Selling property in Buchs: older housing, roads being rebuilt

Anyone selling in Buchs (AG) will find no official price figure. The Canton of Aargau keeps no median prices by municipality; the Canton of Zurich does. Portal values for Buchs (AG) rest on offers, not on completed sales.

What is on record is the stock: Buchs (AG) has 1,451 buildings with residential use in the Aarau district. 973 of them are single-family houses, or 67.1%. The cantonal figure is 65.9%. Buchs (AG) ranks 10 of 12 in the Aarau district. In total, Buchs (AG) has 3,905 dwellings. 66.9% were built before 1981, against 51.8% in the canton. 18.3 hectares of 248.2 hectares of building zone are undeveloped, or 7.4% (as of 2022). For the share of undeveloped zone, Buchs (AG) ranks 76 of 196 in the canton.

What your house in Buchs (AG) is worth follows from comparable sales, the plot and its condition. The free assessment provides a written range with its explanation.

The thoroughfare, Aarauerstrasse and Mitteldorfstrasse, cantonal road K210, is being renovated over 920 metres.¹² Of this, 350 metres are on Aarauerstrasse and 570 metres on Mitteldorfstrasse.¹² Plans include low-noise surfacing, pedestrian refuge islands and renewed utility lines.¹² The credit for the municipal share was approved in November 2024.¹² The canton followed in February 2025.¹² Total costs come to CHF 13.365 million.¹² The public display of plans and approval are scheduled for 2026.¹² Construction could start in early 2028.¹²

In addition, the canton has been renewing the Aarau–Buchs–Suhr link since August 2022.¹³ The project comprises four sections with low-noise surfacing and safe routes for pedestrians and cyclists.¹³ The schedule gives May 2025 as the completion date for the Bavaria roundabout.¹³ Work on Tramstrasse, along the Buchs municipal boundary, has been under way since May 2025.¹³ Completion there, without the final surface layer, is planned for December 2026.¹³ Total costs come to CHF 34.09 million.¹³ The municipality of Buchs bears CHF 3.22 million of this.¹³

In Buchs (AG), 971 of 1,451 buildings with residential use date from before 1981. That is 66.9%. Among the 196 municipalities in the canton, that is rank 9, counting from the highest share. In the Aarau district: rank 2 of 12. Buchs (AG) therefore has a higher share than the canton at 51.8%.

In Buchs (AG), oil or gas heats 1,019 buildings with residential use, 70.2%, against 51.8% in the canton. Among the 196 municipalities in the canton, that is rank 8, counting from the highest share. For many owners in Buchs (AG), the heating is therefore a topic.

For a sale in Buchs (AG), records of heating, roof and windows show what has been renewed; they belong in the sale documents. On 1 January 2029, the imputed rental value and maintenance deduction end in Buchs (AG), as everywhere, for owner-occupied homes.¹ Whether a renovation pays off first is explained in Renovate or sell.

Buchs (AG) has 8,651 residents. 1,474 of them, 17.0%, are 65 or older, against 19.5% in the canton. Among the 196 municipalities in the canton, that is rank 162, counting from the highest share. In the Aarau district: rank 12 of 12.

On 1 June 2026, 30 homes in Buchs (AG) were empty, 0.77% of the stock, against 1.05% in the canton. Among the 196 municipalities in the canton, that is rank 91, counting from the lowest vacancy. The rate for Buchs (AG) covers rented and owner-occupied homes, not the supply of houses.

The municipal tax rate of Buchs (AG) is 118%. Among the 196 municipalities in the canton, that is rank 158, counting from the lowest tax rate. How Buchs (AG) compares for the same income and wealth is shown in the municipality atlas. By public transport, Zurich HB is 37 minutes away from the Buchs AG stop, with 1 change.

In Aargau, property gains tax falls with every full year of ownership. The rate drops from 40 per cent in year one to 5 per cent after 25 full years.² After more than ten full years, a house gets at least a flat-rate cost deduction: 80 down to 65 per cent of the sale price.³

If you sell your permanent and exclusive home, you can apply to defer the tax.² You must buy or build a new Swiss home within 2 years before or 3 years after the sale.² Only the reinvested proceeds are deferred.² Deferred does not mean waived: the next taxable sale also taxes this gain.²

Aargau has no classic transfer tax. Instead, the canton charges a land register levy (Grundbuchabgabe) on every sale: 4 per mille of the price.⁴ Buyer and seller are jointly liable; the law does not say who bears it.⁴

Only an Aargau notary (Urkundsperson) may notarise the sale contract.⁵