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Cost to build a house extension in Ireland, single storey, 40 square metre, exempted development by Marr Construction in timberframe in 2016

2/1/2016

11 Comments

 
40 Square Metre House Extension:
Many people ask Marr Construction the question , what does it cost to build a house extension, usually single storey of 40 square metres, which is exempt of planning permission if it is to the rear of the building.

Marr Construction have  calculated that a house extension usually built using a  timber frame construction can cost in between €1900 to €2150 per square metre (of internal floor area) depending on the specification and materials used in the build.

For example in a house extension, the differences between using pine flooring verses oak or walnut  flooring are quite considerable. Using oak or walnut flooring can TRIPLE your costs!
Kitchens can vary in price from one kitchen supplier to another. Using Inhouse-Panelling centre verses IKea or Kube for example, this is all down to personal preference.
Roofing materials from concrete tiled roof to a Zinc metal roof vary greatly, with zinc being roughly 4 times more expensive.

On the lower end of the scale, to build a house extension or below 1000euro per square metre, there is a danger that the materials used would be sub- standard without the correct insulation and not to the required Irish specification of current building regulations. If this is the case, the Engineer or Architect if involved would not be able to sign off for bank loan requirements.

Marr Construction are interested to help customers with the ever increasing need to adopt better energy saving measures, reduce heating bills and increase home comfort levels, we need to improve insulation levels and ventilation levels at the same time in our homes.

Retrofitting or refurbishments to homes, needs to consider measures such as improved insulation levels to homes, airtightness of the building to eliminate leaks and draughts which allows heat loss and increase our fuel bills, improvement in better window and door design usually triple glazed systems, care should be taken to remove any cold thermal bridges in a wall or roof which are zones in a building where condensation, heat loss and mould growth will occur. Also (HRV)Heat recovery ventilation systems should be employed to allow for better air quality for the inhabitants. These will reduce problems such as asthma and allergies. Overall a better indoor climate which one notices when they walk from the existing house room to the new extension.

Other cost saving measures with grant aid available by SEAI in Ireland that Marr Construction are involved in are Solar for reducing your hot water heating and Solar PV Photovoltaics for self generated electricity and storing of that electricity in batteries for running lights in the evening. This along with the HEMS Home Energy Management System allows you to monitor your energy generation and usage on your computer.

By Philip Marr

Contact Us Today for more information on your House Extension!

rockwool flexislab in Marr construction project in timber frame walls
Rockwool flexislab in Marr Construction project in timber frame walls.
Icynene insulation in Marr construction insulation project
Icynene insulation in Marr Construction insulation project
inspirational homes  nordic design  scandinavian design house extension by Marr Construction cedar cladding dublin Ireland
house extension cedar cladding by Marr Construction in Dublin
11 Comments
power purchase agreement link
6/6/2013 12:41:38 am

I'm glad that the building be environmentally

Reply
peltor earmuffs link
6/27/2013 07:39:26 pm

One of the best noise protection for all workers who are on construction site

Reply
eff shield expanded metal link
10/27/2013 08:49:22 pm

Big savings during the construction we can do if we choose quality materials

Reply
damien hickey link
10/15/2014 06:27:05 am

can you please contact me re building an add on to our home of a bedroom and wet home. please and thank you

Reply
Helen Feely
2/21/2017 04:25:46 pm

I have 11ft by 11 space for extension and would like quote for kitchen come sunroom with wc, refiguring existing space, Tks Helen 0852840810

Reply
Marie Kelly
3/19/2017 01:37:07 pm

looking for two storey exstension 0879740632

Reply
Derek Dawson
6/23/2020 05:01:41 am

Hi looking to get a double extension built at the rear of my mid terrace house in Dublin 12 area

Reply
Bryson link
1/11/2021 01:23:19 am

Thanks for wriiting this

Reply
Andrea Foley
11/14/2021 02:53:15 pm

Hi I am looking to build a 2 story extension on to the side of an existing property.

Reply
KVN Construction link
12/12/2024 04:02:26 am

Great insights on the importance of choosing the right materials for house extensions, as well as the need for improved energy efficiency and comfort. As a Vancouver Siding Contractor, we at KVN Construction are also committed to helping homeowners enhance their properties with energy-efficient solutions. If you're planning an extension or home renovation in Vancouver, WA, it's essential to consider the siding options that will not only improve curb appeal but also boost insulation and energy savings.

Our Vancouver Siding services offer a range of materials, including energy-efficient options that help maintain optimal temperature control and reduce heating costs, much like the energy-saving measures mentioned in your post. Whether it's vinyl, fiber cement, or wood, our expert team can help you select the best siding solution tailored to your home’s needs. Proper siding installation can also address issues like drafts and moisture, ensuring your home stays comfortable year-round.

Feel free to reach out if you're looking for more advice on how Vancouver Siding solutions can complement your house extension or renovation project!

Reply
Rooftek link
2/3/2025 07:02:09 am

Great insights on the cost factors involved in home extensions! Just like in Ireland, homeowners in Millcreek, UT, looking to expand or renovate should also consider high-quality materials and proper insulation to ensure long-term durability and energy efficiency.

A crucial aspect of any home extension is the roof—choosing the right materials and working with an experienced roofing contractor in Millcreek, UT can make all the difference. At RoofTek, we specialize in durable, energy-efficient roofing solutions tailored to Utah’s climate. Whether you’re considering a new roof installation or need expert guidance on materials that enhance insulation and reduce energy costs, our skilled team is here to help.

If you're in need of a trusted roofer in Millcreek, UT, feel free to reach out—we’d love to assist in making your home addition secure and efficient for years to come!

Reply



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