What to Check Before Renovating an Older Property in Alicante
Before you renovate an older property in Alicante, check six things in this order: the structure, signs of water and salt damp, the electrical and plumbing installations, the building’s legal and community situation, the permit route for your planned works, and the likely hidden costs. Do this before you commit to a design or a budget, because each check can change the scope of the project. The sections below explain what to look for, who should confirm it and how the findings feed into a realistic quote.
Key Takeaways
Start with the shell: cracks, deformation, façades, roofs, terraces and signs of water. Fixing the envelope comes before any cosmetic work.
Treat wiring and pipes in older homes as probably due for replacement until a qualified professional shows otherwise.
Ask about the building as well as your unit: inspection reports, community works, protected status and bylaws.
Cosmetic and minor works usually go through a simple town hall declaration, but structural, exterior or protected-building work needs a full licence.
Keep a contingency for what is behind the walls, and get the quote phased so surprises do not stall the whole project.
Table of Contents
Start with the structure and the building envelope
A renovation is only as good as the shell it sits in. A general home inspection of an older property in Alicante province looks at visible structure for cracks or deformation, then at façades, terraces and roofs where they can be reached. It then covers windows, doors and seals, and floors, walls and ceilings (Verify Home Inspector). You can do a first pass yourself on a viewing or site visit, but the conclusions belong to an architect, technical architect (arquitecto técnico) or a surveyor.
What to look for on that first walk-through:
Cracks. Fine hairline cracks in render are common. Stepped cracks following the mortar joints, cracks wider at one end, or cracks that reappear after being filled suggest movement and need a professional opinion before you plan anything else.
Floors and ceilings. Sloping floors, doors that no longer close and sagging ceilings point to deformation in beams or slabs.
Terraces and roofs. These take the most weather on the Costa Blanca. Look for hollow-sounding tiles, failed joints, ponding water and stains on the ceiling below.
Windows and doors. Old aluminium or timber frames without thermal breaks affect comfort and energy bills, but also tell you where water has been getting in.
Pro Tip: Photograph every crack with a coin or ruler beside it and note the date. If you are buying, that record lets your surveyor see whether anything has moved between the first viewing and completion.
Damp, salt and water penetration
Water is the most common reason an older-property budget grows. The same inspection checklist includes signs of water penetration, rising damp and condensation as core items (Verify Home Inspector). Near the coast, in places such as Torrevieja and Orihuela Costa, salt in the air and in the ground adds to the problem because it attacks render, paint, steel and electrical fittings.
The key point is to identify the source before choosing the treatment:
Symptom | Likely source | What to ask for |
Tide-mark or crumbling plaster at the base of walls | Rising damp or salt in the masonry | Moisture readings at several heights, not one spot |
Stains on ceilings under a terrace or roof | Failed waterproofing | Inspection of the membrane, drainage falls and upstands |
Mould in corners and behind wardrobes | Condensation and poor ventilation | Review of windows, extraction and thermal bridges |
Blistering paint on a façade wall | Water entering through render or joints | Façade survey before any repainting |
Damp patch with no visible cause | Leaking pipe | Leak detection before opening walls |
Repainting over any of these hides the symptom for one season. If you want the technical detail on moisture protection in coastal homes, our guide to demanding proper CTE moisture details explains what a specification should contain.
Pro Tip: Ask any contractor who quotes for damp to explain in writing where they think the water comes from. A quote that only says “treat damp” has not diagnosed anything.
Electrical installation: the check that cannot wait
Older electrical systems are among the hidden risks that matter most. A guide to hidden risks in Spanish property purchases flags panels without proper earthing or modern protection in buildings from before 1985, and notes that a qualified professional should confirm the real impact in each property (Verisum).
On site, look for these signs:
A small fuse-type panel, or one with few circuits for the size of the home.
Two-pin sockets with no earth connection.
Cloth-covered or brittle cables, or cables joined with tape inside junction boxes.
Sockets or switches that are warm, discoloured or crackling.
No sign of residual-current protection at the panel.
If you are planning a new kitchen, air conditioning or an induction hob, the existing supply is almost certainly not sized for it. It is cheaper to rewire while the walls are open than after tiling. Our electrical installations and repairs team assesses the existing installation and quotes the upgrade as a separate, visible line so you can see exactly what it adds.
