Choose the role by the commercial outcome you need, the people it has to influence, and the point where your product is actually selected, accepted, priced, purchased or installed. A Specification Manager fits an early design-influence gap. A project BDM fits a conversion gap. An Account Manager fits an established base that needs holding and growing. A channel role fits range and pull-through in distribution. Titles are loose in this market, so define the work and the evidence before you name the role.
How does the buying process shape which sales role you need?
Building products get chosen at different points by different people. Some products are won in design documentation months before anyone prices the job. Some are won at a builder's approval process, some at a merchant's range review, some at the trade counter, and some on site when a substitution gets proposed. The role you need follows the point where your product is actually won.
The Building Products Decision Chain
I map every building-products sale against one framework. Call it the Building Products Decision Chain:
Need → Influence → Specify → Approve → Fund → Price → Purchase → Install → Operate → Replace
This is a simplified decision path, not a linear process. Stages overlap, repeat, or happen in a different order depending on the product, project and procurement model. Some routes use only a short part of it. A replacement or maintenance sale can start and finish inside two stages.
Use it to locate where a role makes its main contribution. A role creates value at one stage, influences another, has a natural entry point, and hands off to the next role or the next stage. No sales role controls a stage on its own.
The other thing the chain makes visible is that "stakeholder" covers several different jobs. On any one project you may be dealing with someone who influences the choice, someone who writes the specification, someone who technically accepts the product, someone who procures it, someone who actually purchases it, and someone who installs it. Those are rarely the same person, and a brief that says "sells to builders" tells you almost nothing about which of them the hire has to reach.
Which sales role should you hire for each commercial objective?
Start with the outcome you are buying. This table maps ten common commercial objectives to the best-fit role, the case for a different role, and the evidence worth testing.
| Commercial objective | Stakeholders and channel | Best-fit role | When a different role may be better | Evidence to test |
|---|---|---|---|---|
| Win product inclusion on commercial project documentation | Architects, engineers, designers, specification writers | Specification Manager | Sales Engineer, where calculations or technical acceptance drive selection | Named projects where their work led to inclusion, technical acceptance, tracking and defence through tender |
| Open and convert commercial and project opportunities | Head contractors, project builders, subcontractors, estimating and procurement | Commercial or Project BDM | Specification Manager, if the job is decided in design | One opportunity from first access through quote or tender to order, naming who influenced and who purchased |
| Grow sales through the residential builder channel | Volume and custom builders, estimating and procurement, frame-and-truss manufacturers or merchants | Residential builder-channel BDM | Account Manager, if the builder accounts exist and need holding | Accounts opened, product approval or range gained, first orders and repeat pull-through |
| Win civil and infrastructure work | Asset owners and project agencies, consulting engineers, head and specialist contractors, depending on delivery model | Civil and Infrastructure BDM | Sales Engineer, where technical acceptance is the real bottleneck | Long-cycle projects tracked across at least two delivery models, with the approach changed to suit each |
| Win direct public-sector procurement, panel or named-agency business | Agencies and departments buying direct, panel arrangements, prequalification | Public-sector BDM or KAM, where the manufacturer sells direct | Commercial, project or civil BDM, where a principal contractor or consultant is the real route | Panel or prequalification access plus awarded engagements, not panel listing on its own |
| Provide technical support that closes complex sales | Engineers, applicators, contractors, consultants | Sales Engineer for calculations, design and technical acceptance. Technical Sales Rep for application, demonstration and site problem-solving | Specification Manager, if the value sits in upstream documentation | One problem from diagnosis through compliant recommendation, acceptance and commercial result |
| Retain and grow an existing account base | Established builders, contractors, distributors | Account Manager for a defined portfolio | KAM or National Account Manager, where a few accounts are strategically complex or centrally negotiated | Retention against a baseline, profitable growth, renewal, stakeholder mapping |
| Build coverage across a territory | Trade contractors, installers, small builders, merchants | Sales Rep or Territory Manager | Merchant or Channel Manager, if growth runs through distribution | Territory baseline, new active accounts, retained revenue and margin against an agreed account universe |
| Secure range and drive pull-through in distribution | Buyers and category managers, plus branch managers and trade customers | Merchant, Distribution or Channel Manager | KAM, where it is really one or two centrally negotiated accounts | Range won, active branches, branch enablement and sell-through where the data is reliable |
| Grow one or a small number of strategic national accounts | National procurement and category management, plus local sites and branches | KAM or National Account Manager | Commercial BDM, if the relationship still has to be won | Contract renewal, profitable national growth, local activation across head office and site |
Who does each building products sales role work with?
