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Extension and Home Renovation Specialist Builder in York

Whether you are looking to build a whole new home, extend your existing home to gain more space, or renovate your home - our dedicated team of skilled craftsmen will bring your dreams to life.

Build, extend, or renovate your home in Yorkshire

Satisfaction Guaranteed

We treat every project with the respect it deserves, and don't stop until you are satisfied.

View All Services
  • Highly Experienced Team
  • Completely Reliable - We do what we say, when we say we will!
  • Fully Insured and Warrantied
  • Reputation Proceeds Us...

Services

Extensions

If you have space around your home at the side or rear then extending is a great way to increase living space and the value of your property.

Extensions

Loft Conversions

Your loft can be easily and inexpensively converted into a guest bedroom, home office, or a beautiful new master suite.

Loft Conversions

Home Office & Garden Rooms

Bring the outside in and build a home office or garden room in amongst the nature of your garden and maximise the use of your outside space and improve your quality of life.

Home Office & Garden Rooms

New Build

Ever dreamt of being involved in building your own custom house suited to your personal needs? We have theability! We work with architects that can handle the planning and design, and we deliver the best house you can imagine

New Build

Project Management

Our team manages the complete project from the first architectural sketch to planning application, to tradesmen, to completion. A complete service ensures the best quality work and finish with the least stress!

Project Management

Commercial & Industrial

We offer more than just domestic building services, we can also do commercial and industrial work from small tasks all the way to constructing entire new factories or farm buildings. Just get in touch to find out what we can do for you.

Commercial

Areas Covered

AG Developments are based in York and Pocklington but we cover all the areas surrounding. We have done projects in Acomb, Heworth Huntington, Haxby, Strensall, Dunnington, Wilberfoss and many many more locations. Travel is no issue and even better...



We Are Green

We believe in doing the best for the environment. We understand the impact works can have. Thats why we recommend energy efficient products and we offset our carbon. Check out the trees we have planted below!


We plant trees with Ecologi

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Testimonials

We post regular updates on instagram of works we have in progress right through to completion. You can see the quality of our work right through the building process and see the end result. Why not have a browse and get some inspiration!


Below are some words from satisfied customers. These are real live customers we have completed projects for. We can arrange for a chat with customers so you can get the whole picture from people who have experianced our service.

