Stag Builders of Hertfordshire LLP Reviews 26

TrustScore 4.5 out of 5

4.6

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Rated 5 out of 5 stars

We had a great experience getting several jobs done with Ronnie and Adam from Stag Builders of Hertfordshire. Roof and lining replacement, gutters, soffits and fascias, and interior redesign of in... See more

Rated 2 out of 5 stars

Workmanship was OK but the management was awful - they were very unpleasant to deal with and we felt they were trying to find ways to charge extra at every turn. They outsourced their electrical and p... See more

Company replied

Rated 5 out of 5 stars

We decided to convert our double garage into a kitchen and extra living space so we could give 2 Ukrainian refugees a warm and attractive home within our home. From the first moment we met Ronnie an... See more

Company replied

Rated 5 out of 5 stars

Adam is a talented and considerate tradesman. He did some kitchen re-modelling for us. He was very clean and tidy, really hard working and innovative in providing solutions. He is very helpful and... See more

Company replied

Company details

  1. Construction Company
  2. Home Builder

Written by the company

Stag Builders of Hertfordshire LLP are trusted builders based in St Albans, Hertfordshire. Specialist in Garage Conversions, House Extensions, and Full House Renovations. As a member of the Federation of Master Builders (FMB). Our work is regularly inspected to ensure it meets the highest industry standards, providing clients with peace of mind and confidence in our craftsmanship. We’re also a registered TrustMark business—the only UK Government-endorsed quality scheme for tradespeople working in and around the home—demonstrating our commitment to quality, safety, and customer satisfaction. At Stag Builders of Hertfordshire LLP, our hallmark is visible in every project — thoughtful layouts, meticulous finishes and genuine passion for the craft. Whether we are converting a garage, extending a home or completing a full renovation, we approach every build with care, integrity and a commitment to excellence. Our clients trust us because we deliver consistent quality, clear communication and results that stand the test of time.


Contact info

4.6

Excellent

TrustScore 4.5 out of 5

26 reviews

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Rated 5 out of 5 stars

We had a great experience getting…

We had a great experience getting several jobs done with Ronnie and Adam from Stag Builders of Hertfordshire. Roof and lining replacement, gutters, soffits and fascias, and interior redesign of internal wardrobes.

Always professional, on time, responsive and courteous. Ronnie also brings his bags of experience to highlight considerations about how to approach improvements that will save time and money in the future which is that invaluable bit of wisdom you want.

I'd highly recommend using Stag for any home improvement.

July 17, 2025
Unprompted review
Rated 5 out of 5 stars

Great experience with STAGS

We found STAG Builders by chance and are so glad we did! As first time buyers with a complete "dooer-upper", they were incredible. They advised us on things we'd be able to do ourselves, to cut costs down, & also gave us their professional opinion on anything we asked along the way!

They kept us informed and gave us a timeline so we knew what and when things were happening and when we were expected to be finished. Adam and Ronnie's workmanship was great as well as their customer service with quick informative responses and we thank them for making our first house a home for both of us and our new baby! We'll be using them for any future projects we find ourselves undertaking!

July 6, 2024
Unprompted review
Rated 5 out of 5 stars

We found Ronnie and Adam to be really…

We found Ronnie and Adam to be really skilled builders for the renovation of our house.
Excellent workmanship completed in a reasonable time, even with some difficult weather. Would be happy to use them again for further projects.
We would definitely recommend STAG builders of hertfordshire

May 4, 2024
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thank you tracey for your 5 star review. It was a real pleasure recently working on your daughters extension, and now to hear the satisfaction we have accomplished with your refurb project. Many Thanks again, and glad that we met your expectations.

Rated 5 out of 5 stars

I recently had a rear extension done on…

*Edit - recommend to my parents who have recently had work done and once again Stag Builders have proven themselves to be 5* in their work**

I recently had a rear extension done on my property in Markyate by stag builders, they were very professional and punctual. I am extremely happy with all works carried out, Ronnie and Adam kept me informed throughout all the process of works carried out. 100% would recommend. 5* company.

January 31, 2024
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Stepanie, for leaving us such a lovely review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 2 out of 5 stars

Workmanship was OK but the management awful…

Workmanship was OK but the management was awful - they were very unpleasant to deal with and we felt they were trying to find ways to charge extra at every turn. They outsourced their electrical and plumbing works and it was not well coordinated. Overall, service and communication was poor. Can't quite understand how others had such different experiences albeit Adam did seem more reasonable and client focused than Ronnie.

March 5, 2024
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Hi, thank you for your feedback, although it seems that we have not quite met your expectations. We are glad to hear that you found our workmanship ok. Although you have mentioned management was awful, and unpleasant. We are sorry to hear this and after a thorough investigation into this matter, we have found nothing in email, messages, or voice calls to confirm this. Though due to any misinterpretation we apologise if you felt different.

