Mi Design

Mi Design Excellence in Building A family run construction company based in Hertfordshire � Specialists in New Builds | Extensions | Loft conversions

Mi DESIGN........ a design and build Company
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Excellence in Building and Refurbishment. Hello, we are a well established and recognised Building Company serving Hertfordshire and the surrounding area. We specialise in all types of large to small extensions, loft and home refurbishments, we are a family firm with our employed "in house" plumbers and elect

ricians to over come those troublesome trades so to eliminate delays and keep to build schedules so to keep your disturbance to a minimum. We have also been commissioned by private individuals to undertake building their Dream homes that's been constructed under the NHBC solo build scheme. All of our work it to a very high standard and all is to Building Regulation Approval by the Local Authority. We are experienced in working alongside Architects or working directly with the house owner, in both cases we suggest working under the JCT Minor Works Building Contract. All of our work is guaranteed and no payment is required in advance or deposits taken, we usually work 2 or 4 weeks in arrears with a fully detailed invoice emailed over prior to any payment. A no cost and no obligation fully detailed quotation will be supplied, I am happy to meet home owners out of the "normal" working hours and once work has started we suggest weekly site meetings and again these can be at any time that is convenient to you, updating with you the work progress, time schedules and areas of work that will be coming up. As a Building Company with a Project Management background we strive to work alongside the house owner keeping them up to date in all aspects of their project, one of our main advantages over other "Builders" is that we only undertake one project at a time, so at no point that there are no tradesmen on site and as I'm a Carpenter and Joiner by trade, I'm also on site everyday assisting my workforce but also looking after your project without compromise. Thank you for your time, I will be more than happy to supply you a detailed fixed price quotation for your proposed building work, my mobile number is 07821181200 or if your require my email is [email protected]. References can be supplied on request. Many thanks




Martin Wood
Mi Design Associates Ltd

Another project completed in St Albans 👌🏼🏡✅We recently finished this one featuring a single storey rear extension creati...
18/05/2026

Another project completed in St Albans 👌🏼🏡✅

We recently finished this one featuring a single storey rear extension creating a bright open plan kitchen/family space perfect for modern living.
We reconfigured the layout to make way for a new utility area, renovated the downstairs WC, and completed a rear garden landscaping package to tie everything together beautifully.
A great result inside and out 🏡

Project update from Wheathampstead The roof is complete and the stud walls are now formed, first fix plumbing and electr...
15/05/2026

Project update from Wheathampstead

The roof is complete and the stud walls are now formed, first fix plumbing and electrics started 💪🏼
This one is moving along nicely and the spec is going to be something special… keep your eyes peeled 🏡

Big progress on our St Albans extension & renovation 🔨 internally stripped out, brick/block work flying up and
Steels ar...
06/05/2026

Big progress on our St Albans extension & renovation 🔨 internally stripped out, brick/block work flying up and
Steels are going in this week then we’re getting ready for joisting 💪🏼
Progress is great so far with plenty more in the schedule. Keep an eye on this one 🏡

Progress update from one of our St Albans projects 👷‍♂️🏡Moving smoothly from ground floor right up to the roof! All stee...
28/04/2026

Progress update from one of our St Albans projects 👷‍♂️🏡
Moving smoothly from ground floor right up to the roof! All steelwork is now in place and signed off by building control ✅ Stud walls are formed on the first floor and roof construction is officially underway.
Materials are all on site and ready to go. Shaping up to be an exciting week ahead 💪🏼

Great progress on our Harpenden loft, extension & full refurb 🙌🏼Top two floors now first fix complete, boarded & skimmed...
17/04/2026

Great progress on our Harpenden loft, extension & full refurb 🙌🏼
Top two floors now first fix complete, boarded & skimmed, drying out nicely and getting prepped for bathroom tiling. Second fix electrics well underway.
Externally, pebble dashing is coming together to match the existing and really starting to transform the look 💪🏼
Big effort from the team as always, let’s keep the momentum going for another strong week 👌🏼🏡

Steels installed ✅
Joists fitted ✅
Kitchen floor lowered ✅Chimney stack removed ✅ 
Blockwork pushing on✅A productive wee...
20/03/2026

Steels installed ✅
Joists fitted ✅
Kitchen floor lowered ✅
Chimney stack removed ✅ 
Blockwork pushing on✅
A productive week on site with solid progress across key stages of the build.

Watch this space 🏡🏡

Our loft conversion, extension & refurb project in Harpenden is coming along nicely 🙌🏼🏡Roof tiling is nearly complete an...
20/03/2026

Our loft conversion, extension & refurb project in Harpenden is coming along nicely 🙌🏼🏡
Roof tiling is nearly complete and 1st fix carpentry is now wrapped up ready for plumbing and electrics to get underway 💪🏼
Big shoutout to our team for the solid progress on this one 👏🏼
More updates coming soon, watch this space 🏡

Our Harpenden loft conversion is looking 🤌🏼Main roof structure complete and ready for our roofing contractor to start ne...
07/03/2026

Our Harpenden loft conversion is looking 🤌🏼
Main roof structure complete and ready for our roofing contractor to start next week ✅
Great work from the team bringing this one together 🏡🔨

Progress from our team on one of our St Albans projects 💪🏼Brick and block work up to joist height, with openings formed ...
06/03/2026

Progress from our team on one of our St Albans projects 💪🏼
Brick and block work up to joist height, with openings formed and ready for the steel installation next week. Once the steels are in, we will be installing the joists and continuing to build up from there 🏡

Great work from our team this week for  Up to DPC and block & beam ready for superstructure next week 🏡Momentum is build...
20/02/2026

Great work from our team this week for
Up to DPC and block & beam ready for superstructure next week 🏡
Momentum is building! Let’s push for another strong week 💪🏼🔥

New project underway ✅We’re excited to kick off another fantastic build that we’ve been awarded! This one includes a rea...
18/02/2026

New project underway ✅
We’re excited to kick off another fantastic build that we’ve been awarded! This one includes a rear and side double storey extension, a single storey front extension, plus a full internal refurbishment, a complete transformation in the making 🏡✨
First step complete, foundations dug out and ready for the concrete pour tomorrow 💪🏼
Looking forward to taking you along on the journey and sharing every stage of the progress. Stay tuned! 🔨🏡

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Saint Albans

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