Bought an Older Flat in Spain: Renovation First Steps

Collect the flat’s records and the building’s records

Ask for available plans, previous alteration documents, installation records, manuals and the energy certificate. Request the community minutes relevant to planned repairs, known leaks or shared-service work. Separate what is documented from what a seller or neighbour recalls. A newly painted surface is not evidence of the condition behind it.

In Madrid, the municipal ITE/IEE record service provides a route to building inspection information, with access restrictions for some details. Obtain the available report and follow-up evidence where relevant. A favourable building result is not a guarantee that every pipe or circuit in your individual flat has been tested. The energy certificate describes energy characteristics and recommendations; it is not a complete structural or condition survey.

Commission an inspection with a useful scope

Tell the technician what you intend to change and when you want to move in. Ask for accessible observations, their limitations, recommended tests and a prioritised written report. The job is to identify decisions and further investigations, not simply produce a list of every visible imperfection. Agree which areas cannot be inspected without permission or opening up.

Record cracking, uneven floors, staining, ventilation arrangements, service routes and the condition of windows and exposed fittings. Do not diagnose a structural problem or a moisture cause from one photograph. Where a significant issue is suspected, obtain the appropriate specialist assessment before attaching a cosmetic remedy to the budget.

Investigate before disturbing suspect material

INSST’s 2025 guidance explains why identification must suit the intended intrusive work. Older flats can contain suspect material in locations beyond a visible roof sheet, including service components or floor layers. Presence cannot be established or ruled out from an age estimate alone. Tell the contractor about available records and planned demolition.

Do not drill, break or collect a DIY sample to find out whether a material contains asbestos. Arrange a competent assessment and, where applicable, specialist handling before the affected work. A condition check that leaves concealed areas untouched may not be sufficient for the later demolition scope. Keep this as a separate investigation decision rather than allowing it to disappear into “all demolition included”.

Turn observations into decisions

From a finding to a funded action
Observation	Question to resolve	Before spending on
Staining by a bathroom wall	Source, affected construction and whether a shared pipe is involved	New paint or cabinetry
Old electrical board or unclear alterations	Condition, capacity and necessary records assessed by the installer	A new kitchen appliance layout
Slow drainage or a relocated WC	Route, condition, levels and common-stack interface	A fixed bathroom installation price
Hot rooms and poor windows	Orientation, shading, ventilation and whole-room comfort	An isolated glazing order
Building repair in community minutes	Decision, scope, responsibility and timing	A final household funding ceiling

For water and ventilation, have the professional assess the relevant CTE DB-HS provisions and existing system. Electrical renewal should be assessed against the applicable REBT requirements. Do not assume that an energy label, a recent product replacement or a working light proves that all connected installations are adequate for a new design.

Order work by dependency

Stop continuing damage and resolve safety-critical findings before decorating. Then coordinate shared-system decisions, the layout, service routes, preparation and final finishes. A concealed pipe repair after a new tiled wall is not just another line of plumbing: it can undo completed work. A measured layout and a checked service strategy reduce that avoidable sequence.

Records and initial professional inspection.
Targeted investigations and community questions.
Feasible layout, installation strategy and local procedure.
Comparable priced scope and an agreed change mechanism.
Construction with checks before concealment.
Commissioning, documents, defects and move-in arrangements.

Split essential works from choices

Give each proposed item a reason: prevent further damage, enable safe use, support an agreed layout or improve comfort. Mark optional finishes separately. Some “optional” work is cheaper to coordinate while a wall is already open, but that does not justify every upgrade. Ask the technician which decisions are linked and which can be deferred without undoing completed work.

Deferring all €12,000 of desired work and recalculating that chosen reserve to €2,400 gives €27,300 including the €900 investigation. The €13,200 reduction includes €1,200 less reserve; it does not prove the smaller reserve is adequate. Keeping the original reserve instead would require €28,500. Do not show money for unfinished work as a saving unless the deferral is intentional.

Coordinate the flat with the building

A shared stack, facade or structural issue may require community action rather than a private contractor’s unilateral repair. Under the LPH framework used for the Madrid example, identify the ownership and required communications or decisions. Ask who commissions the work and how costs will be determined; do not pre-allocate an uncertain community charge as if it were your accepted private contract.

Check the Madrid procedure against the proposed work and protected status, not the former owner’s renovation description. Changing a plan after purchase can change the procedural route. Resolve approvals and inspection access before scheduling the dependent interior finishes.

Define what must be ready for occupation

List usable water and sanitation, electrical completion, ventilation, safe access, contractor handover and the condition of unfinished areas with the relevant professionals. Work back from that definition to a realistic move-in plan. Include storage, overlapping housing and final cleaning where they are actual household costs.

Keep the inspection report, risk list, accepted scope and unresolved decisions together. Reno Pro can help organise stages, tasks, costs and recorded payments. It does not diagnose defects or certify the flat. The valuable first step is knowing what needs investigation and what it enables, so that the next euro pays for the right work in the right order.

Sources, date and scope

Sources checked on 19 October 2026. Local procedures and examples concern the city of Madrid unless stated otherwise. IVA explanations concern the territory where that tax applies, rather than the separate tax systems of the Canary Islands, Ceuta or Melilla. Original worked calculations are teaching examples for the stated scope, not market averages or contractor offers.