We are also sorry to hear that you felt our company was trying to charge extra at every turn. After contacting our accounts department regarding this matter, i can explain why there may have been some misunderstanding. With all our work we supply a legal binding quotation with terms of contract. All our quotations are detailed and very clear of what work is covered. This is then agreed, and signed, by the client before any work commences.

Any additional work requested and is not written on a signed quotation, will incur additional cost. Any additional work outside of the original quotation will require a separate and agreed signed quotation, this is before any work can commence. This may be misunderstood and feel that we are trying to charge extra at every turn, but we ask all clients to go through quotations thoroughly before they agree and sign them.

We have protocols designed to maintain professionalism, and over our time trading we have experienced clients that like extras thrown in at no extra charge. Unfortunately, we are not that type of company and stick to a detailed agreed quotation that is signed. This can sometimes cause upset, but it’s imperative we keep to this procedure so it remains in line with our terms of contract.

With regards to our electricians and plumbers, they are outsourced, and this is common practise with most construction companies. Our electricians our NICEIC registered, and gas engineer’s corgi registered. We have worked closely with them for many years, and they are extremely coordinated with the work we allocated to them for our requirements. On this occasion we were made aware that they were given private work by the client which our company had no involvement. This can sometimes cause upset with punctuality and communication as we have no control of any privately made work agreements.

Regarding Adam seeming more reasonable, and client focused than Ronnie. We have forwarded this feedback to Ronnie, who apologises for any misunderstanding and upset caused.


Adam Kennealy
Company Director
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

House interior refurb

Stag conducted a really professional refurb of our old property which needed a lot of work doing! Works included a room extension, new bathroom install, new stair bannister and replastering of several walls; all of which were completed with a neat white paint finish. The team also fitted both levels of the house with new wood flooring. In hindsight we would have asked Stag to source the wood floor and electric works, as the other companies we contracted were a bit unreliable! We would definitely recommend Stag builders for anyone looking for similar renovations works.

June 30, 2023
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Joe, for leaving us such a lovely review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

Had a great experience from Stag from…

Had a great experience from Stag from the beginning for our garage conversion to office.
Demonstrated excellent building knowledge and all work.
Great communication, great finished product, respectful on the property.
Will be first port of call for any future work.
Thanks to Ronnie and adam @ stag

October 2, 2023
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Adam, for leaving us such a wonderful review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

Plastering: Clean sharp lines despite awkward room

Always a bit nervous using trades people for the first time but these guys put my mind at ease. They accommodated my requests to keep some awkward features and came back to fix snags very promptly. Would definitely use again :)

October 9, 2023
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Kezi, for leaving us such a wonderful review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

Garage Conversion

We used STAG builders for our garage conversion and couldn’t be happier with our new home office! Both Ronnie & Adam are exceptional at their work and know their trade inside out. They were professional, reliable, trustworthy and punctual builders that were a delight to work with. Ronnie & Adam communicated clearly with us throughout the conversion and even gave us notice when the electrics & plumbing work would be done so we could make alternate arrangements. One evening our boiler stopped working and Ronnie sent his plumber out to us at 9pm to sort it out as we had 3 young children at home- top service! Ronnie & Adam we can’t thank you enough for all your hard work and we hope we can work together again in the future. The best in the business!

March 22, 2023
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Anthony, for leaving us such a wonderful review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

Garage conversion

One of the best decisions of my life was employing Stag Builders of Hertfordshire to complete a conversion of my garage to an internal room in my home.

Adam and Ronnie were amazing from day one onwards. I did a lot of research when shortlisting to secure a build company but almost from the moment I met both Adam and Ronnie I felt safe, secure and very confident in their abilities.

Being my first experience I was probably over cautious and questioning.... however nothing was ever too much trouble. The professionalism, workmanship and communication between us was second to none.

Adam and Ronnie are skilled builders who work very hard. They thoroughly assessed the job on hand, carried it out to an exceptionally high standard always leaving my home in an immaculate state every day ready for the next.

The end result is amazing. I have a fantastic new room in my home that seamlessly opens on to my lounge creating one big functioning space. You would never know it was once a garage.

I can't recommend the company enough... they were punctual, incredibly organised, clean, tidy and the most polite respectful workmen I have had the pleasure of meeting.

