Contribution certificate (development, road improvement or sewer connection contributions)

Please note: There is currently an increased workload, which may result in delays in the processing of information requests. Processing takes place according to the date of receipt. We ask for your understanding.

On request, you will receive a certificate from the city stating whether development, road improvement or sewer connection fees are still payable for your property or have already been paid in the past.

Development charges, road improvement charges and sewer connection charges are public charges on building plots. Before buying/selling a plot of land or a condominium, it is therefore important to clarify whether contributions are still payable or have already been paid for the property in question. Ultimately, the amount of the purchase price also depends on this. As a rule, a contribution certificate is already required to finance the purchase price and must be submitted to the bank. In addition, it is possible for the contracting parties to include provisions regarding the contributions in the notarized purchase agreement if required.

Information on the contribution status of "your street" can be obtained from the Contributions Department. To do this, you can send an informal application by e-mail to  beitragsabteilungbonnde with an explanation of your legitimate interest, details of the district, parcel and parcel and details of the invoice addressee including the invoice address. Alternatively, you can also use the online service on the City of Bonn's service portal at the link below.
Please note: It is not possible to obtain information on the contribution status by telephone!

Development charges

The city of Bonn has municipal roads built for the first time at its own expense. These development measures give owners and leaseholders of adjacent properties the opportunity to build on their land or use it for commercial purposes.

At the beginning of a road construction project, the City of Bonn charges advance payments in the amount of the expected final development contribution. These are later offset against the final development charge.

The final development charge is only levied once the road has been constructed in all parts for the first time and dedicated for use by the general public and the entire road surface is owned by the city. Those liable to pay contributions will be informed of the forthcoming assertion of the advance payments or the final development contributions 6 to 8 weeks before the corresponding assessment notices are issued as part of the hearing in accordance with Section 91 of the Tax Code.

Road improvement contributions

The city charges road improvement contributions for the renewal, extension and improvement of roads, paths and squares (development facilities) whose planning was decided before 01.01.2018 or for whose execution budget funds were already provided before 01.01.2018.

For all road construction measures that were started after 01.01.2018 or for which budget funds were made available after 01.01.2018, the contributions are paid by the state of North Rhine-Westphalia.

The economic benefit arises solely from the possibility of using the renewed, widened or improved development facility. It is therefore not a measurable monetary benefit.

The term renewal refers to renewed construction. Renewal occurs when a road that is no longer functional, i.e. in need of renewal, is restored to a condition that is essentially comparable to the original system. A sub-case of renewal is also sewer rehabilitation using the liner method.

It is an extension if a road is given a greater overall width as a result of a construction measure (e.g. widening from the previous 10 meters to 12 meters overall width in future).

An improvement is deemed to exist if the condition of the road after widening differs favorably from its original condition in any respect (e.g. functional division of the overall area, first-time installation of a frost-proof substructure, etc.). The comparison of the original and the new condition is decisive.

Sewer connection fees

The construction of sewage systems is the responsibility of the municipalities.

Properties can only be used for building or commercial purposes if it is possible to discharge the wastewater from the property into the municipal wastewater system.

The owners or leaseholders (contributors) therefore receive economic benefits from the construction of the wastewater system.
For this reason, the state legislator has stipulated in the North Rhine-Westphalia Municipal Tax Act that those liable to pay contributions must participate in the construction costs of the wastewater system to compensate for these benefits.

The sewer contribution is levied as soon as the property can be connected to the wastewater system.
In the case of residential buildings, it amounts to the following per m² of land area for buildings with one full storey

• with one full storey: EUR 6.70
• with two full storeys: EUR 8.71
• with three full storeys: EUR 10.05
• four and five full storeys: EUR 10.72
• with six and more full storeys: EUR 11.39.

For commercial uses, the above amounts are increased by 50% in each case

Cost reimbursement contribution for nature conservation compensation

The contribution information also contains statements on possible cost reimbursement contributions. In the case of compensatory measures stipulated in a development plan, the initiator of the impact on nature and the landscape is first obliged to carry out these measures. If this is not possible in individual cases, the city should carry out the compensatory measure in place of the developer or the landowner at the latter's expense and provide the land for this purpose.

The resulting costs for the city for land acquisition, construction and the necessary development maintenance costs of the compensatory measure until the nature conservation objective is achieved are claimed in accordance with Section 135 a of the Building Code by means of a cost reimbursement notice. This reimbursement obligation arises upon completion of the maintenance of the compensatory measure by the city.

Further details are regulated by the statutes on the collection of cost reimbursement contributions.