1. Start with the diagnosis, not the demolition

A villa may seem suitable for direct renovation and hide undocumented extensions, humidity, exhausted facilities, cracks, drainage problems or differences between Cadastre, Registry and physical reality. Before designing, it is advisable to survey the property and review its urban situation with a competent technician.

The inspection must be adapted to the project. A comprehensive intervention usually includes structure and envelope, covers, waterproofing, sanitation, electricity, plumbing, air conditioning, swimming pool and land containment. The tastings and tests are decided according to the evidence found; A visual visit rarely allows for accurate budgeting.

  • Dimensional and photographic survey.
  • Urban planning and documentary verification.
  • State of structure, facades, roofs and terraces.
  • Capacity and layout of facilities.
  • Humidity, drainage, pool and outdoors.

2. Turn expectations into a clear program

The briefing should explain how the house will be lived in: annual or holiday occupancy, users, remote work, guests, staff, privacy, storage, accessibility, maintenance and automation. A collection of images does not replace these decisions.

The scope is then ordered into three levels: essential, desirable and optional. This hierarchy protects what is important if an unforeseen event appears and avoids cutting technical elements late that condition the entire work.

  • Distribution and interior-exterior relationship.
  • Kitchen, bathrooms, closets and auxiliaries.
  • Thermal, acoustic comfort, lighting and security.
  • Swimming pool, terraces, landscaping and outdoor kitchen.
  • Efficiency and ease of maintenance.

3. Preliminary project, feasibility and objective cost

The preliminary project tests whether the program fits physically, normatively and economically. Alternatives are compared, structural interventions are identified and a first strategy for facilities, envelope and exteriors is defined.

The initial budget must be estimated by chapters and separate work, technical fees, rates, equipment, furniture, landscaping and a contingency proportionate to uncertainty. Hiding items to present an attractive figure does not reduce the real cost.

  • Decide early on geometries, openings, kitchen, bathrooms and air conditioning.
  • Detect products with long delivery times.
  • Coordinate architecture, structure and facilities.
  • Update cost and schedule with each relevant decision.

4. Licenses and documentation: each action requires its fit

Not all works follow the same procedure. Depending on the scope and municipality, an urban planning license, responsible declaration or other authorizations may apply. Structure, extensions, exterior changes, swimming pool or protected conditions may require different controls.

The correct route must be confirmed by the technician with the City Council before contracting closed dates. Submitting a file does not automatically make any action viable: the project must comply with the applicable regulations.

  • Define the scope before choosing the procedure.
  • Check community, easements and sectoral conditions.
  • Coordinate project, safety and waste when applicable.
  • Keep supporting documents, resolutions and final documentation.

5. Hire by comparing the same

A useful offer breaks down units, quantities, price, quality, exclusions, taxes and term. If each company receives different plans, the comparison will be misleading and the gaps will reappear as extras.

The contract must define scope, payment milestones, schedule, changes, insurance, responsibilities, guarantees and receipt. Payments are tied to verifiable work; Modifications are evaluated and approved in writing before being executed.

  • Measurements and memory of common qualities.
  • Explicit inclusions and exclusions.
  • Decision and supply calendar.
  • Certification procedure, changes and deadline extensions.

6. Control the work with information

Weekly coordination reviews safety, progress against the program, decisions, samples, incidents and upcoming work. Dated photographs, minutes and a change log keep the owner, technicians and builder on the same information.

The quality is checked before hiding works: waterproofing, slopes, pipe pressure, wiring, insulation and installation steps. Waiting until the end multiplies the cost of correcting.

  • Minutes with person responsible and date.
  • Approved samples and prototypes.
  • Documented evidence.
  • Verified certifications with real progress.

7. Reform from abroad without losing control

An owner who does not reside in Spain needs a clear matrix of decisions, no more scattered messages. It must be agreed who can approve, what is required of the client, how often it is reported and in what format.

The periodic report brings together photographic progress by areas, program, economic situation, changes, risks and upcoming decisions. Remote visits work best with marked plans and specific questions.

  • Main interlocutor and approval matrix.
  • Shared cost, schedule and decision dashboard.
  • Physical samples for color and texture.
  • Early warnings about risks.

8. Start-up, reception and useful life

Delivery is not just a review list. HVAC, ventilation, hot water, lighting, security, automation, irrigation, drainage and pool must be tested in real use.

The owner must receive final plans, manuals, warranties, tokens, certificates, contacts, and systems training. A subsequent review allows equipment to be adjusted and defects that appear with use to be resolved.

  • Incidents with photo, person responsible and date.
  • Testing and balancing of systems.
  • Final accessible file.
  • Preventive maintenance plan.