Pure professionalism from beginning to end. Thank you both so very much. Jean .... Markyate

November 14, 2022
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Jean, for leaving us such a wonderful review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

Conversion of double garage to offer

We decided to convert our double garage into a kitchen and extra living space so we could give 2 Ukrainian refugees a warm and attractive home within our home. From the first moment we met Ronnie and Adam we knew that we were in the best of hands. They offered us many creative and practical ideas which would never have occurred to us, and carried out the project with great skill, efficiency and workmanship of the highest quality. They (and the rest of their team) were a delight to have around and the results are far beyond our initial expectations. Our Ukrainians are thrilled to bits and so are we. Thank you so much. Gay and Mike

January 13, 2023
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Mike & Gay , for leaving us such a wonderful review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

First class workmanship building our rear extension…

We are so happy with the rear extension Stag Builders have built for us. They supplied us with plans and structural drawings to carry out a very detailed extension that we have wanted for years but didn't know where to start. They also installed our new kitchen and utility room.

Ronnie and Adam are very skilled builders and the team of guys working for them are also very skilled. Like i mentioned at the start, we are really really happy and you won't go wrong choosing these guys.

Thanks so much Shani

October 20, 2022
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Shani, for leaving us such a wonderful review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

Excellent workmanship and service - best in class

Ronnie, Adam and Dan helped us with a knock through from our kitchen to living room (including putting in a structural beam) and certain other related works, including rewiring all the spotlights in both rooms, knocking through a door to our garage and installing a crittal partition. The workmanship is absolutely excellent on what was at times a tricky job, and the customer service was exceptional.

The team are tidy, polite and generally just lovely people to have working on a project in your home, who are all very skilled at what they do. They’ll be helping us with a garage conversion project once we have the necessary planning permission through, and seeing the quality of the work they completed this time round, we wouldn’t use anyone else.

August 19, 2022
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks David, for leaving us such a wonderful review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

Garage Conversion

Ronnie and Adam were quick to finish the garage conversion, kept the work tidy and finished on time. It was during the covid time when lead times for materials were relatively high and they were able to source the fresh doors in the colour we wanted and finished the works on time, on budget. Highly recommend them and would be calling them back for similar works!

August 12, 2022
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Thomas, for leaving us such a wonderful review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

10/10

We used Stag Builders for a single rear extension and was so pleased with them. Great communication and very tidy! 10/10!

July 14, 2022
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Matt, for leaving us such a wonderful review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

Garage conversion

STAG Builders recently converted our garage into a garden room, and we were very pleased with the quality of the finish. The team were professional, knowledgeable and very focused when on site. Adam in particular is hardworking, neat and tidy, and certainly an easy person to have working on your home. We would certainly use STAG again for any future projects.

February 15, 2022
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Mike, for leaving us such a wonderful review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

Rated 2 out of 5 stars

No after care of customers

UPDATE May 2022:

My initial feedback below was from Aug 2021.
This is an update as I feel aftercare experience is as important as the works. After the works were completed, Stag Builders of Hertfordshire promised they would come back for any snags (in particular one slab was loose on the new patio they laid and the grouting was not proper). However, 10 months on, not once did they call to check in. Now there are more slabs moving around, the grout is crumbling, the French drains they installed is blocked and became smelly - which I cannot unblock as they cemented the grills down and the Amtico flooring they laid down in the garage conversion is wavy. I gave them ample time (10 months is fair!) to proactively come and sort out the problems with the patio at the very least. Spoke to Ronnie on 4 separate occasions and was promised callbacks after he spoke with Adam. No response, clearly a technique to ware customers down and demonstrate that they are not interested in putting things right. It’s been upsetting, what a shame.
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Stag Builders of Hertfordshire built an outbuilding/cabin and laid new patio in our garden and converted our garage into a cinema room. Friendly and professional service from the get go. No fuss, no upset along the way. They’re not only great builders who know exactly what they’re doing and do it to a brilliant standard but they’re also very trustworthy, amazing people to have around your home. I wouldn’t look further!

August 23, 2021
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Hello Sev,

I’m Adam Kennealy, and I’m one of the company directors of Stag Builders of Hertfordshire. Thank you for taking the time to write. I wanted to let you know how sorry we are for what happened.

As many know, we pride ourselves on our excellent aftercare service. And in this instance, we clearly dropped the ball.

We’ll be contacting you personally in the next 24 hours to get in touch. We want to learn more about what happened and how we can make things right.

We offer our sincere appologies.

Adam Kennealy
Company Director
Stag Builders of Hertfordshire Limited

Rated 5 out of 5 stars

Stag builders of Hertfordshire are so easy to work with..

Ronnie and Adam really know their onions.. They have just finished our double storey rear extension, and renovation of downstairs. These guys are very easy to work with, and definitely trustworthy.

Thanks guys 😀

July 6, 2021
Unprompted review
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Reply from Stag Builders of Hertfordshire LLP

Thanks Rita, for leaving us such a wonderful review. Customer experience and satisfaction is our priority, and your review reaffirms the hard work we put in daily. We really appreciate your kind words.

Accounts Department
Stag Builders of Hertfordshire Limited

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