The same ground read the other way. This maps each role family to the commercial outcome it is mainly hired to influence, the stakeholders and channels it works, where it typically becomes most active on the decision chain, and what to test. Three families sit here: new-business and project roles, specification and technical roles, and territory, account and channel roles. Sales leadership sits in its own table below, because it is bought on different criteria.
| Role family | Commercial outcome | Primary stakeholders and channels | Where it is typically most active | Evidence to test |
|---|---|---|---|---|
| Residential builder-channel BDM | New and grown sales through the builder channel | Volume and custom builders, estimating and procurement, display, frame and truss | Builder approval, estimating, price and repeat purchase. Hand-off depends on whether an Account Manager holds the account after activation | Accounts opened and converted by builder type and product category |
| Commercial or project BDM | Project opportunities won and converted | Head contractors, project builders, subcontractors, estimators, procurement | Often most active from tender and pricing through procurement, with earlier involvement where contractors influence design | A project from opportunity through to order, with each decision-maker named |
| Civil and infrastructure BDM | Long-cycle civil and infrastructure work won | Asset owners, project agencies, consulting engineers, head and specialist contractors | Varies by delivery model. May influence design, technical acceptance, tender, procurement and site adoption | How the approach changed across two different delivery models |
| Public-sector BDM or KAM | Direct agency, panel and prequalified work won | Agencies buying direct, panel and prequalification arrangements, principal contractors | May engage the asset owner or agency early, then works the applicable specification, approval, tender or panel route | Compliant tender and panel work converted into awarded orders |
| Specification Manager | Product preference and inclusion influenced and defended | Architects, engineers, designers, specification writers, relevant consultants | Influence and specify, then hands off to contractor-facing roles | Their specific contribution to inclusion, the technical evidence supplied, and how inclusion was tracked and defended |
| Technical Sales Rep or Sales Engineer | Complex sales closed on technical merit | Engineers, applicators, contractors, consultants | Across specify, approve and install | Applications solved and validated on real projects. Split the two: engineering acceptance points to Sales Engineer, field application points to Technical Sales Rep |
| Sales Rep or Territory Manager | Territory coverage across a defined mix of new and existing accounts | Trade contractors, installers, small builders, merchants | Price and purchase across many smaller decisions | Coverage, new active accounts, retained revenue and margin, matched to the actual new-versus-existing split |
| Account Manager | An established portfolio retained and grown | Established builders, contractors, distributors | Works an existing portfolio across repeat purchase, service, operation and replacement, and can still influence price and project orders | Retention, margin and share-of-wallet growth against a baseline |
| Merchant, Distribution or Channel Manager | Range secured and pull-through driven | Buyers, category managers, branch networks, trade customers | Influences range, price, purchase, branch activation and pull-through across the distribution route | Ranging, branch engagement, sell-through |
| KAM or National Account Manager | One or a small portfolio of strategic accounts grown | National procurement, category management, head office, local sites | Coordinates the account across central and local stakeholders | Contract renewal, profitable national growth, local execution |
Sales leadership roles
Leadership is bought differently. The useful questions are what the person leads, how much customer contact stays in the role, and what changes at the step up.
| Leadership role | Scope led | Customer involvement | What to test |
|---|---|---|---|
| State Sales Manager | A state team and its territory number | Commonly still carries key customers and projects in smaller or player-coach structures | Direct reports, account load, time split between leading and selling, and pricing or hiring authority |
| National Sales Manager | The national sales function and structure | Typically more national leadership and less routine account coverage, with the exact split set by team size | National operating rhythm, forecast ownership, hiring, coaching, structure, strategic-account involvement |
| Commercial Sales Manager | A commercial or project sales unit, where the role has a team | Involved in major project pursuits and pricing | Direct reports, pipeline governance, coaching and pricing authority. With no team, treat it as an individual-contributor role |
What else changes the answer?
Four things move the decision more than the job title does.
How much of the week is actually selling. Two reps I know sell the same product into the same market. One carries about $3 million, the other about $8 million. The $3 million rep spends most of the week on service issues, ETAs, order problems and site calls. The other has that work carried elsewhere and spends the week with builders and developers. Before you brief a hire to grow a number, work out how much of the role is sales and how much is service, quoting, chasing supply and internal administration.
Whether the base is new or inherited. A new market, an inherited pipeline, an installed account base and a mature channel need different people and different ramp measures. Say which one the hire is walking into.
Who they hand off to. If there is no internal technical support, estimator, customer service team or downstream BDM, the role absorbs that work and the sales time shrinks accordingly.
What "national" means here. It can mean central contract authority, multi-state travel, branch activation, or simply a customer with sites in several states. Those are different jobs.
In a long-cycle role, decide what early evidence you will accept before revenue arrives. Accepted technical submissions, a qualified project pipeline, a named decision group, specification status and tender progression all show progress well before an invoice does.
Does the hire need an existing customer network?
