What Green Building Store does

Green Building Store is a UK-based specialist supplier of sustainable and green building products — including high-performance windows and doors, heating and ventilation systems such as heat pumps and MVHR (Mechanical Ventilation with Heat Recovery), airtightness solutions, and water-saving equipment — serving homeowners, self-builders, architects, commercial customers, and public-sector councils. Operating since 1995 from Huddersfield with 11–50 employees, the firm combines a curated product catalogue spanning building fabric and renewable energy hardware with a technical sales motion that includes showroom consultation, design and Passivhaus consultancy, and credit-broking services subject to FCA authorization (registration 1003260). Its competitive positioning rests on a deep accreditation stack — Passivhaus Trust, MCS, Trustmark, CHAS, Gas Safe, RECC, Refcom, and AECB — that satisfies UK grant and code-compliance requirements and supports differentiated service to architects, specifiers, and commercial clients.

The product portfolio is bifurcated between project-scale systems (solar panels, solar batteries, air-source and ground-source heat pumps, triple-glazed windows and doors, MVHR units, airtightness products, and rigid-foam insulation boards such as Compacfoam) and a complementary e-commerce range of consumables and accessories (MVHR filters, loft hatches, specialist insulation, performance sealing) sold via a direct online shop. Underlying technical differentiation comes from bespoke MVHR system design, Passivhaus-led detailing and buildability support, and whole-building low-energy design services that exceed UK building regulations; these are bundled with CPD-accredited training for building professionals. Revenue mechanics span hardware sales (direct and e-commerce), professional services (design, Passivhaus consultancy, training), and credit-broker transaction fees authorized through Shermin Finance Limited, with quote-based project pricing and free initial estimates as the customer-acquisition entry point.

Go-to-market is hybrid and channel-rich: direct enterprise sales into commercial and public-sector accounts (including NHS, education, agriculture, and SMEs), showrooms and technical specification support for architects and self-builders, an Odoo-powered self-serve shop for repeat consumables, and a content-and-CPD funnel anchored by a Knowledge Hub of case studies, guides, and technical resources. Marketing relies on organic SEO, content marketing, training events, and Trustpilot review signals, while distribution is supported by a network of installation professionals and partnership integrations with credit providers, energy retailers (Octopus Energy), and smart-home platforms (Hive).

Name

Green Building Store

Legal name

GoEco Renewables Limited

Website

https://greenbuildingstore.co.uk

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

11–50 employees

Short description

Green Building Store is a UK-based specialist supplier, founded in 1995, of sustainable and green building products — including high-performance windows, doors, HVAC and ventilation systems, and water-saving equipment — serving homeowners, self-builders, architects, commercial clients, and public-sector councils.

Ownership category

akta.pro rank

Product category

Energy-Efficient Building Products

NAICS

Home Centers (444110), Other Building Material Dealers (44418), Building Material and Supplies Dealers (4441)

SIC

Retail-Building Materials, Hardware, Garden Supply (5200), Retail-Lumber & Other Building Materials Dealers (5211), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Residential Green / High-Performance Home Construction (Net-Zero, Passive House) (IMAFABAH)

akta.pro secondary industries

Doors, Windows & Millwork Retail (Interior/Exterior Doors, Windows, Moulding) (CRAIAEAI), HVAC Equipment (Heating, Cooling & Air Handling) (IMAHAKAB), Green Power Retailing & Bundled Supply (Energy + Certificates) (EUAGAFAE)

Keywords

• Energy-efficient building products
• Passivhaus consultancy
• Heat pump installation
• Solar panel supply
• MVHR ventilation systems

Headquarters

HQ city

Huddersfield

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Supply Chain, Personnel, Operations, Marketing or Sales, Infrastructure, Technology or R&D

Revenue model

1. Product Sales: Sale of hardware products including solar panels, solar batteries, heat pumps (air source and ground source), triple-glazed windows and doors, MVHR units, airtightness products, Compacfoam insulation, MVHR filters, loft hatches, and specialist insulation. Products sold through e-commerce shop and direct sales.
2. Design & Consultancy Services: Professional services including MVHR system design, Passivhaus consultancy, and low-energy design service. These consultancy offerings support self-builders, architects, and commercial clients through the design and specification process.
3. Training & CPD: Specialist design and construction training for building professionals, including Passivhaus standards training and CPD sessions.
4. Credit Broking Services: The company is an Appointed Representative of Shermin Finance Limited, undertaking credit broking activities. Credit provided subject to age, status and affordability for heat pumps, solar installations, and other energy efficiency upgrades.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

Green Building Store supplies energy-efficient building products — solar panels, solar batteries, air-source and ground-source heat pumps, triple-glazed windows and doors, MVHR ventilation systems, airtightness products, and Compacfoam rigid insulation — alongside complementary MVHR design services, Passivhaus consultancy, and a low-energy whole-building design service. Products are sold via showrooms and an e-commerce shop, with credit-broking support and CPD training programmes for building professionals.

Product overview

21 Degrees is a UK specialist in energy-efficient homes and buildings, operating as a unified product and service portfolio. The core offering centers on energy-efficient building products including solar panels, solar batteries, heat pumps (air and ground source), triple-glazed windows and doors, MVHR ventilation systems, airtightness products, and Compacfoam rigid insulation boards. These products are complemented by expert design services including MVHR system design, Passivhaus consultancy, and low-energy design services. The company also operates an e-commerce shop selling essential components including performance sealing, MVHR filters, loft hatches, and specialist insulation. Services target homeowners, architects, commercial buildings, councils, and self-builders seeking Passivhaus certification and low-energy building solutions.

