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    Construction

    How to Win Construction Tenders: Strategic Guide

    Everything a construction company needs to maximize success in public tenders: classification, evaluation criteria, winning technical memorandums and proven strategies.

    Ricardo Solano

    CEO & Founder of iaLicitaciones

    8 de enero de 2026
    20 min lectura

    The Public Works Market

    Public works tenders represent more than €25 billion annually in Spain. However, only 8% of construction companies concentrate 70% of awards.

    This guide provides you with the strategies that winning companies use to differentiate themselves in a highly competitive market.

    €25B

    Annual public works value

    8%

    Companies win 70%

    15-20%

    Optimal average discount

    60%

    Maximum price weight

    Business Classification

    Mandatory requirement for works over €500,000

    Business classification certifies the technical and economic solvency of your company to execute works of a certain type and amount. Without it, you won't be able to participate in most tenders.

    Group A
    Earthworks and drilling

    • Excavations
    • Grading
    • Quarries

    Group B
    Bridges, viaducts and large structures

    • Concrete bridges
    • Metal structures
    • Wooden

    Group C
    Buildings

    • Demolitions
    • Structures
    • Masonry

    Categories by Average Annual Value

    Cat. 1

    ≤ €150K

    Cat. 2

    ≤ €360K

    Cat. 3

    ≤ €840K

    Cat. 4

    ≤ €2.4M

    Cat. 5

    ≤ €5M

    Cat. 6

    > €5M

    Evaluation Criteria

    Economic Offer

    40-60%

    Bid price vs base budget. Beware of abnormally low bids

    Key Tips:

    • Calculate real costs with margin
    • Study historical bids from the organization
    • Avoid discounts over 15-20%

    Technical Proposal

    30-40%

    Technical memorandum, execution methodology and improvements

    Key Tips:

    • Detail phases and schedule
    • Include valuable improvements
    • Demonstrate project knowledge

    Execution Time

    5-15%

    Deadline reduction without compromising quality

    Key Tips:

    • Propose realistic timelines
    • Justify reductions with resources
    • Don't compromise safety

    Technical Team

    5-10%

    Qualifications of assigned key personnel

    Key Tips:

    • Updated and specific CVs
    • Experience in similar works
    • Required certifications

    Anatomy of a Winning Technical Memorandum

    Recommended Structure

    1. 1Project Analysis: Demonstrate deep understanding
    2. 2Execution Methodology: Detailed phased process
    3. 3Planning and Resources: Realistic schedule with milestones
    4. 4Quality Control: Specific procedures
    5. 5Valuable Improvements: Differentiated contributions

    Improvements That Make a Difference

    • Extended warranty beyond requirements
    • Justified higher quality materials
    • Deadline reduction with additional resources
    • Additional environmental measures
    • Enhanced safety plan
    • Extended post-construction maintenance

    8 Mistakes That Cost Awards

    1Underestimating the importance of business classification
    2Not visiting the site before bidding
    3Submitting abnormally low bids that can't be executed
    4Generic technical memorandum not adapted to the project
    5Incomplete or expired administrative documentation
    6Not studying the specifications with enough time
    7Ignoring valuable improvements in the specifications
    8Technical team without demonstrable experience

    iaLicitaciones for Construction Companies

    Our platform is specially designed to help construction companies find and win more public works tenders.

    Sector Filters

    Search by classification group and category

    Technical Memorandum Generation

    AI creates customized proposals

    Competition Analysis

    Know who bids and at what price

    Document Alerts

    Don't miss any deadline

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