Preliminary costs, of how much you spend before you build, can add up to a lot; here we look at how much exactly and how to prepare for it.
In this article we cover:
- Site related costs with estimates
- Professional fees costs with estimates
- Connection fees with estimates
- Cost of reports
- Top 5 tips to successfully budget for this phase
There are many non construction costs that you should allow for when budgeting your “all-in” costs
for your self-build project.
Note that the costs listed below are ballpark costs; actual costs will vary based on site specifics, location, demand, and other factors. Always ensure you obtain firm quotes before finalising your budget.
Reputable consultants typically provide quotes free of charge. All costs listed are based on a single unit and are excluding VAT.
Topographical Survey
This is crucial to ensure that your architect is working with accurate and up-to date information. It confirms existing site levels, boundaries, vegetation, manholes, hard landscaping, and highlights any potential ground contamination issues such as Japanese Knotweed. Ballpark cost: €800 – €1,500/£1,000.
Desktop Site Survey
This involves gathering all available data on your site, including historical records, maps, and previous land use, to help identify any potential issues early on. Ballpark cost: €500 – €1,000/£800.
Invasive Survey (Site Investigation)
Image from stock.adobe.com / nazarkru This is necessary to establish the ground conditions, locate existing services, and identify any surprises that might affect foundation design. This might include trial pits, boreholes, and soil sampling. Ballpark cost: €1,500 – €3,000/£2,000.
Percolation Drainage Test
A percolation test is required to assess the soil’s ability to absorb water, which is vital if you need to install a septic tank or wastewater treatment system. Ballpark cost: €500 – €1,200/£800.
Existing Building Survey
If you’re renovating or extending an existing structure, a detailed survey of the building is needed to assess its current condition and inform the design process. Ballpark cost: €600 – €800/£700.
Ecology Survey
Depending on the location, you may need an ecological survey to assess the impact of your build on local wildlife and vegetation. This could be particularly important in rural or protected areas or those within an existing building that could be used as a habitat for local wildlife. Ballpark cost: €800 – €2,500/£1,500.
Archaeology Survey
If your site is in an area of historical significance, an archaeology survey may be required to ensure no important artefacts or structures are disturbed. Ballpark cost: €1,000 – €3,000/£2,000 plus ongoing inspections should excavation works need to be monitored during the construction phase. Road Opening and Closure
Licences/Traffic Management
If your build requires access to public roads or if you need to install services that involve digging up roads, you’ll need the appropriate licences and traffic management plans. Ballpark cost: €2,000 – €5,000/£3,000 – varies greatly depending on the complexity.
Architectural Designer’s Fees
Architectural designers are key to translating your vision into a viable design. Their fees can vary widely based on the level of service provided, from initial design to full project management. Ballpark cost: 5 to 10 per cent of total build cost depending upon level of input, expertise and experience.
Structural Engineer’s Fees
A structural engineer will ensure your design is safe and meets all necessary building regulations. They may be involved in foundation design, steelwork, and load-bearing elements. Ballpark cost: €2,000 – €5,000/£3,000.
Civil Engineer’s Fees
Civil engineers may be required for designing infrastructure such as drainage systems, roads, and retaining walls and any temporary works. Ballpark cost: €3,000 – €5,000/£4,000.
Drainage Surveys
A detailed survey of existing and proposed drainage systems to ensure proper water management on your site and establish cover and invert levels for input into your Civil engineer’s drainage design. Ballpark cost: €1,000 €2,000/£1,000.
Quantity Surveyor
A quantity surveyor (QS) provides detailed cost estimates and helps manage the financial side of your project to keep it on budget. Allow 1 to 2 per cent of build cost.
Utility Connection Fees (network connections)
Connecting to utilities like water, electricity, and gas can be a significant cost, especially if the mains are far from your site. Irish Water fees were waived and at the time of writing, were due to be reinstated. Connections over 15 metres may require additional works, which can increase costs, including potential road openings. Costs are bespoke depending on the distance and complexity of the connection.
Top 5 tips for success
1. Complete Due Diligence: Conduct thorough site investigations and costings before finalising your budget. If possible, do this before purchasing the land or property.
2. Obtain Multiple Quotes: Always get at least three quotes from each trade to ensure you’re getting a competitive price in order to drive best value.
3. Consult Early: Engage with ESB Networks / NI Power and Irish Water / NI Water early in the process. Submit pre-connection enquiries to avoid surprises later on.
4. Prepare for the Unknowns: Unexpected costs can often derail a budget. Work with experienced consultants who have dealt with these issues before and can help identify and mitigate risks. Foundations are a common cause of going overbudget, for example.
5. Include a Contingency: Don’t forget to include a contingency in your budget for non-construction items. A minimum of 5 per cent is recommended.