Plumbing, drainage and water heating
Pipes are hidden by definition, so the check is partly about age and partly about what you can test. The same hidden-risks guide lists old lead or galvanised iron pipes among the problems found in older buildings (Verisum). A general inspection covers plumbing, drainage and heating or cooling systems insofar as they can be seen and tested without dismantling anything (Verify Home Inspector).
Practical tests on a visit:
Run every tap and flush every toilet at the same time and check pressure and drainage speed.
Look under sinks and around the water heater for corrosion, white limescale crusts and old repairs.
Check the colour of the water when a tap has not been used for a while: brown water suggests corroded steel pipework.
Look at the water meter with every tap closed. If it moves, something is leaking.
Find out where the main stopcock is, and whether it still turns.
If a leak is suspected but you cannot see it, non-destructive leak detection before opening walls usually saves money. Our plumbing and water leak detection service covers detection, repair, water heater replacement and tap and sanitaryware renewal, and runs an emergency line for burst pipes.
Materials that need specialist handling
Properties from earlier decades may contain asbestos-containing materials in roofs, downpipes or insulation, in buildings built before its prohibition in Spain (Verisum). Do not drill, cut or break suspected fibre-cement sheets yourself. If a roof, water tank or old downpipe looks like grey corrugated fibre cement, ask a qualified professional to identify it and to advise on the legal removal route before any demolition starts.
Check the building, not only your unit
If the property is a flat or an apartment in a community of owners, the building’s condition and politics matter as much as the interior.
Building inspection records
In the Valencian Community, owners of residential buildings with collective housing over 50 years old must obtain an IEEV.CV report. It assesses the conservation of common elements, safety, habitability and functionality, plus the energy performance of the residential part, and is valid for 10 years from the request to register it (Generalitat Valenciana inspection guide). Ask the community administrator whether the report exists, when it was done and what defects it recorded.
Community rules
Spain’s Horizontal Property Law sets limits on what you can change. Owners must maintain their unit so it does not harm the community, and changes may not impair the building’s safety, general structure or exterior, or the rights of others (BOE, Propiedad Horizontal). In practice this affects:
enclosing a terrace or changing windows and shutters on a façade;
moving load-bearing or party walls;
placing air-conditioning units on the exterior;
running new pipes or ducts through common areas.
The same law says that necessary maintenance works, including safety, habitability and accessibility works, are mandatory and need no prior owners’ meeting agreement, and that adjustments for disabled residents or those over 70 are subject to statutory conditions (BOE, Propiedad Horizontal). That matters if you are planning a walk-in shower or other accessibility changes, but check the conditions with the community administrator or a lawyer before you begin.
Pending community works
Before buying, ask the administrator about approved or planned façade, roof, lift or pipework projects. A special levy for them can arrive after you have already spent your own renovation budget. If you are buying from abroad, our guide to renovating a Spanish property from abroad explains when walls need approval, and our four checks before buying a property to renovate covers the purchase stage.
Permits: which route does your project take?
In Alicante city, minor renovations can be processed through a responsible declaration for minor works (Declaración Responsable de Obra Menor), which takes effect immediately on submission if the documentation is complete. Work involving scaffolding in a public space requires a minor works licence (Ayuntamiento de Alicante). The city’s declaration covers certain minor residential works such as maintenance, conditioning, some rehabilitation and limited interventions on protected buildings, while other works are excluded and need a licence (Ayuntamiento de Alicante).
The simple route does not stretch far. Responsible declarations cannot be used for new construction, volumetric expansions or interventions on protected or catalogued heritage properties, which follow the standard licensing procedure (Ayuntamiento de Alicante). A major-work licence is required for interventions on protected or catalogued buildings, and for works that alter the building’s architectural configuration, including essential changes to its structural system or exterior (Ayuntamiento de Alicante).
Put simply:
Type of work | Likely route |
Painting, flooring, replacing doors and sanitaryware | Usually minor works |
Kitchen or bathroom refit without structural change | Usually minor works, confirm with the town hall |
Moving or opening structural walls, altering the façade | Major-work licence |
Extension that adds built volume | Standard licence, not a declaration |
Any work on a protected or catalogued building | Major-work licence |
This is the rule set for Alicante city. Other municipalities in the province, including Torrevieja and Orihuela, run their own procedures and forms, so confirm the route with the relevant town hall or your technical architect. Our Torrevieja renovation stages and permits guide explains how this works locally.