An existing network can shorten ramp-up. Commercial influence does not automatically transfer with it, because when a rep changes employer the product, the price, the supply model, the credit terms and the reputation of the business all change too. A relationship built on delivering one product well may not carry to another.
Test how the person creates and converts access. The evidence worth having is projects they personally opened, accounts they won, stakeholders they mapped across a decision, revenue or margin they generated, and a real example of building access in a new territory or product category from scratch. That evidence is a much stronger indicator that someone can rebuild relevant access in your market than the length of a contact list.
Do not ask a candidate to hand over confidential customer data or lists from a current or former employer.
What happens when you hire for the wrong route to market?
A common pattern in my desk experience starts with the wrong stage of the decision chain or the wrong route to market, and the hire is set up to miss from day one.
| Hiring mismatch | Why it fails | Typical commercial consequence | What to test instead |
|---|---|---|---|
| Hired a Specification Manager to hit a this-quarter revenue number in a new or immature specification territory | Specification influence is upstream and slow to convert | Missed target, and a good hire judged a failure | Whether the objective is preference-building or near-term revenue, and which leading indicators you will accept |
| Hired a transactional territory rep for a complex specified product | No specification or technical capability | Inclusion lost, substitution unchallenged, margin eroded | Technical judgement and evidence of defending a specification |
| Hired a project BDM to run the merchant channel | Project selling is not range and branch pull-through | Ranging stalls, branches never activate | Channel and category-management understanding, and branch-level engagement |
| Hired a residential builder-channel BDM for civil and infrastructure | Different cycle, stakeholders, delivery models and approvals | Long projects mishandled, pipeline empties | Sector cycle, delivery-model literacy and stakeholder mapping |
Some of what looks like a sales problem sits outside the salesperson's control. Supply reliability, credit, service load, installer capacity and technical response time all cap what a hire can deliver. One product I recruit for sells well and then stalls at install, because builders cannot get the contractors to fit it. No sales hire fixes that.
How should you brief a building products sales role?
Four questions do most of the work.
What is the commercial objective, in a number or an outcome rather than a title?
Which stakeholders must the hire reach, and which of them influence, specify, approve, procure, purchase or install?
Where is the product actually won, and through which route to market?
What is the split between new business and existing accounts, and how will each part be measured?
The Sales Hire Brief Builder walks through this and produces a written brief you can circulate internally before the role is advertised.
Go deeper on individual roles
Technical sales role taxonomy. Eleven titles decoded into four jobs.
Residential versus commercial BDM. The split that catches most first-time hirers out.
What a Specification Manager does. The role, its stakeholders and its measures.
Specification Manager versus BDM. Which seat is missing, and the hand-off between them.
Account Manager KPIs and bonus. How to structure and measure the account role.
State versus National Sales Manager. The two leadership steps and what changes between them.
Frequently asked questions
Which building products sales role should I hire first?
Hire against the constraint in your actual route to market. There are five common ones: early design influence, project conversion, territory coverage, channel range and pull-through, and existing-account growth. Name which of those is costing you work right now, and the role follows.
Do I need a rep with an existing customer network?
An existing network can shorten ramp-up, and contact volume on its own is not proof that commercial influence will transfer to a new product, price, supply model or employer. Test how the candidate created access, converted opportunities and rebuilt a relevant network. Do not ask for confidential customer lists or proprietary contact data.
What is the difference between a BDM and a Specification Manager?
A Specification Manager usually works earlier, with architects, engineers and specification writers, to get the product influenced into the documentation and defended through tender. A BDM usually develops and converts commercial opportunities with the relevant buyer, contractor or channel. The boundary varies by business, and some teams run a genuine hybrid. The Specification Manager versus BDM comparison covers which one you are missing.
What is the difference between a BDM and an Account Manager?
A BDM is primarily measured on new business. An Account Manager is primarily measured on retention and growth inside existing accounts. If the role combines both, define the split and set separate evidence and measures for each part.
Sources and methodology
These observations come from my own desk recruiting sales, specification, technical and leadership roles across Australian building products, lighting, interiors, civil, building envelope and construction chemicals. They describe where roles typically sit, not regulated definitions, and they are directional practitioner observations rather than a statistical survey. Job titles in this market are loose labels, so read the scope and the objective before you read the title. Current to July 2026.
Where a claim goes beyond my own desk, it rests on published guidance. The Australian Building Codes Board sets out how design specification, product sourcing and approval responsibilities differ. NATSPEC describes how worksections are customised by specification writers and how manufacturer content sits within them. The Department of Finance explains that panel appointment and an awarded order are separate things. The National Guidelines for Infrastructure Project Delivery cover the delivery models that change who holds authority on civil work.
If you are briefing a building products sales role, I can help you pin down the commercial objective, the stakeholders, the route to market and the evidence to test before the role goes to market. Get in touch. Happy to help, no obligation.
Cheers,
James