Quick Pictures

Our loft conversion is coming to an end, we’ve enjoyed this one! #loftconversion #building #extensions #homedesign #tiling #bathroom @mkm_york @toppstiles @howdensyork @jewsonuk
Here’s an extension we are currently building, we are two weeks in now to give you an idea of our teams efficiency #building #bricks #extensions #homeimprovement
Day 4 on the Acomb loft conversion. OSB cladding on. Roof trims and base coat all applied, ready for sanding and top coating tomorrow. Then it’s time to do the floor joists, stairs soon! #building #loftconversion #loftextension #joinery #grp
Day 3 - a HUGE loft conversion, Acomb - York. We are enjoying seeing this take shape so quickly #loftconversion #goodviews #extensions #building #flatroofing
This is day 2 on our loft conversion in Acomb, York. Let’s keep in front of the weather!
First week on a new extension completed, let’s aim for the roof on in two weeks! We’ve had to do a raft foundation because of the loose soil and nearby trees, all done with no time delays 💪#extensions #building #jcb #diggers
Engineering Friday 💪 #loftconversion #engineering #building #crane #rooftops
Thanks to Jan for this wonderful testimonial! Check it on our website under projects! https://www.ag.construction/pocklington-bungalow #testimonial #bungalow #bungalowrenovation
Here is our fabulous team and vehicles, all ready to turn your project from a dream to a reality! BIG shoutout to Get Branded and Ceejays for the van sign writing and workwear #building #vans #extensions #houserenovations
This extension has flown up in a week, ready for first fixing! Time to start the loft conversion. #extensions #utility #flatroof #build #building #york
This weeks bedroom progress. #bedroom #panelling #steel #wetroom
A hard friday hand digging these footings, we have been tasked to build this extension so we can put scaffold up and build a huge loft conversion! More to follow! #extensions #footings #build #building #york #builder #mud
A typical day for the AG lads, all trades on hand 💪 #building #extensions #digger #homedesign #renovation #tiling #
Here’s another extension and house renovation we completed #homedesign #bathroom #builder #extensions #building #kitchen #woodfloors #tiling
Amazing testimonial from a project in York. Thank you! Check ag.construction for all the details and the full video about the work! #homedesign #testimonial
A good Monday at our Harrogate job, we had our electricians in first fixing downstairs, plumbers upstairs 2nd fixing the second bathroom, our tiler downstairs tiling the 3rd bathroom, joiners building walls, window fitters, and our team of brickies finishing steels and prepping for tomorrows concrete floor. We know your project matters, we are not your typical builders! Check us on the federation of master builders! #building #efficiency #extensions #porch #designandbuild
Another extension completed with under floor heating and lots of natural light #kitchendesign #underfloorheating #rooflight #herringbone #kitchenisland
We are doing an extension and a full house renovation in Harrogate, here is the first wetroom ticked off the list, wall hung toilet and vanity units create more space to the eye and easier to clean #wetrooms #bathroom #bathroomdesign #tiling
A well designed bathroom makes the difference, incorporating a bath and a wetroom in a narrow room #wetroom #brasstaps #freestandingbath #featurelights #niche
Just finished a full house renovation, with rear extension and landscaping #kitchenrenovation #building #landscaping #extensions #rendering #turf
Wetrooms are all in the prep work
A new conversion ready for our client to move into, here we altered two small bedrooms into one, and installed a new en suite
Check out the latest project testimonial on our website! #happycustomers #homedesign
Finishing touches are important. These gates finish the yard perfectly. #gates #builder
Plastering time at this extension! #plastering #homeextension #buildingahouse
Stunning veranda just in time for the sun to show! Thanks to @mkm_york for the timber and grp, @madefortrade4226 for the amazing lantern, and Gap for the cladding #veranda #garden #home
Throwback Thursday? This extension had a huge glass door we had to get a crane to lift over the house! Crazy! #crane #window #home #homerenovation
Under lit mantle is stunning. Great idea from our client. #mantlepiece #logburner
Lovely tile job on this bathroom. Going to look amazing once complete. #bathroom #tiles
Loving the traditional radiator in this build! #vintage #heating #radiator #homedesign
Lovely bathroom fitted by our team #bathroomrenovation
Steel going in for this kitchen extension #kitchenrenovation #builder
Some more pics of the renovation #builder #homerenovation
This job is looking amazing in the sun. A two storey side extension, a rear extension and loft conversion. #homeextension #loftconversion #builder
The light behind the mirror really adds something to this room. Great choices by the client. #mirror #bathroom #wetroom #homedesign
Classy wet room by the team this week. #bathroom #wetroom #extension
The end result of the big tiles. Top job by our resident tiler. #tiles #flooring
Pouring rain and clay is not the best start to a job but we get it done anyway! #builderlife #extension #builder
Bathroom is looking amazing now! #extension #bathroom
Huge tiles work really well in this space. Top work by the lads will result in a perfect floor! #tiles #flooring #extension
Throw back to this great project. Added a very versatile space to the customers home. #renovations #homeextension
Some amazing design work by the customer. An excellent vision really coming together! #bathroom #renovation
From this… …To this in a day! Team work! #teamwork #builder #extension
Check out our new video from a very tall project! #loftconversion #review
Check out the review video from a project we did in York! This was a very tall order ;) A loft conversion in a townhouse! https://www.ag.construction/york-loft-conversion #loftconversion #review
It’s not all big jobs! Here we are sorting a garage out! #builder
