That €75,000 cottage could become a €400,000 renovation if you don’t know what you’re looking at.
Derelict homes have never been more popular in Ireland.
With the Vacant Property Refurbishment Grant, increasing property prices and the dream of restoring an old farmhouse or cottage, buyers are looking beyond turnkey homes and seeing potential where others see ruin.
But there’s one question every buyer should ask before making an offer:
Is it actually cheap?
The purchase price is often the smallest cheque you’ll write.
The real cost lies in everything you don’t see.
The €100,000 Mistake
Imagine viewing a traditional stone cottage advertised for €95,000.
The roof appears tired but repairable.
The walls look solid.
The garden is overgrown but manageable.
The estate agent describes it as “a fantastic renovation opportunity.”
Six months later…
- The roof structure has completely failed
- Foundations require underpinning.
- Septic tank replacement is mandatory.
- The electrical installation is beyond repair.
- Water supply needs replacing.
- The chimney is unsafe.
- Internal floors must be removed entirely.
Your renovation budget has doubled before you’ve chosen a kitchen.
This isn’t unusual.
It’s surprisingly common.
Cheap Purchase Price ≠ Cheap Project
Many buyers compare houses based purely on asking price.
Experienced project managers compare them based on total development cost.
Consider these two properties:
Property A
Purchase Price: €90,000
Renovation Cost: €280,000
Total Investment: €370,000
Property B
Purchase Price: €140,000
Renovation Cost: €150,000
Total Investment: €290,000
Which one was actually cheaper?
Property B.
This is why experienced renovators spend far more time investigating than negotiating.
Hidden Cost #1 – Structural Problems
Hairline cracks can be cosmetic.
Large stepped cracks can indicate foundation movement.
Timber beams that appear sound may have decades of hidden moisture damage.
Old cottages often conceal:
- Rotten wall plates
- Failed lintels
- Roof spread
- Bowing walls
- Historic settlement
- Insect damage
- Dry rot
- Wet rot
Until investigations begin, nobody truly knows.
Hidden Cost #2 – Moisture
Moisture is probably the biggest hidden expense in older buildings.
What appears to be simple damp staining could actually be:
- Missing drainage
- Blocked ventilation
- Cement render trapping moisture
- Rising damp misconceptions
- Failed roof coverings
- Condensation
- Groundwater ingress
Treating symptoms rather than causes can waste thousands of euro.
Hidden Cost #3 – Services
Many derelict homes haven’t had functioning services for years.
That means replacing virtually everything.
Including:
- Water mains
- Wastewater systems
- Electrical installation
- Distribution board
- Plumbing
- Heating
- Broadband
- Drainage
- Ventilation
None of these are glamorous.
All of them are expensive.
Hidden Cost #4 – Access
One of the most overlooked costs.
Can machinery actually reach the property?
Questions worth asking include:
- Can concrete trucks access the site?
- Is there room for scaffolding?
- Where will skips be placed?
- Can cranes reach the roof?
- Is there suitable parking for trades?
Restricted access can add tens of thousands to labour costs.
Hidden Cost #5 – Planning & Compliance
Many buyers assume renovation means simply fixing what’s already there.
Reality is often more complicated.
You may require:
- Planning Permission
- Fire safety upgrades
- Part L compliance
- Structural certification
- Wastewater assessments
- Conservation approvals
- Ecological surveys
- Boundary clarification
Each adds time and cost.
Hidden Cost #6 – Temporary Works
People budget for the finished house.
They forget the work required before renovation even begins.
Examples include:
- Temporary roofs
- Propping unstable walls
- Temporary power
- Temporary water
- Site fencing
- Welfare facilities
- Site security
These are essential costs that rarely appear on renovation television shows.
Hidden Cost #7 – Inflation
A project beginning today may finish two years from now.
Material prices change. (Only going up!)
Labour costs change – if labour costs themselves aren’t on the rise, availability of good quality contractors is limited leaving only “cheap & quick” options which are never worth the stress.
Regulations change.
A realistic contingency of 10–20% should always be included.
Without one, every surprise becomes a crisis.
Hidden Cost #8 – Wrong Building Methods
This is one of the biggest mistakes we encounter.
Older buildings behave differently to modern homes.
Installing impermeable materials where breathable construction is required can trap moisture inside walls, increasing the risk of mould, timber decay and poor indoor air quality.
Traditional buildings often perform best when repaired using breathable systems, including wood fibre insulation, lime plasters and vapour-open construction methods.
The goal isn’t just to meet modern standards—it’s to preserve the way the building was designed to work while improving comfort and energy efficiency.
Hidden Cost #9 – Poor Project Management
This may be the most expensive cost of all.
Many homeowners employ:
- One builder
- One architect
- One engineer
- One electrician
- One plumber
Everyone is good at their own job.
But who’s coordinating the project?
Without proper planning, projects suffer from:
- Delays
- Rework
- Budget overruns
- Material shortages
- Trades waiting for each other
- Incorrect sequencing
Unless you have experience managing previous construction projects, professional project management doesn’t simply save time.
It prevents expensive mistakes before they happen.
So…Should You Avoid Derelict Properties?
Absolutely not.
Some of the most rewarding homes in Ireland began life as derelict buildings.
The key is understanding what you’re buying.
A cheap property can become an exceptional investment – provided you uncover the risks before committing to the purchase.
Knowledge reduces uncertainty.
Planning controls cost.
Experience protects your budget.
How Summit Matters Helps
At Summit Matters, we don’t just renovate derelict homes – we help clients understand the full picture before work begins.
Our approach combines construction expertise with professional project management to identify risks early, build realistic budgets and develop a clear delivery strategy from day one.
Whether you’re considering your first derelict purchase or preparing to renovate a traditional Irish home, investing in expert advice before signing contracts could save you tens of thousands of euro.
Buying the property is only the beginning.
Buying the right property is where the real value lies.
