Full 2
Two week or less installation guarantee
Full 1
Bespoke design, premium quality and hassle free experience
Full 3
A cost-effective, fully insulated practical space solution
previous arrow
next arrow


Pecasa Design , Manufacture and Install Premium Garden Rooms in a fast, innovative and hassle free way to offer extra space at home. We take great pride in having developed a unique process, which not only delivers a quality product above expectation in the shortest time “two weeks or less installation” but also with no disruption to you during the very few days of installation. We achieve this by manufacturing and assembling most of your Pecasa Garden Room from scratch in our local Warehouse by our specialist and experienced tradespeople. This way, the messy and noise hard work is done away from your home! According to research, there are huge benefits to the extra space a garden room provides, which significantly increases the overall “feel-good” in a household, as well as the value of your home.

annex-range-compressed (4)

SIP panels

A high-performance building technology for residential and light commercial construction is structural insulated panels (SIPs). The panels are made up of two structural facings, usually oriented strand board, and an insulating foam core OSB). SIPs may be built to meet almost any building design and are produced in factory-controlled environments.


Screw foundation

Screw piles can be used all year. By removing the complications that come with using concrete, we are much less reliant on dry weather to get cracking on your project. We install projects all year round, and our professional team has battled heatwaves and snowstorms to ensure that every project we undertake is completed on time and to the same high standard.


Composite Fascia

A synthetic substitute for wood, Composite Fascia is made by blending different elements to produce a product that resembles wood but is more dependable and constant. Our British manufactured composite fascia is B-s2,d0 fire rating in accordance with BS EN 13501-1:2018.

Annexe Range

Pecasa Annexes are affordable living spaces with cooking and washing facilities that offer independence to a family member away from the main home but still close enough to have day to day support, as needed. Choose Pecasa Premium Annexes that are both large and little, fully approved by construction codes, with a bathroom, kitchen, contemporary accents in graphite and black, and an overhanging roof.

Contact us today to book your free consultation.

Pecasa Premium Garden Rooms and Annexes are cost effective, fully insulated practical space solutions to expanding your home, adding a quality environmentally friendly, sustainable and energy efficient space for year round use.


    Two Week Installation




    High Quality British Manufactured


    Fully Customisable