Scaffolding down on the big extension so we can crack on with the rear! #building #renovation #houseextension
It’s a tall build this one! #scaffolding #loftconversion
Plastering makes the rooms feel whole! This has been an amazing build and really changed the whole house! #plastering #builder
Some amazing flooring going in to the project #parquet #parquetfloor #renovation
Interior plasterboard going up! Exciting to see this take shape. #renovation #projecthome
Lofty work! #loftconversion #loftliving #builder
Dorma added in 2 weeks. This is one amazing renovation! #renovation #loftconversion
10 days from old terrible extension to flattened and a new quality extension being up! We don’t mess around and still deliver top quality. #extensions #builder #renovation
Not the worst view! New room ready to go! #loftconversion
Grp roof going on these. Super long lasting and hard wearing. #grproofing #roof
Roof off and loft conversion going up! #loftconversion #roof #home
This part of the extension is really taking shape! #extensions #homeinspo
Old extension removed and new, better one going up! Transforming this house! Exciting! #building #home #extensions #footings
Still loving belle barrows 🤣 #barrow #wheelbarrow #builder
Cracking view while putting some steel in! #dorma #steel #builder
Did your builder turn up today? With the right gear and right attitude you can get stuff done even in the snow! #builder #snow
Can't beat a belle barrow. Best in the business! @jewsonuk #wheelbarrow #bellebarrows #tools
Walls going up! Used to be a garage here and now it's going to be a stunning home! #dreamhome #build #bricklayer
Nice progress on this big extension! Great work by the team. More photos to come! #builder #homeextension #bricklayer
Excellent progress on the latest project! #building #extension #home
Thanks to @mkm_york for the supplies. Tip top service as always!
Starting a new project! Double side extension, single rear and a loft conversion to top it off (literally)! This is going to be great! #extension #homeextension #loftconversion #building #renovation
With the crazy storms going on it’s sometimes nice to reminisce of sunny times! This build had some big steels going in. Great time working with the structural engineer to do some amazing work and make a stunning build for the customer #extension #steelframe #buildings
It might be just a utility room but with a bit of planning it can add much functionality to a build! #kitchendesign #utilityroom #extensions #builder #homeimprovement #homeimprovements
New van time! Additional staff require more vans so thanks to the guys at @claphamcommercials for helping with the transit and tipper!
Love when a design comes together. It might be wet and wild out there but we are still completing projects! #kitchen #building #homeextension
This is an absolutely stunning extension. Really changed the flow of the home and made a space for the family. #home #extension #renovation #building
Big roof space!
Walls going in. Things start to look real! #building #renovation #homeextension #newkitchen
Bye bye old kitchen and conservatory. Time for something a bit special… #renovation #extensions #building #demolition
Cosy bedroom to snuggle up in now it’s turned cold! This was part of a renovation project in Pocklington. #bedroomdecor #bedroominspo #bedroom #bedroomdesign
This extension has really added some stunning space to the home. Excellent brick match makes it feel original. Very happy customer! #extension #home #building
Bungalow without the low! This build is really exciting and going to be a stunning home! #building #renovation #bungalow
Some nice work from our #brickie on this dentil course. This is a very nice build in strensall #extension #building #bricklayer
Check out a happy client video. An amazing extension in york. Huge amounts of glass and a stunning @scammell_york kitchen done over covid! https://www.ag.construction/Acomb-York-Extension
The rebuilt bungalow is nearing completion. Looking amazing. @mkm_york #bungalowrenovation #building
GRP roof for the extension. Water tight and reliable for many years to come, it’s a guarantee! Shout out to @mkm_york @mkm.buildingsupplies for keeping us stocked #grproofing #extensions
Carpets down and nearly done on the full rebuild of the bungalow. Looking really good. #newbuild #home #renovation
This project used to be a conservatory and is going to be a stunning extensions and kitchen. This is just over 2 weeks in despite the weather we have had! Big thanks to @futuredrainageyork for some help diagnosing collapsed drain in a neighbouring property. #extensions #building
Update on the kitchen build! #kitchen #buildingahouse #renovation
I love it when a build comes together. This is really shaping up to be a cracking space. #extensions #loftconversion #builder #renovation
Bathroom looking very smart! Nearly complete! #bathroom #shower #builder
Engineered Oak wood flooring makes for a great hardwearing but warm floor. We love it! #engineeredwood #kitchen #flooring #renovation
This one looks amazing in the sunshine. #extensions #building #gardenroom
Plastering always makes the job feel like it’s moving on! #building #renovation #extensions
Stairs looking amazing at this build! #stairs #building #loftconversion
Roof looking good! #extensions #building
Couldn’t round up the lads for a photo so took one of all the vans! Busy day at site today 💪 #building #renovation #trades
Lots of insulation to keep things energy efficient! #energyefficienthomes #loftconversion #building
Bringing the outside in! Lanterns and bi-fold doors make for an amazing space. #bifolddoors #rooflantern #renovation #extensions
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Nick

Nick F - Acomb, York

Really pleased with the extension and rework to the ground floor and garden. Its changed how we live in our house and given us a stunning place to socialise. The work was done to a very high standard with minimal mess.

Kieran

Kieran J - Selby

Alex and Graham did a great job on our loft conversion. The completed standard is very high, and the way the work was handled gave me confidence throughout.

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