In this guide
To choose a hardware store (ferretería) in San Bernardino, plan around your project and the lake calendar: from December to mid-February the town fills up and orders take longer. Bring your list with measurements, ask about stock and delivery before you leave, and get big jobs done before summer. Here is how to choose and what is specific to San Ber.
Why buy before summer?
San Bernardino's high season runs from December to mid-February, when people come in from Asunción and nearby towns (Wikipedia (opens in a new tab)). In those weeks some products sell out quickly in local shops (Infonegocios, 2025 (opens in a new tab)). If you are painting a holiday house, replacing taps or fixing the roof before renting it out or hosting guests, buy materials in October or November. Since the pandemic many people from Asunción have moved to or built in San Bernardino and gated communities have grown (Infonegocios, 2025 (opens in a new tab)), so in season you compete with many houses doing work at once.
How to choose a hardware store in San Bernardino
- By trade: any neighbourhood ferretería covers screws, tools and paint. For roofing sheets, rebar, cement or pipes in quantity, look for one that sells building materials and has a truck.
- By delivery: home delivery is new in town; it started with shops' own motorbike couriers before the apps arrived (Infonegocios, 2025 (opens in a new tab)). Ask whether they deliver heavy materials to your door, especially in a gated community or away from the centre.
- By response: message your list with measurements. The store that answers clearly on stock, price and delivery day is usually the one that helps when something goes wrong.
- By payment: ask beforehand whether they take cards, QR or bank transfer, especially for large orders.
Plumbing: keep spares at home
According to the local ESSAP water utility office, most water cuts in San Bernardino come from broken pipes because much of the network is old, and dozens of new connection requests arrive every day (Última Hora, 2022 (opens in a new tab)). For a weekend house, keep PTFE tape, a couple of stop valves and flexible connectors in your size. If the cut is on the public network, the complaint goes to ESSAP, not your plumber.
Before building near the lake
If you are buying for a new build or an extension, check first whether you need a permit. All works fall under Ordinance 46/2001, San Bernardino's land-use plan, and the municipality reviews plans against it (ABC Color, 2025 (opens in a new tab)). Along the shore there is a protection strip for Lake Ypacaraí: in the recreational zone projects are assessed on environmental criteria and the reference is a 50-metre strip from the water (La Nación, 2021 (opens in a new tab)). In 2025 a lakefront build was suspended until it obtained an environmental impact declaration from MADES, the environment ministry (ABC Color, 2025 (opens in a new tab)). For a quincho, jetty or pool near the water, ask the municipality's works department before buying materials.
Quick list before you go
- Measurements saved on your phone and a photo of the part you are replacing.
- Ask whether sealed, unused items can be exchanged.
- Confirm Saturday and holiday hours that same morning.
- Keep a second store pinned in case the first lacks a size.
San Bernardino is about 50 km from Asunción (Wikipedia (opens in a new tab)), so a forgotten item can cost you half a day: write everything down.
FAQ
Are hardware stores in San Bernardino open out of season?
Yes. Since the pandemic San Bernardino has more year-round residents and local commerce has grown, with businesses open all year. Still, message to confirm the day's hours before going.
When is the best time to buy building materials in San Bernardino?
Before summer. High season runs from December to mid-February, when demand is higher and some products sell out.
Do I need a permit to build near Lake Ypacaraí?
Yes. Works fall under Ordinance 46/2001 and there is a protection strip along the shore; some projects also need an environmental impact declaration from MADES. Ask the municipality's works department.
Do San Bernardino hardware stores deliver?
Many do, but delivery is fairly new in town. Ask in advance whether they bring heavy materials to your house and on which day.