Differentiator

Problem solved

Functional benefit

Products and services

• Solar Panels High-efficiency solar PV panels for residential and commercial properties, supplied to reduce carbon footprint and energy costs.
• Solar Batteries Battery storage systems that store solar energy for later use, increasing self-sufficiency and reducing grid reliance.
• Heat Pumps Air-source and ground-source heat pumps for energy-efficient heating, with access to MCS certification enabling grant eligibility.
• Windows High-performance triple-glazed windows for superior energy efficiency and comfort, including a Passivhaus-specification window range.
• Doors High-performance triple-glazed doors delivering comfort and energy savings, suitable for Passivhaus designs.
• MVHR Systems Mechanical Ventilation with Heat Recovery systems delivering fresh filtered air while retaining heat energy for airtight low-energy buildings.
• Airtightness Products Airtightness membranes, tapes, and sealants supplied for achieving high-performance low-energy buildings.
• Compacfoam Insulation Rigid insulation board that minimises thermal bridging with superior thermal insulation performance.
• MVHR Design Service Bespoke MVHR system design consultancy for healthier, efficient airtight buildings, tailored to project geometry and performance targets.
• Passivhaus Consultancy Passivhaus-led guidance ensuring practical detailing and buildability across high-performance projects delivered by certified practitioners.
• Low Energy Design Service Whole-building design support helping self-builders realise low-energy homes that exceed UK building regulation energy performance targets.
• Performance Sealing Products Specialist insulation and sealing products for performance-driven airtightness applications, available via the online shop.
• MVHR Filters Replacement filters for MVHR ventilation systems, available via the online shop.
• Loft Hatches Specialist loft hatches designed for energy-efficient buildings, available via the online shop.
• Specialist Insulation Specialist insulation products for airtightness and high-performance applications, available via the online shop.
• Credit Broking for Energy Efficiency Installations FCA-regulated credit broking service (Appointed Representative of Shermin Finance Limited) arranging finance for heat pumps, solar installations, and other energy efficiency upgrades via a panel of lenders, subject to affordability checks.

Quantifiable outcome

• Passivhaus certification achieved for completed projects
• +1 more outcomes

Named customers4 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Ten partnerships are on record, tiered core and moderate.

• RefcomcoreOthersRefcom is an industry certification body for refrigeration and air conditioning. Membership indicates compliance with industry standards for heat pump and cooling installations.
• NSBRC (National Self Build & Renovation Centre)moderateGTM or Marketing PartnerPartnership with the UK's only permanent exhibition centre for self-build and renovation, providing marketing and educational outreach to self-builders.
• Passivhaus TrustcoreStrategic or Co-development PartnerStrategic partnership with the Passivhaus Trust demonstrates expertise in Passivhaus standards. The company offers Passivhaus consultancy and design services as certified practitioners.
• RECC (Renewable Energy Consumer Code)coreOthersRECC membership ensures compliance with consumer protection standards for renewable energy installations, building trust with homeowners.
• CHAS (Contractors Health and Safety Assessment Scheme)coreOthersCHAS accreditation demonstrates health and safety compliance for commercial and public sector contract work.
• Gas Safe RegistercoreOthersGas Safe registration is legally required for gas work in the UK. Essential certification for heat pump and gas installation services.
• TrustmarkcoreOthersTrustmark is a government-endorsed quality scheme for tradespeople. Provides consumer confidence for domestic installations.
• AECB (Association for the Conservation of Energy)moderateGTM or Marketing PartnerAECB membership connects 21 Degrees with the sustainable building community and provides access to specialized expertise in low-energy construction.
• MCS (Microgeneration Certification Scheme)coreOthersMCS certification is essential for heat pump and solar installations to qualify for UK government grants and incentives.
• Octopus EnergymoderateStrategic or Co-development PartnerPartnership with Octopus Energy for renewable energy solutions, potentially providing integrated solar and battery offerings with energy tariffs.

Scale indicators2 records

Recent moves6 records

Expansion highlights6 records

Emerging players

• Heat Geek: UK heat-pump training and installation platform growing share in the same residential low-carbon heating segment where 21 Degrees sells and specifies heat pumps and MVHR.
• Passivhaus Homes: UK Passivhaus design-and-build specialist competing for the same self-builder and architect segments that value certified low-energy construction services.

Direct peers

• Ecological Building Systems: UK and Ireland distributor of natural insulation, airtightness membranes, and MVHR systems—the most direct comparator in technical building-fabric supply for low-energy construction.
• Ecomerchant: UK online retailer of sustainable building materials—insulation, airtightness, lime products—and technical support to trades and self-builders, overlapping heavily with 21 Degrees' e-commerce and technical sales motion.
• Natural Building Technologies (NBT): UK supplier of natural and high-performance insulation plus technical support services to architects and self-builders, mirroring 21 Degrees' product-plus-consultancy model.
• Back to Earth: UK sustainable building materials retailer and consultancy serving self-builders and architects with insulation, lime, and timber products for low-energy construction.

Broad incumbents

• Solarcentury (Statkraft): Long-established UK solar installer and developer, now part of Statkraft, offering end-to-end residential and commercial solar PV—overlapping 21 Degrees' solar panel offering at much greater scale.
• EnviroVent: Established UK manufacturer of MVHR and ventilation systems sold via installer networks; broader product portfolio and larger scale than 21 Degrees' specialist MVHR design and supply offering.
• Octopus Energy: Large UK energy retailer now bundling solar, battery, and heat pump installations via in-house and partner networks—an overlapping channel for residential low-energy upgrades and a strategic partner on 21 Degrees' site.

Regional players

• The Green Home Store: Independent retailer of eco-friendly building products serving the UK self-build and renovation market with comparable category breadth to Green Building Store's original retail proposition.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/passivhausnews

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Green Building Store