coordinator reviewing compliance documents and project plans on computer screen

Retrofit Coordination

PAS2035 qualified project oversight. Comprehensive project planning and coordination for multi-measure retrofit programmes.

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Retrofit coordination icon showing project management workflow with compliance checkmarks

Retrofit Coordination

Why people trust Northern Retrofit

Rated 4.6 by homeowners, landlords and housing providers across the UK.

  • Cavity wall insulation
    After receiving a letter from Northern Retrofit informing me of the government scheme to improve insulation and that it was a free service, I was initially sceptic but decided to look into it further and, after a very pleasant phone conversation, I was assured it was ‘legit’ and went ahead with arranging cavity wall insulation which was carried out efficiently by a couple of very pleasant workers who made sure I had everything in place to keep my property sufficiently insulated also checking whether or not I needed ventilation/extractor fans which they were only too pleased to supply and fit at zero cost to me! Excellent service and I would not hesitate to recommend Northern Retrofit.
    Jim Tigernuts2025
  • EPC
    Very happy with the quick service to get a new EPC for my property.
    Chris Lambert-DowellMarch 2026
  • EPC
    Arrived promptly, great communication, inspection carried out of friday, EPC certificate issued on monday, no complaints
    Ellie ShreeveJanuary 2026
  • Room in roof insulation
    From initial contact to completion, the room-in-roof work done by Northern Retrofit on my house was completed to my total satisfaction. The workforce was efficient, friendly, and cooperative throughout the entire process. I would highly recommend this company to anyone considering similar work. One point to note is that, as with any plastering work, dust can get into the air, so it’s important to adequately cover furniture and belongings beforehand.
    Malcolm Broadbent2025
  • Cavity wall insulation
    Highly recommended this company to anyone. We had Cavity Wall insulation, window vents and an extractor fan installed. The process was seamless from the beginning through to the end. Work undertaken was to a high standard. Friendly, reliable and efficient staff who kept us fully informed at all times.
    sally townend2025
  • Loft & cavity wall
    Amazing service from Northern Retrofit, from enquiry to completion of loft and cavity wall insulation 7 days ! Great helpful staff and the installation engineers were courteous and efficient, well done to Northern Retrofit !!
    Tom Rush2025
  • Internal wall insulation
    Great company. Staff were fantastic. Very efficient. Work carried out was amazing. Don’t have many pictures but the finish was great. Would recommend without a doubt. We had internal insulation done
    Lisa Smith2025
  • Cavity wall insulation
    Free cavity wall insulation and extractor fan in bathroom fitted quickly and professionally. Small leakage of beads in the cellar which they came back and sorted the same day I rang. No complaints whatsoever, rare to get a worthwhile service for free! Thank you
    Bella GK.2025
  • Cavity wall extraction
    First class service from Northern Retrofit. We had our old cavity wall insulation taken out, and replaced with new. We were happy from start to finish, and found them to be both friendly and efficient. A special thanks must be given to Lucy in the office, and Kelby and Elliott who carried out the work. We are very happy with the result, it has made the house so much warmer. Thank you.
    Frances Sugden2025