Window and Door Sales and Installation App Development

How window and door replacement actually runs

A replacement job moves through a long chain of people. A lead comes from a home show, a canvasser or a web form. A sales rep sits with the homeowner, walks the house, talks through frame materials and glass packages, and tries to close in one visit. A measure tech returns to take exact sizes. The order goes to a manufacturer, product arrives weeks later, an installer crew removes old units and sets new ones, and a service team handles any seal failures or adjustments afterward. Tepia starts a window and door project by following one job through that chain and noting every place information is written down twice.

Measurement is the mistake that hurts most. Each opening needs width and height at several points, a check for square, notes on interior and exterior trim, and the right installation type, such as an insert or a full frame replacement. One transposed number becomes a unit that does not fit and a remake that pushes the install back weeks. An app that forces complete measurements, compares them against the sizes the rep sold, and flags outliers saves more than any other feature.

Rules shape the visit too. Homes built before 1978 fall under the EPA Lead Renovation, Repair and Painting Rule, which requires a certified firm, lead safe work practices and a pamphlet given to the owner before work starts. Many jurisdictions require safety glazing near doors and wet areas and egress sizes in bedrooms. Tepia builds those checks into the configurator and the job record.

Job stages, app screens and what goes wrong without them

Tepia scopes the app stage by stage, because each stage has a different user and a different failure:

The presentation matters as much as the data. Tepia designs the sales flow for a tablet on a kitchen table, with clear product visuals, an energy section built on NFRC label values and ENERGY STAR climate zones, and a proposal the homeowner can read without a rep translating it. Our product configurator development page goes deeper on option rules.

CRM, manufacturer and financing integrations

Window and door companies usually run a CRM for leads and appointments, an accounting system and one or more manufacturer ordering portals. Tepia connects the app to those instead of asking your team to change everything at once:

• CRM platforms such as Salesforce or HubSpot, or home improvement CRMs your office already uses, for leads, appointments and results.
• Manufacturer ordering through EDI, a supplier API or a structured export that matches the factory’s order format, so nobody retypes sizes.
• Financing partners through their application links or APIs, so the rep can start an application at the table and see the decision in the app.
• Electronic signature for agreements, change orders and the lead pamphlet acknowledgment.
• QuickBooks for deposits, job billing and installer payroll.
• Twilio for appointment confirmations, rep on the way texts and install day reminders.

Sales tablets often lose signal inside homes, so Tepia builds the presentation, configurator and measurements to work offline first and sync when the rep is back in the truck. A sales manager dashboard then shows close rates, average units per job and remake causes by rep.

How Tepia approaches window and door sales apps

Tepia uses its six phase process here with a US based project manager who works with your sales manager, production manager and install lead.

1. Discovery: ride alongs on in home appointments and final measures, a day with an install crew, and a review of your product catalogs, option lists and manufacturer order formats. Deliverables are an Investigation Summary, an Interview Summary and User Stories such as a measure tech flagging an opening that is out of square by half an inch.
2. Design: a design questionnaire, moodboards, a style guide and wireframes for the presentation, configurator, measurement and crew screens, tested on a tablet in a real living room.
3. Development and Testing: an Alpha with two reps and a Beta across the sales team, with test plans for configuration rules, measurement variance, order exports and offline sync.
4. Training: hands on role play for reps, measurement practice for techs, and short sessions for installers, built on scenarios like a homeowner adding a patio door mid presentation.
5. Launch: migration of products, options and open jobs, a team by team switch from paper or the old tool, and support reps on the first sales week.
6. Support: bug tracking, quick fixes when a manufacturer changes its catalog, and feature requests such as adding siding or roofing lines.

Typically Discovery takes 1 to 3 months, development and QA 2 to 6 months, and launch about a month. Read more about our process.

Generic sales tools or an app built for openings

General home improvement sales apps handle appointments and presentations, and a small company selling one product line may do fine with one. Tepia will say so. A custom app makes sense when:

• You sell several manufacturers’ lines with option rules a generic tool cannot enforce.
• Remakes from measurement errors are a recurring problem.
• You want sales, measure and install to share one job record instead of three systems.
• You manufacture windows or doors and want a dealer app for your network of installers.
• You operate in several states and need lead safe and code rules handled by location.

Related work includes home services and home improvement apps and field estimating apps. Browse our work, including RELI Solutions, or talk to Tepia about your sales process.

Frequently asked questions