Phase Design and Build

Phase Design and Build Bespoke micro constructions | 01579 560124 | [email protected] | www.phasedandb.com

02/02/2026

Luke gives us a behind the scenes look at one of our current builds on site, a supplementary workshop parallel to our previously constructed garden room for our clients in St Mellion, Cornwall.

PHASE- Specialists in garden rooms and studio annexes.
[email protected] | 01579 560124

If you’re thinking about a detached studio, annex, or holiday cabin retreat — download this first ⬇️We have just release...
23/01/2026

If you’re thinking about a detached studio, annex, or holiday cabin retreat — download this first ⬇️

We have just released our brochure for 2026! Download here now from our landing page- www.phasedandb.com.

Who are they for?
From homeowners with space in their garden to holiday operators looking to add to their site portfolio, we are here to install your new spaces.

01579 560124
[email protected]
Unit 18 Trelawney Business Park, Callington, Cornwall, PL17 7SD

19/01/2026

Do I need planning permission for a garden studio?
In most cases, planning permission is not required for a garden studio, provided it adheres to specific size and height restrictions. The studio must not occupy more than 50% of your existing garden and should comply with other parameters set by the local authority.

Do I need building regulations approval?
For structures under 15m², building regulations approval is generally not necessary. If the floor area is between 15m² and 30m², approval is typically not required as long as the studio does not include sleeping accommodation and is either at least one meter from any boundary or constructed primarily of non-combustible materials. If the size exceeds 30m², approval will be required, and the studio must meet the same standards as if it were an extension to your home. Our team is available to assist you with this process.

Are your garden studios warm?
Absolutely! Our garden studios are designed with a minimum specification that includes thermal and acoustically rated insulation. Additionally when meeting building regulations requirements the heat loss calculations and specifications will again be equivalent to those of an attached home extension, ensuring a comfortable environment.

How much do your garden studios cost?
The cost of our garden studios varies based on size, design, intended use, and customisation. We offer standard specifications that can be adjusted to meet your requirements, as well as in-house design services for a fully bespoke architectural feature. Our packages start from £5,000 for a small office pod and starts from £20,000 for a bespoke design.

Do you provide soundproofing?
Yes, we have extensive experience in soundproofing and can guide you through the additional specifications needed for your specific requirements. Whether you need a soundproof space for drumming, a cosy cinema room, or a silent home office, we will ensure that you and your neighbours do not experience any unwanted noise.

www.phasedandb.com
[email protected]

The work commute killer ❌Phase Studio Annexes- By Phase Design and Build 01579 560124 | office@phasedandb.comUnit 18 Tre...
12/01/2026

The work commute killer ❌

Phase Studio Annexes- By Phase Design and Build

01579 560124 | [email protected]
Unit 18 Trelawney Business Park, Callington, Cornwall, PL17 7SD
www.phasedandb.com

05/01/2026

Start the new year off with extra space for your home!

Garden Rooms prefabricated and delivered Nationwide, or built on site.

Phase Studio Annexes- by Phase Design and Build

01579 560124 | [email protected]
Unit 18 Trelawney Business Park, Callington, Cornwall, PL17 8FJ

Call now to connect with business.

02/12/2025

Check out our refreshed website! www.phasedandb.com
_ _ _

10% off all studio annexes with a PL postcode confirmed before Christmas! ❄️
01579 560124
[email protected]

01/12/2025

Make the most of your outdoor space this winter with a bespoke Garden Studio or Annex by Phase Design & Build- 10% off for all jobs with a PL Postcode agreed to start before Christmas! ❄️

Beautifully designed, fully insulated, and tailored to your needs – perfect for:
•⁠ ⁠A home office or creative studio
•⁠ ⁠A gym or entertainment space
•⁠ ⁠A study/ music room (soundproofing available) or hangout
•⁠ ⁠Guest or family accommodation*
And more! Limited build slots available before Christmas – from just £10,000* (plus VAT).

Get in touch today to discuss your project

Contact the team today to arrange a free consultation or learn more about our bespoke garden studio annexes and secure your pre-Christmas start for our 10% discount.

Contact: [email protected] | 01579 560124 | Unit 18 Trelawney Business Park, Callington, Cornwall, PL17 7SD

*planning permission is required for any sleeping accommodation. *Subject to design and specification

Call now to connect with business.

10/11/2025

Make the most of your outdoor space this winter with a bespoke Garden Studio or Annex by Phase Design & Build.
Beautifully designed, fully insulated, and tailored to your needs – perfect for:
💼 A home office or creative studio
🧘‍♀️ A gym or wellness retreat
👩‍🎓 A study/ music room or hangout
👵 Guest or family accommodation
✨ And more! Limited build slots available before Christmas – from just £10,000* (plus VAT)
Don’t miss your chance to create extra space before the Christmas holiday.
📅 Get in touch today to discuss your project and secure your pre-Christmas build.
✨ Contact the Phase Design & Build team today to arrange a free consultation or learn more about our bespoke Garden Studio Annexes.
📲 [email protected] | 01579 560124 | Unit 18 Trelawney Business Park, Callington, Cornwall, PL17 7SD *planning is required for any sleeping accommodation. *Subject to design and specification

🏡 Create Your Perfect Garden Studio Before Christmas – Limited Space Available!  If you’ve been thinking about adding a ...
10/11/2025

🏡 Create Your Perfect Garden Studio Before Christmas – Limited Space Available!
If you’ve been thinking about adding a Garden Studio or Annex to your homes garden, now’s the time to make it happen.
At Phase Design & Build, we currently have limited availability to complete garden studio projects before Christmas – ideal for anyone looking to make the most of their outdoor space before the new year, whilst adding more space to your home before family and friends come around for the holiday! Planning permission not required! We are able to start immediately once our quotation is accepted.
Our annexes are designed bespoke for your space available, fully insulated, and built to last far beyond a typical outbuilding, providing the perfect solution for:
💼 A dedicated home office or creative studio
🧘‍♀️ A personal gym or wellness retreat
🎨 A music or art space
👩‍🎓 A study room or hangout
👵 Comfortable accommodation for guests or family*
🎄 Or simply an all-season space to enjoy over the holiday
Each studio is crafted with care, combining high-quality materials, smart design, and seamless integration with your existing garden.
📅 With installation slots filling fast, now’s the moment to get in touch and secure your project before it’s too late.
✨ Contact the Phase Design & Build team today to arrange a free consultation or learn more about our bespoke Garden Studio Annexes.
📲 [email protected] | 01579 560124 | Unit 18 Trelawney Business Park, Callington, Cornwall, PL17 7SD *planning is required for any sleeping accommodation

We had a brilliant time up in Liverpool at The UK Drum Show showcasing our prefabricated soundproof garden drum room sol...
21/10/2025

We had a brilliant time up in Liverpool at The UK Drum Show showcasing our prefabricated soundproof garden drum room solution! Delivered nationwide.

We had many interesting conversations and any follow ups can be made to [email protected], or 01579 560124!

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Callington

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