Pro Tip: Ask the town hall whether the property is catalogued before you design the project. A protected façade or interior can rule out the layout you had in mind.
Where the budget usually moves
We do not publish fixed prices for renovation, because every older property is different and all our work is billed by contract according to its scope. What we can say is where the unknowns sit. The items that most often change a scope once the work starts are:
Electrics and plumbing, replaced in full rather than patched.
Waterproofing of terraces and roofs, and the surfaces under them.
Damp treatment and replastering after the source has been fixed.
Structural repair found after plaster is removed.
Undocumented earlier works, such as an enclosed terrace or a moved wall with no paperwork, which may need legalising.
The practical response is to separate known costs from provisional ones. Ask each contractor to price the visible work as a fixed figure, and the concealed items (hidden pipework, substrate repairs) as clearly marked provisional allowances, with a unit price for any extra. Compare at least three like-for-like quotes; our guide to planning a villa renovation on the Costa Blanca shows how to line them up, and our piece on choosing a renovation company in Torrevieja lists what to ask a firm before shortlisting it.
Common mistakes to avoid
Choosing finishes before diagnosis. Tiles and kitchens are the enjoyable part, but they are also the part that gets ripped out if a pipe or a wall turns out to be faulty.
Painting over damp. The stain returns, usually after the contractor has left.
Assuming the previous owner had permission. Check what is registered against what exists.
Skipping the community. Exterior changes without approval can be challenged later.
One lump-sum quote with no breakdown. You cannot compare it or control changes.
Wrong order of trades. Demolition, structure, waterproofing, then pipes and electrics, then plastering, flooring and kitchens, and painting last. Reversing this causes rework.
For older apartments in particular, our article on modernising an older apartment in Torrevieja shows how this sequence works in a typical project.
Our perspective: diagnose first, then design
We renovate older homes across Torrevieja and the Vega Baja, and the pattern is consistent: projects go smoothly when the survey comes before the design, and badly when it comes after. A tile choice made in week one can be undone by a damp problem found in week five.
So we start with a visit, check envelope, installations and building situation, and issue a free, detailed quote in phases. That way the owner sees what is certain, what is provisional and what can wait. Because we manage the plumbing, electrics, plastering, carpentry and painting ourselves, the order of trades is one plan rather than several people guessing at each other’s schedules. For owners who live abroad, we send photo and video updates so decisions can be made without being on site.
Our advice to any buyer is simple: do not fix a budget until a qualified professional has looked behind the obvious. The cost of a survey is small against the cost of a wrong assumption.
— URU Reformas
Turning the checklist into a plan
Once you have the findings, you need one team that can act on them in the right sequence. URU Reformas manages full and partial renovations, from facade and roof waterproofing to bathrooms and kitchens, with phased quotes and all trades coordinated under one contract. You can see completed projects on our Our Work page.
If you have a property in mind, or have just bought one, contact us for a free consultation and we will tell you what to check first.
FAQ
Do I need a survey before buying an older property in Alicante?
It is strongly advisable. A general inspection covers structure, envelope, damp signs and visible installations, but it will not open walls, so it shows risks rather than certainties. For anything structural, ask an architect or technical architect for a specific report.
Do I need a licence to renovate a flat in Alicante?
Not always. Minor works in Alicante city can go through a responsible declaration that takes effect on submission, but structural changes, façade alterations, extensions and work on catalogued buildings need a full licence (Ayuntamiento de Alicante). Other towns have their own procedures, so check locally.
Can the community of owners stop my renovation?
It can object to changes that affect the building’s safety, structure or exterior, or other owners’ rights. Works inside your unit that leave these untouched are generally your own business, but you must still keep the unit so that it does not harm the community (BOE). Ask the administrator before you start.
Is rewiring always necessary in an old property?
Not always, but it is likely in older buildings. Panels without proper earthing or modern protection are a particular concern in buildings from before 1985 (Verisum). A qualified electrician should test the installation and tell you what is needed.
Sources
Recommended
Comments