Bow Tie Construction

What Bow Tie Construction does

Bow Tie Construction Ltd is a UK-based specialist construction company headquartered in High Wycombe, delivering low-energy residential building services focused on Passivhaus, EnerPHit, and Energiesprong methodologies across London and the Home Counties. The company serves three principal customer segments: affluent private homeowners commissioning high-specification new builds, extensions, and deep retrofits (typical project values £300k–£2.5M); specialist architectural practices (bere:architects, Prewett Bizley, KIN, Tectonics, Norton Mayfield, among others) that repeatedly commission Bow Tie for technically demanding Passivhaus work; and social housing providers such as Sutton Housing Partnership under Ofgem Eco-funded Energiesprong retrofit programmes.

The company's service portfolio spans low-energy new build construction, deep retrofit and EnerPHit refurbishment, Passivhaus design and certification using PHPP energy modelling, Energiesprong net-zero retrofit delivery, and Loxone smart home installation. Technical differentiators include in-house 3D BIM/Revit pre-construction coordination, MVHR design and installation (Paul Focus 200 / Ventive compact units), airtightness engineering (0.38 ACH demonstrated on Max Fordham House vs 0.6 Passivhaus limit), and the proprietary BowTieSprong / YESporch prefabricated retrofit system developed under an Innovate UK R&D grant. Supply chain partnerships include Beattie Passive (modular timber frame), Tribus 4Walls (insulated airtight structure), and Green Building Store (MVHR and Passivhaus-certified windows). Operational tooling spans Xero, Microsoft 365, Monday.com, and Buildertrend.

The business model is project-based, non-recurring professional services revenue with individually quoted contracts — there are no standardised pricing tiers and no recurring platform revenue. Go-to-market is relationship-driven: the company relies on architect referrals, repeat commissions, and earned media (Grand Designs: House of the Year 2019, Channel 4's Old House New Home) to drive inbound from private clients. The Osborne strategic partnership (March 2021) and Energiesprong social housing channel represent attempts to layer larger-scale, grant-funded revenue on top of the SMB private homeowner base. Award credentials — including CIBSE Project of the Year 2021, RIBA London 2019/2022/2026, and UK Green Building Council recognition of Max Fordham House as the UK's first Net Zero Carbon building — function as primary brand and credibility assets.

Name

Bow Tie Construction

Legal name

Bow Tie Construction Ltd

Website

https://bowtieconstruction.co.uk

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Bow Tie Construction is a UK specialist contractor delivering Passivhaus and EnerPHit-certified new builds, deep retrofits, and Energiesprong net-zero social housing projects for affluent London and Home Counties homeowners, architecture practices, and housing associations.

Ownership category

akta.pro rank

Product category

Sustainable Residential Construction Services

NAICS

Residential Building Construction (23611), New Single-Family Housing Construction (except For-Sale Builders) (236115), Siding Contractors (238170), Foundation, Structure, and Building Exterior Contractors (2381)

SIC

General Bldg Contractors - Residential Bldgs (1520), Construction - Special Trade Contractors (1700)

akta.pro primary industry

Residential Modular & Prefabricated Home Construction (IMAFABAF)

akta.pro secondary industries

Chimney, Parapet & Roofline Masonry Repair (HSAPAKAL), Laundry Room Additions & Relocations (HSAPADAL)

Keywords

• Passive house construction
• Deep retrofit services
• Energiesprong retrofit
• Passivhaus design build
• Sustainable residential construction

Headquarters

HQ city

High Wycombe

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Construction Services (Design & Build): The primary revenue stream is full-service construction contracting, covering new-build, refurbishment, retrofit, and extension projects. Services span from initial design (in-house 3D modelling and M&E design) through to full construction delivery including structural works, insulation, smart home installation, and finishes. Contract values range from approximately £90k to £2.5M per project. Revenue is project-based and non-recurring, generated through competitive bidding and direct commissions.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Bow Tie Construction is a Passivhaus and EnerPHit specialist contractor delivering low-energy new-build homes, deep retrofits of existing properties, and Energiesprong net-zero carbon retrofit programmes for social housing in London and the Home Counties. Services span in-house architectural design (3D BIM/Revit modelling, M&E design), airtightness engineering, MVHR and smart home (Loxone) installation, structural works, and finishes on projects typically valued from £90k to £2.5M.

