Welcome to IN4structure

The South’s first choice in principal contractors

– The South’s first choice in principal contractors –


IN4structure is a building and contractor team based in Portsmouth which was formed in 2012 . Operatives have been hand picked creating a bespoke team ready for a complete bespoke building service.

Our bespoke services include: Kitchens, Bathrooms, Wetrooms, Disabled adaption shower rooms, Bespoke Carpentry including all joinery works, Property refurbishment, specialist basement waterproofing, damp proofing and remedial repairs & structural repairs including underpinning.

We are CHAS health and safety approved and undergo annual updates to ensure we are fully compliant.
We are also Wykamol & Thor Helical approved contractors undertaking full structural waterproofing, damp proofing & structural repairs to buildings across the south of England. All surveyors are CSRT & CSSW trained and qualified to ensure competence and compliant remedial surveys and proposals are undertaken.

Our clientele ranges from private customers to local and district councils across the south coast .
We offer complete assurance from start to completion of any claim along with many other insurance claims handling companies.

IN4structure are proud members of Checkatrade


For our specialist services IN4structure are Wykamol approved contractors.

As an approved contractor Wykamol keep us informed regarding new building legislation and best practice. IN4structure have access to technical support, advice and training 24/7. Keeping us up to date on installation, maintenance and products.

Wykamol stock all products for Damp proofing, Gas and water proofing, Structural repairs, Timber treatments, Surface treatments and Anti condensation.


IN4structure are approved installers of AKW products.

AKW are a UK based company with thousands of products in stock for accessible showering, bathrooms, kitchens and mobility aids for the elderly and less able,

AKW design and manufacture products specifically for the user. All products can be delivered the next day to the site address.

AKW supply products for Bathrooms, Wetrooms, and Kitchens as well as Grab rails, Shower seats, Ramps and thresholds.


Howdens Joinery

Howdens are the UK’s largest designer and manufacturer of fitted kitchens and joinery products.

Howdens create bespoke designs tailored to your home and with products available from local stock, without delay.

Howdens sell directly to trade and have a valued relationship with local builders , This is why IN4structure work along side Howdens.


Click the Contact Us button and fill out our quick, simple form and a member of our team will call you back to discuss your requirements. Alternatively call us now on 02392363349.