Castleknock S And R Construction, Builder, Castleknock, Dublin 15

Sean Hanaphy Castleknock S&R Construction have provided a quality building service to homeowners and businesses in the Dublin and Leinster areas since 1986.

We are operated by experienced builders Sean Hanaphy and Robert Barker. Sean, a bricklayer by trade has more than 40 years experience in building, while Robert Barker brings with him an additional 12 years of experience.

S&R Extensions and Renovations are specialists in the building of extensions and renovations but also provide a complete building service. Our quotes are detailed and competitively priced.

Our Services

We specialise in:

  • Extensions
  • Renovations
  • All general building
  • groundworks
  • new builds
  • conversions
  • driveways
  • patios
  • walls

Tried and Tested

S&R Extensions and Renovations has been in business for 26 years, and have completed nearly 200 building projects, large and small. Our success over that many years speaks for itself.

First On The Job, Last Off

From the initial consultation to the finished walk through, your building job will be carefully project managed at all times. We stay in control of the details of each day's work so that your project will be correctly finished, on time and on budget.

Competitively Priced

Our quotes are keenly priced and we work hard to create a plan that will meet your requirements and your budget.

Fully Insured

We have full public liability and employers insurance. We are C2 registered.

Approved For Grant Funded Work

In addition to general building projects, we are approved to carry out grant funded work for disabled persons including downstairs bedrooms, invalid bathrooms, walk in showers and wheelchair ramps.

Meet Our Clients

We have many references available in most areas of Dublin. We can arrange for you to see our previous work and speak to our former clients.

Our Services

  • Attic Conversions
  • Building, Converting
  • Extensions
  • Groundworks
  • New Builds
  • Renovations
  • Roofing

Photos Of Our Work

Large Extension With Hipped Roof, Luttrellstown

sample of work

This extension has a three hipped roof instead of the more usual A roof. Each roof has a roof window See full gallery >>

Large Rear Kitchen Extension

sample of work

Our clients needed extra space for a growing family. We added a large kitchen and dining room extension See full gallery >>

Kitchen and Dining Room, Blanchardstown

sample of work

Knocking down the dividing open transformed the living space of this Dublin home. See full gallery >>

Two Storey Side Extension

sample of work

This project was both a renovation and an extension. The extension runs the length of the house and is See full gallery >>

Kitchen and Dining Room, Clonee, Co. Meath

sample of work

A large rear extension, as well as knocking down the old dividing wall transformed the living space of See full gallery >>

Extension for Montessori

sample of work

This is a purpose built montessori. It is attached to the side of a detached house, with its own separate See full gallery >>

Gorgeous New Living Area, Carpenterstown

sample of work

A great open plan style extension. The layout allows sunlight to enter from every direction. Removing See full gallery >>

Extension For Limited Space

sample of work

This is an extension we did for a client with restricted space who wanted to keep some garden area. See full gallery >>

Large Rear Extension, Clonsilla

sample of work

A large, full width rear extension. The size of this extension allows for a spacious new kitchen/dining See full gallery >>

New Build Blanchardstown

sample of work

Our client was taking on a large new self build and contracted S&R Construction to project manage and See full gallery >>

Attic Conversion, Castleknock, Dublin 15

sample of work

This attic conversion provided a roomy additional bedroom for our clients. Built in wardrobes ensure See full gallery >>

Open Plan Kitchen and Dining Area, Luttrellstown

sample of work

Knocking through walls to create an open plan kitchen and dining area is a really effective way to enhance See full gallery >>

Living Space Rear Extension, Clonsilla, Dublin 15

sample of work

A simple rear extension will create a valuable dining and relaxing area in this Dublin home. Even a small See full gallery >>


Find out about company insurance, project process aftercare by looking at our frequently asked questions page.

Our Map

Find projects we've done in your area. Check out our map >>

Our Customers Say

So Happy With Went With Them

Definitely, their professionalism, and their whole manner put me at ease from the very start.

Lorraine Murphy from Clonee, Co. Meath talks to pickapro .. See full interview

Extension, Renovation, Attic Conversion

The job was completed earlier than expected, on budget and the quality of the work is excellent.

Barry Sherlock from Luttrellstown, Dublin 15 talks to pickapro .. See full interview

Extension And Renovation

I would highly recommend Robert and I have done...Good word gets around!

Gerry Gentles from Carpenterstown, Dublin 15 talks to pickapro .. See full interview


The one word I would use would be reliable. Sean is very head down, no messing and gets the job done.

Susan Branagan from Preschool, Dublin talks to pickapro .. See full interview

Self Build Project Management

When Robbie came on board the project ran like clockwork.

Des Molloy from Blanchardstown, Dublin 15 talks to pickapro .. See full interview

100% Reliable

From start to finish I cannot speak highly enough of them.

Michelle and Derek from Clonsilla .. See full testimonial

Trustworthy and Reliable

The job finished in time without any fuss, leaving me very grateful that I had been so rigorous during my selection process.

Ken Anderson from Luttrellstown, Dublin 15 .. See full testimonial

No Hesitation In Recommending Them

They bring with them a good understanding of the standard and quality of workmanship required on a construction project which is vital for the successful completion of a job.

John Hayes from BScEng, CEng MIEI, Chartered Structural Engineer .. See full testimonial

Professionalism, work ethic

Most importantly of all we have found that the end user, our clients, have had nothing but good things to say about this construction firm

Rory Kissane from Architectural Design .. See full testimonial

Professional, Well Trained

We have found the people at Castleknock S & R Ltd professional, well trained and highly efficient.

Andrew and Karen Finnigan from Carpenterstown .. See full testimonial

Frequently Asked Questions

Find out about company insurance, project process aftercare by looking at our frequently asked questions page.

Find Projects By Area

Find projects we've done in your area. Check out our map >>

Contact Us

Get in touch with us by phone or email. Contact us now >>