Product overview

Bow Tie Construction operates as a specialized sustainable construction company offering a comprehensive portfolio of low-energy residential building services. Their core offering combines low-energy new build construction and deep retrofit/refurbishment services, both delivered to Passivhaus or EnerPHit standards. Supporting services include Energiesprong retrofit, Loxone smart home installation, and in-house design services with 3D modelling capabilities. The company also provides a Project Management Platform for client communication and a Ventbox product component for housing mechanical systems in energy retrofits. The overall offering is unified under a sustainability-first approach, with Passivhaus principles and energy efficiency as the common thread across all services.

Differentiator

Problem solved

Functional benefit

Products and services

• Low-Energy New Build Construction Design and construction of new residential buildings to Passivhaus standards, delivering energy-efficient homes with minimal heating requirements through superior insulation, airtightness, and mechanical ventilation with heat recovery (MVHR). Targeted at affluent private homeowners and architectural practices commissioning new-build projects in London and the Home Counties.
• Deep Retrofit & EnerPHit Refurbishment Comprehensive renovation of existing properties to upgrade thermal performance to EnerPHit or near-Passivhaus standards, including internal/external wall insulation, triple-glazed window replacement, MVHR installation, and airtightness improvements. Used by private homeowners, architects, and housing associations.
• Passivhaus Design & Certification Expert Passivhaus design services using PHPP energy modelling software, ensuring buildings meet the rigorous Passivhaus standard for thermal comfort, energy efficiency, and indoor air quality. Used by homeowners and architectural practices seeking certified Passivhaus delivery.
• Energiesprong Retrofit Whole-house energy performance retrofit using the Energiesprong approach, combining external wall insulation, triple-glazed windows, MVHR, off-gas heating with Ventive compact units, and PV integration to achieve net zero energy performance. Targeted primarily at social housing providers under Ofgem Eco funded programmes.
• Loxone Smart Home Installation Intelligent home automation and control system installation managing heating, MVHR, lighting, blinds, electric shutters, and utility metering through the Loxone platform, including integration with Tesla Powerwall and Pichler PKOM4 systems. Targeted at owners of high-spec Passivhaus and EnerPHit homes.
• Design Services In-house architectural design and 3D modelling services using Revit for design development, value engineering, and construction coordination, including full M&E design for projects. Pioneered on the Reigate Passivhaus project for steel structure coordination.
• Ventbox A pre-fabricated technical utility box housing air source heat pump, MVHR unit, thermal store, and ventilation manifold for Energiesprong retrofits, designed to accommodate mechanical and electrical systems externally without taking internal space.

Quantifiable outcome

• 82% reduction in energy consumption after one year of occupation (Notting Hill Mews House Retrofit)
• +6 more outcomes

Named customers14 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

15 partnerships are on record, tiered core and minor.

