Sunday, 4 October 2026
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Passivhaus designer · Stockport

Phi Architects

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About

Phi Architects: Passivhaus designer, Stockport. An active limited company, incorporated in 2021.

Phi Architects is a Stockport practice specialising in Passivhaus and low carbon design for retrofit and new build projects, with a sister company, phi Low Carbon, offering Passivhaus consultancy to clients and other architects. The practice was established in 2011 and merged with Poulter Architects in 2025; its projects are mainly across the North West.

What they offer

  • Passivhaus design
  • Passivhaus consultancy and PHPP modelling
  • Low carbon retrofit
  • New build housing
  • Decarbonisation of community buildings

Company details

Registered name
Phi Low Carbon Ltd
Incorporated
2021 (5 years on the register)
Company status
Active
Company type
Private limited company
Company number
13644830 (Companies House, opens in a new tab)
Registered office
Profolk, Bank Chambers, Stockport
Nature of business
71111 Architectural activities
Size
Micro business (under 10 staff) (estimated)

Source: Companies House public register.

Areas covered

Serving North West England. View on OpenStreetMap (opens in a new tab)

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