Granny Annexes

In most jurisdictions, granny annexes intended for habitation require planning permission because they constitute a separate dwelling unit. Some may qualify as ancillary accommodation under Permitted Development if occupied by a family member and sharing facilities with the main dwelling. Requirements vary significantly between local authorities and countries. Dealers should advise customers to consult their local planning department before proceeding with any order.

Yes, Building Regulations approval is mandatory for granny annexes used as sleeping accommodation in the UK and most European markets. This covers structural integrity, fire safety, thermal performance, ventilation, electrical safety, and drainage. Eurodita provides comprehensive technical documentation including structural calculations, thermal performance data, and CE marking certificates to support Building Regulations applications.

For permanent residential habitation, a minimum of 70mm solid log walls is recommended. For enhanced thermal performance meeting current building regulation standards, twin-skin construction (44+50+44mm = 138mm total, or 58+50+58mm = 166mm total) with insulated cavity is the preferred specification. Glulam walls at 135mm, 180mm, or 220mm provide the highest performance for year-round residential use.

Eurodita granny annexes are manufactured with pre-planned utility routes for kitchen and bathroom installation. Plumbing connection points, waste pipe routes, and electrical supply positions are designed into the floor plan during the specification stage. Final kitchen and bathroom fit-out is completed on site by qualified trades. Water supply and drainage connection to mains services requires professional installation.

Eurodita granny annexes can be specified with accessibility features including 900mm+ wide doorways for wheelchair access, level thresholds (flush entry without steps), reinforced walls for grab rail installation, walk-in shower provisions, and open-plan layouts to maximise manoeuvrability. These features should be specified at order stage to ensure manufacturing accommodates the requirements.

Granny annexes are delivered as flat-pack kits with all components numbered for assembly. Standard models are produced within 2-4 weeks. Bespoke designs require 4-8 weeks, and glulam construction 8-12 weeks. Shell assembly typically takes 1-2 weeks depending on size and specification. Internal fit-out including plumbing, electrical, and finishes adds additional time depending on the specification level.