• Osborne (Construction)coreStrategic or Co-development Partner · 1 March 2021Osborne & Bow Tie Strategic Partnership announced in March 2021. The partnership combines Osborne's major project delivery capabilities with Bow Tie's Passivhaus and low-energy retrofit expertise, particularly for larger-scale sustainable construction programmes.
• Beattie PassivecoreStrategic or Co-development PartnerBeattie Passive and Bow Tie Construction partnered to deliver turnkey Passive House standard homes using the Beattie Passive modular timber frame system. Their first collaboration was a new-build Passive House near Clapham Junction. Bow Tie supplies experienced builders and manages structure erection.
• EnergieSprong UKcoreStrategic or Co-development PartnerEnergieSprong UK selected Bow Tie Construction to deliver the Sutton Energiesprong 6 deep retrofit project for Sutton Housing Partnership. Bow Tie's designers were responsible for all design elements including PAS 2035 assessments, 360° photography, laser scanning, and 3D modelling. The project was Ofgem Eco funded.
• Sutton Housing PartnershipcoreStrategic or Co-development PartnerSutton Housing Partnership commissioned Bow Tie Construction for an Ofgem Eco funded deep retrofit of 6 terraced properties under the Energiesprong methodology. Residents received the retrofit at zero cost. Bow Tie was responsible for all design and construction delivery.
• Eco Design ConsultantsminorStrategic or Co-development PartnerEco Design Consultants acted as architects/designers for the Kensal Green Passive House project, successfully lobbying the local authority for permitted development approval for external wall insulation.
• bere:architectscoreStrategic or Co-development Partnerbere:architects is one of the UK's leading Passivhaus architecture practices. Bow Tie has completed multiple projects for bere:architects (Harpenden Passivhaus, Max Fordham House, Hammersmith, Stamford Brook), representing a deep, ongoing collaborative relationship. bere:architects designed the RIBA award-winning Max Fordham House and Harpenden Passivhaus.
• Prewett Bizley ArchitectscoreStrategic or Co-development PartnerPrewett Bizley is a specialist Passivhaus architecture practice. Bow Tie has completed multiple projects for them including Bloomsbury (EnerPHit refurbishment of Grade II listed Georgian town house) and Notting Hill Mews House Retrofit (RIBA 2022 award winner). A deep, repeat collaborative relationship built on Passivhaus expertise.
• Heath-Walker StudiominorStrategic or Co-development PartnerHeath-Walker Studio (Jeremy Walker) brought Bow Tie into the Bounds Green project — a conservation area shopfront and home refurbishment with two-storey extension, MVHR, and Loxone smart home.
• Monahan Blythen Hopkins ArchitectsminorStrategic or Co-development PartnerMonahan Blythen Hopkins Architects engaged Bow Tie for the Potters Bar extension and refurbishment project — a luxury project more than doubling the floor area with a separate swimming pool building.
• Norton Mayfield ArchitectsminorStrategic or Co-development PartnerNorton Mayfield Architects commissioned Bow Tie for the Putney EnerPHit refurbishment of a 1950s house in Putney back lot.
• Tectonics ArchitectsminorStrategic or Co-development PartnerTectonics Architects commissioned Bow Tie for the Arts and Crafts House project — a full renovation, kitchen extension, and swimming pool build with zinc roof finishes.
• KIN (Architecture)minorStrategic or Co-development PartnerKIN architecture practice engaged Bow Tie for the Camden Town replacement eco-house project. The clients were attracted to Bow Tie following their experience observing the Max Fordham House build on the same mews.
• Enbee Architecture + DesignminorStrategic or Co-development PartnerEnbee Architecture + Design commissioned Bow Tie for the Tottenham full refurbishment project including subsoil heat exchanger, Loxone smart home, Icynene insulation, and basement utility.
• Dominic O'Riordan (Architect)minorStrategic or Co-development PartnerDominic O'Riordan commissioned Bow Tie for the Muswell Hill EnerPHit refurbishment of a 6-bedroom home.
• Connected Places CatapultminorStrategic or Co-development PartnerConnected Places Catapult featured Bow Tie Construction's innovation in a Construction Innovation showcase, part of a programme exploring augmented reality and other technologies for the construction sector.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Etopia Homes: Modular/factory-built low-energy homebuilder focused on net-zero housing; competes with Bow Tie's prefab/Energiesprong approach for sustainable-construction project pipelines.
• Beattie Passive: UK modular timber-frame Passivhaus system provider and direct Bow Tie delivery partner; both firms co-deliver turnkey Passivhaus new-builds and share overlap in the London low-energy new-build market.
• Passivhaus Homes: UK Passivhaus new-build and retrofit contractor operating across southern England; directly competes for the same Passivhaus-certified residential work Bow Tie targets.
• Progetti Homes: UK Passivhaus new-build specialist designing and constructing certified low-energy homes; overlaps with Bow Tie on affordable-to-mid Passivhaus project segments.

Others

• Green Building Store: UK supplier of Passivhaus-certified windows, MVHR units and components used on Bow Tie projects; ecosystem participant that actively recommends Bow Tie for London installations.

Broad incumbents

• Willmott Dixon: Major UK contractor with established sustainability and retrofit programmes; competes for net-zero social-housing and retrofit tenders at a scale Bow Tie currently cannot match alone.
• Skanska UK: Tier-one UK contractor with deep decarbonisation and retrofit capabilities; competes for institutional-scale net-zero programmes that Bow Tie addresses through Osborne partnership or Energiesprong tenders.
• Osborne Construction: Established UK infrastructure and construction contractor with whom Bow Tie formed a strategic partnership in 2021; larger-scale partner that complements Bow Tie's Passivhaus IP with broader project delivery capability.
• Mace Group: Global construction and consultancy group with a dedicated sustainability practice; broader incumbent competing on large-scale low-energy and retrofit programmes.

Emerging players

• Eco Design Consultants: Sustainable design-and-build practice that has worked with Bow Tie on Permitted Development external insulation projects; an emerging player combining architecture and low-energy construction similar to Bow Tie's integrated design-build model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/bowtiecon
• LinkedInlinkedin.com/company/bow-tie-construction

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 Bow Tie Construction